thumb|right|Song of Riquier in a 13th-century chansonnier. Guiraut Riquier de Narbona ( 1230 in Narbonne – 1292 in Narbonne or Rodez) is among the last of the Occitan troubadours.Joseph Anglade, Gramm
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0112cf96d3145154cf28407c419f38a5b85b6d6249b6508e8156fd216287a57b. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2788fa4-feee-422a-acbf-6f44f9f13b47.json and https://artists.proofprofile.net/proofs/artist/e2788fa4-feee-422a-acbf-6f44f9f13b47.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Reis glorios: Ouverture (arr. S. Bergeron)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecde1f5d59aa65eb75699eae5ed54c4d641b924273bfff0c9b5f79311786be79. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKC60714336.
Beata viscera (arr. S. Bergeron): Beata Viscera (arr. S. Bergeron)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe336722ef3ed4b24f23d823137906a20eb3f63b31d5f9f762799b31f88176cfa. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKC60714337.
La tierche estampie real (arr. S. Bergeron)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf501a7d5a7e4918b8293df4f59f7ea28a4f7a2dd5aad42f5bcd6e173cd640fd9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKC60714338.
Lonc tems ai - Lo ferm vole (arr. S. Bergeron)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3cf571a61c7d5184db3345b4c85ff2b47c3d38651d8205b29dd8515751b91da. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKC60714340.
Cantiga No. 1, "Des oge mais quer' eu trobar" (arr. S. Bergeron)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8a1a0efe48a17be2e6b0ee0bf5037470497963ace107eace7b0bf65b321c2b. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKC60714342.
La Quarte Estampie Royal (arr. S. Bergeron)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b10182e3b0f8ddc6284dbc412502a4804ddd41ea21e5fd10e183f8e3ffce929. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKC60714343.
La Septime Estampie Real (arr. S. Bergeron)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ac9c380c1ebb6267cddb3857308fcaddab7d25b864c9501fa23a7daba9d88b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKC60714345.
La Seconde Estampie Royal (arr. S. Bergeon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fca4c712d7dec0b8de776d538133f57f72f6cac03211f7dc62344f5c65db638. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKC60714346.
C'est la Fins - La Quinte Estampie Real (arr. S. Bergeron)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320aa28d1307ff6ee5795260db8670fca8e9560a1ecce3256eb3cd661754f93b. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKC60714347.
Falsedatz et desmezura (arr. S. Bergeron)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8563068849162de40e303dad91719ee26d9fa0316e32816045a73534d0dcc139. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKC60714348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6575165b4bac1d2d45eaa5c36dfaedc2e89a691ac9f46fa7f0f80ea0ed678611. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USKC60714353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a992c7608a5486112f1af917498ac3676076d0b0734cc0b280bf586ab262729. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB338836801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc2dadaeb31f3c3453a682c5fc9bfb00d8ed083e8f8dc30d7a02a9647b2cf59. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB338836802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531ddc9b83fecb8ef9cf541905304a79f569fdd99cafdf94e21d58a29e59c2b1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB338836804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f72a225c87ded255905caf85a3cfdf14907097a72bd9135db475dccd6e54ca2. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB338836806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c220cccd531f2e4e8785ab8ae92e6f8e8dcd541dac9158fe398a28065624ce1. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331703857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5fb8234ae50fa37b3383ff45e17fffb0284f7d4e394eac3c7d1cfa628e991a. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331703858.
Como somos per conssello do demo perdudos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81afaaf9e5d048bd8393c7ae86dd9f26c155bf86f7f4aeddfafa2e8917222c72. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331703870.
My Vielle and the Rest (12th and 13th Century Medieval Music)
Si ai perdut mon saber, Ponç d'Ortafà (I Neither Live Nor Die)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa7351e3cab2e12555321e0c00827c3b753a5f2c5a37b31887cc594bc06d72b. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2216436.
Caritas abundat in omnia, Hildegard von Bingen (From The Lowest Depths To The Highest Stars)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ae7b2b3d012d639c69d3a8cbbd2d29a4ffeed56125d096afe41a72bf60824d. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2216437.
Aissi quon es sobronada (The Chosen Flower)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51347884e86a29cdfe3a5132e0a6b2236df6289b2b457d873a12f78df9cfd489. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2216438.
Lo iens cors onratz, Gaucélm Faiditz (Of Great Beauties)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f736e6c99241f45a249b126da1edfa55a5972aa21e62011be2b2b6d59e71f0. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2216439.
Amours qui biens ses enchanter (And You Will Enchant The Enchanter)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85ef72aad0a5f3ba8216dee73ac8f16ab9d4484205caf23c39a64d4a93cbccb. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2216440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd5e4fcb7545a7caf2aadd00ca5b581eff3e856b372b7eeb6341eade6481bbe. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2216441.
A chantar mes al cor que no deurie (For There Is Reason To My Pain)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e27c268ea364bc19d7c0762d804b7af9ccbdd6eaf951d3960e765c0c15b93c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2216442.
Dregz de natura comanda (But Roots Is What One Keeps)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc42b37327f0baadc0be5eb45be7c8f3060c2ec8ee3b31a8e89f114ccbfbdd55. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2216443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe103cd22aa95095750999536be92a2dc023310c5f9662b8bcab324f6f6d5d734. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2216444.
Mout m’abelist quant je voi revenir (When Winter Returns)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf565f0573260a220cdeece5f20639a3a151281be44aa3250963da13108eb657d. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2216445.
Volez vous que je vous chant (In The Shade Of An Olive Tree)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d616d552aaa2b4922d123685b5da03be60ba489bbbf9a9404a2b68a60792a75. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2216446.
Un sirventes novel vueill comenzar (I Have in You My Good Hope)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51223997c03e315ba923668b0035a94418508118fb8f207801ed4cc579f483d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2216447.
Efforcier m’estuet ma voiz (Hoist The Gall From Me)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dccb9d81ab0b7cb3cfed91431d5a37722894e88b48b05cc6916b620680f50b9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2216448.
Edi beo thu hevene quene (Blossom Sprung From A Single Root)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67cdb257a2e41d66ddf194193bbd60374b322f02493e54e7f1ffd53d5e618da. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2216449.
De la gensor qu’om vej’ al meu semblan (I'll Go Far Away If My Heart Wants To Follow)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142351df90a2770c764410b33606df1f583246fd4c0734348e98aa1f4da6edc2. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2216450.
Bonus Track: Propiñan de melyor (Cancionero de la Colombina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68df5f3867223d87111aaea1f8296378495654d6c9ee8fb26fc542c056334a66. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWX2216451.
Hildegard Of Bingen: Ave Generosa / Oswald Von Wolkenstein: Ave Mater, O Maria / Riquier, G.: Humils, Forfaitz, Repres E Penedens
Purple Classics Presents: Unicorns & Castles – Medieval & Renaissance Music
GBL Add. MS 29987: No. 91, Lamento di Tristano - La rotta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541116469248753030e730d929a99b0926741c6d405538839c3487eec368939f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1611246.
Tan m'abelis jois et amors e chans: Tant m'abelis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74654d5b81d8a8cd343bef35b937ea27afe21f0e393466657968bd350a4f167a. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199703301.
Domna, pos vos ay chausida (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09ce0419ef5da23688ebcba7159d152dce84e67d2891a3d1e3a97670307b045. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199703302.
Non puesc sofrir (Bornelh) - Contrafactum: Ar me puesc (Cardenal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ec9b2ffc79b84314012fb7dfcd0ce86c41c30eed5c7ae4e384ce52f4fdb1b7. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199703303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f598a8b6891dec6b51ec40f68f1e70d2cacc7efcb1921df810eaf0715e7001. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199703304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdc5213c83327e6bcf19210b8b15675890bddfad2ecda52e148c1f5c836d598. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199703305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ca745b860a5ea33b69e8e459ddfda292186eec79240e1b419348e2e95d0991. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199703306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864065c98c14a236d70689c37ad9c734975b7653808de2fe20a575dc2dbc10e0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199703307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d870f7648da3c1f071c9e0914854ed28d33e5a59e213f65d32e344cd58598b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199703308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf386825ef1534d9f5db2430e59cc9fd59d3757cee0232cb3b0f90ba536745eba. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199703309.
Humils, forfaitz, repres e penedens: Humils forfaitz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1b4da5a3736f1c15ed9845db8eaa0b6dcb032609e4f944c951b7aa110429f1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199703310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa538c57bea360abed1437b265926ec9c6f8223262449080446d41d68d73e9322. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199703311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45c517b46309cfaec60b623bd21ce020f070f14ee89905bbdd74cb85ec272bb. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199703312.
Early Music Recordings of Ensemble Unicorn, Vol. 1
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Missa Papae Marcelli, "Pope Marcellus Mass": Kyrie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecb54c1404b7cd23e4ffad2b49867dcf28aea7988d60471fc49970a0a0cdb77. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199291301.
The Last of the Great Troubadours: The Art & Times of Guiraut Riquier, 1230-1292
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141f5ecdee471d2a79dc40fdf864c37be09dd340c729c56914447440c97fb4a2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJU8100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5821805bbaaca2e2d3a4a7ff714a83858e0ec49935966a7772968af4e7b6f92f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJU8100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c982cf841d8805600981bff58613f25040ba2f5f70977b268ae0b8bef0763c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJU8100054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd509e952c93e981acef9ce4861847b02f75c56d55b5c3d5ec2142f8fdb2ffd28. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJU8100055.
The Catigas de Santa Maria of Alfonso the Wise: Maravillosos et piadosos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da3d520126a9d37fa2bdb05d3f41683cf0509ca3ef0ee7eec268999fa6bfbf7. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJU8100057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934cb19e3f26a07f82d3b74f4b680eb11a065b1eeacde9abec79f3bebb2d539e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJU8100063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55b1a88867a241153a667e1eaae20edfe2b6636abbf44b5287449c5a4d54ac9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAT70801287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f3c2cbca602eaec781a4531a256c67148e3b2e2963213b9da3f49e3ca0417f. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAT70801272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b49070aeb1d9907f45ef537a64b45a61ca6ef395fe6d7d212efdaccfa9af135. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAT70801280.
Trouvères et Troubadours : Aux origines de la chanson
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17216ad73d0a6f366728181098170d91c1536563181ea72bab5ef548b7e2b56. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ092400168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7358cff2b718c0b8bd2116469be91c64b2d609668257710febd2081ea5afbb98. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ092400170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdbb9e53e0832a19753a769b74d6f19b22aeb767e5529360671801ae5ecd150. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ092400174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1f334f9e6b0a20acb93049a239adb654490d4d47ed59dac633d7f96bf22205. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ092400178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fecd0dba6242235cf554b7bcd2212ace56dcd09b41910fab32a1d755c496883. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ092400191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f5be58d117d67ac55dcb5a48a5b81c0635a7f0b9ebfe44987f80a6b6b57efb. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ092400192.
Trialogue (A Project Around South Indian, Moroccan and Medieval European Traditions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cfd9ef6b0723c0bda938ad0e71cef0023527d2331b8e7c1a1eb00659c1e0b1. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7891201201.
Lalitha saharsaranamam (Vedic recitation) (India)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c954143f9946076a1059316c5ac2ef160a48ac464ddd6242890cb120911dd27. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7891201203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13dac5a51d6ab0ce96d472518e123b741d66ab36dcd0645eef432b384c45293b. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7891201207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631bdd544396fdc0b965dc63d37c57340613bdd77074393e2a1c34c0fbe4508a. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7891201210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea0cc89fad9e8636eb645f7febe3da9f303bcf542ab1100698b080790ed9cd7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7891201211.
Musiques et Chants du Moyen Age (Music and Songs from Middle Age)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a99d9eb94f5a94af419f2e53a1032f99b58d506a08cb8846baf20793813cc0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV291367291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417fde067e95096acae4ca83e685b7c1911522a0ebc5f0f52408a9faca202bae. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV291367293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c1df19080cd2da197c78adc9023a701a61f9ce2a036b53e420ebbd84c3cb33. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV291367295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129c99e7b0a7a136ffa5385ae5db12f56978fb9a8e87a203e7806e802da0b2aa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV291367296.
Le lai du chèvrefeuille (D'après Bibliothèque nationale autrichienne MS 2542, lai No. 18)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf011d8f652cd1c79e804708ff4e3c7ee067a5617147caf8c5322b605ddb424a2. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ208913784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c32f0a0e55bb50c82152fb743f7689faa4e2f322c56220f8026d2af0f649a45. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7141500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37bde7915951fdcabdfa9e1cf871ab16bc8c5878c78ea5f58050947139c2317. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7141500203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f9d309a5114ecea05d6ecf8ccc637484cc08861a67071d1221e84f37b5616e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7141500205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5513653739dc9c711d5ed84e6587242e380b64313f457b79ab96438aeed33f52. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7141500206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236325f5bc3d841f03f93b9911848bb72c085b345a4059696717299c1af0fe94. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7141500207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b4c5268a4a03182518a888b9a718c39394ef33e449551e4f241bb85fadeaaf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7141500208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a290ab5ab42991e7875384f89c36b661a15e01cb4d65901702da8b28358067. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7141500211.
Trouvères, troubadours et grégorien (Mono Version)
Bernatz de Ventadorn: Le fou sur le pont. Chansons de troubadours
O Roma Nobilis - Musiche, canti, voci di un pellegrinaggio medioevale (Music, songs, voices of a medieval pilgrimage)
Guiraut Riquier & la cour d'Alphonse X le Sage
Medieval Song from Aristotle to Opera (Extended Version)
Music for the Medieval & Rennaissance Fiddle
William Shakespeare: La tragédie du roi Richard II, fragments (Mono Version)