thumb|right|Raimon de Miraval. Raimon de Miraval(h) (c. 1135/1160 – c. 1220) was a troubadour (fl. 1180–1220) and, according to his vida, "a poor knight from Carcassonne who owned less than a quarter
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce6f689f7fd653d7efb1854f5eff2ab9736e370026054691fdbd5e227efcffe. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc252dad-d817-43f7-b24f-4c5482f915be.json and https://artists.proofprofile.net/proofs/artist/bc252dad-d817-43f7-b24f-4c5482f915be.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
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.
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 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/USKC60714340.
La Septime Estampie Real (arr. S. Bergeron)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ac9c380c1ebb6267cddb3857308fcaddab7d25b864c9501fa23a7daba9d88b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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.
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 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.
Faidit: Vos que'm semblatz dels corals amadors
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3c2de54b34f7120b2cea249ff6802bfefafc078ffa4b07f2cc2555f6f3e436. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEA340001586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd396867f4aee008c2b7e70855957e34fa5b32bc9332acf02f095ecf3db905767. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/DEA340001587.
Traditional: Ah, el novio no quiere dinero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea613f6fdf9ccfe49aad04bc9f0d02c8fa50113bfb1e018a43212621698c6d08. 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/GBAYC9801441.
Alfonso X el Sabio: Cantigas de Santa María: No. 139, Maravillosos e piadosos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3cbedd15738553bc33f502e3103aae0a750e9031d9b392f445aab19942a7a9. 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/GBAYC9801452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1932fa66c69c7ec6a59233b5b54870fbb2a96b328a5ee0174b6df6bf5eab2614. 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/DEA349102017.
Anonymous: Villancicos from "Cancionero de Palacio": No. 6, "Al alba venid, buen amigo"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaea2c213585106e5a9eef6c53f9337ed810cb528ab1d0f4e86e9633972a3a43. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEA349102018.
Vision & Unsung Heroine (Original Motion Picture Soundtracks)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84894c31809d99dfeead04b3087a898a51bdcd0ed8abf192052ce4b4f84139b. 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/BER181334003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1814424c4d0adeea9fb395cbac1c4d302e23a30f662a907f7e801263bb08db. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BER181334004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a18a9aee75570477a1a4482b6ea1e20a75760f1e9cdef6a787d726a31d4bf40. 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/BER181334005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf39ae5011d08fb1b7a5fc161afad3452280344b27fd30234a1b15acaf3f7eb7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BER181334006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee5e736bffd9d053c857eabf9b850c5843879af5958f9f6a20dcf5465aaa0ef. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BER181334008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb452ac87e6d7732fe599d1010ea2515a1734ba4be801665dc0ccf4a2f1f8b9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BER181334009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5504e47c71f00deb5a8eabbf5627f278871179418d56a39946ef654668b69dc7. 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/FRZ147703010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x775eeb0d9bd70f1e325eaa9f0f34f7e7b1795af5edbb63b943c6fbaf2c0d6475. 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/FRZ147703090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa249c0240ca38ec407b66c043c1b5fc71b1a0fdf779787eba9115591f9ed97bd. 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/FRZ147704070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae1b8ba9a1507307965f688065eadbd5a9420934384ae185cb42ca21166c393. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/FRZ147704090.
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
Domna, pos vos ay chausida (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09ce0419ef5da23688ebcba7159d152dce84e67d2891a3d1e3a97670307b045. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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.
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 956312 (2026-07-02T05:09:12Z), 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/HKI199703306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864065c98c14a236d70689c37ad9c734975b7653808de2fe20a575dc2dbc10e0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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.
Humils, forfaitz, repres e penedens: Humils forfaitz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1b4da5a3736f1c15ed9845db8eaa0b6dcb032609e4f944c951b7aa110429f1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/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.
Early Music Recordings of Ensemble Unicorn, Vol. 1
Trovadores En Castilla. Alfonso VIII (1158-1214) Y Los Almohades
Moyen-âge, chants et musiques du XIIIe (Medieval Music & Songs - Trouvères Et Troubadours Du Xiiie Siècle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d676ffd433ddfac2560803ef5ccd4e6a30115673f68279225d86f35364d61e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX199421454.
Presidents in thronis - De Roman de Fauvelle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d8fd9296d378d66f0f903c9e8a1481ef76f3d20808ac7cc64d0b99231c64e5. 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/FRX199421456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc093a959b51089e0c0112dae5c1a129335c35cff668d8af4987c9babfe2bd431. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX199421457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb25abf5760285b7677939e908b6d3ba1423a952928d03c2ff500406d17aafde. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX199421460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ad79ced9e76aa03200c565c30c78b4b85d20dd2afd7d9960b73a41e995533d. 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/FRX199421469.
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.
Melodien, Balladen und Gesänge aus dem Mittelalter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4850a548d18b45d0b1dd2d5cfc1710711bfb1b6e0115b543e0e03e52d18481. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEY472373730.
Troubadours des XIIe et XIIIe siècles, Vol. 1 (Minstrels of the 12th and 13th Centuries)
Troubadours des XIIe et XIIIe siècles, Vol. 2 (Minstrels of the 12th and 13th Centuries)