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 0xa9aaf70fb91d20370e2024d03135fba473d5582ec4e58cc07e1cbdd9112d1d34. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5656755-2702-4a1c-aa80-2384801d802e.json and https://artists.proofprofile.net/proofs/artist/d5656755-2702-4a1c-aa80-2384801d802e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Improvisation à la Cithare sur des mélodies celtiques et juives
Ma Minithèque Vol 21-Chansons Et Rondes De Toujours
1er dimanche de l'Avent: Graduel: Universi
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 0xb2afc23b81e8464e5eca2ef9c9380bed993ee3777e7290ed47cf4d9f2f137e3b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRZ397500060.
Abbaye solesmes-Ascension Pentecote Trinite
Abbaye solesmes-Sanctoral 1: St Joseph, St Jean-Baptiste, St Pierre
Messe de Saint Joseph: Chant d´entrée: Justus ut palma
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d609cf3d052027d97c1e41d15c78880d73d2c99c3c816807d5fbff43f46182. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/FRZ396200190.
Messe de Saint Joseph: Communion: Joseph filii David
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31134265c2df2454d6401b6ef186b7322910dff5874b79288a9a4a8218441925. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/FRZ396200270.
Sanctoral 1: St Joseph, St Jean-Baptiste, St Pierre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da79dac16e76921e04d0eaefa8ae5ccac6eeceb76714c947a0b3a44c644fa53. 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/FRZ396700420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806aca2cbf02cdbd8b0df2be5db2b0fb3ac85e17fcf605964d536eb9738ff387. 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/FRZ396700450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34414f05e4689df8b11d4d6f51ee5f5e2d0bef064a83e5030ed98a2dccf07cd. 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/FRZ396700520.
Fête de la dédicace d'une église: Hymne: Urbs Ierusalem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98947e7ec1abbb4dea1e32ba04128ccaa086eeb0e58444fad6ce4510671f7dc7. 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/FRZ395800870.
Messe des morts: Chant d'entrée: Requiem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e704032ccd0ade747157a419dc390d3e300501316272f4946ac24f830219b4. 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/FRZ396700410.
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 0x82a2b3df1c4567e2cd8adc784e8868c65748cc838d6df9ec5e920140abf16eb2. 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/FRZ396700430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd766478336ade35ca4881c54674dfddee9be00e1c46acce2c340ea54f6964c3. 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/FRZ396700440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c596681f2c6cfb8d4ed8c8fe19d301b8f3b5067f93b63abddb38cbefc92378. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/FRZ396700480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a48e83159d982fa90f72c04e7996f6b8b4fba87275d43016ce0d453190f41fe. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/FRZ396700490.
Les Funérailles: Cloches: Sonnerie du glas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f58e8460dac2b54dd6f21c0450b7374d0decb18e001b66818a3323b4509f3c5. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/FRZ396700510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8be83873630d480703a0ea81ca6d9e90893ecb9a56ea94caec8f2f22f43453. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/FRZ396700530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ee235cbebd6c64f1080ebafcbaa5e4af739217f38d92f52f9b8876490999bd. 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/FRZ396700540.
Sanctoral 2: Toussaint, Ste Cécile, St Etienne
Fête-Dieu, Salut du Saint-Sacrement, Prières
Trois siècles de chants sacrés en Bretagne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9dedabac7383d897687f0a04a9312bffb2447c2ff953117a5cc6cb7c3b81a8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/PLS921636992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204da001bd0aae447409bf41e5b180414547ec0d28bb382381ad51e40a71f5bb. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/PLS921636995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb7357b5edd03885eecd839cfdb795d26c31d3cf954a397f96c1dbf5ff8f71e. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/PLS921632381.
Santa (Polyphonies corses sacrées pour femmes)
Jazz Christmas Classics 2021: The Best Renditions Of Popular Christmas Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf30984125271d5eb13850f84016bfb7df62b212eef8cb15c2f6ec23753c861. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FRUM71601970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96b401c0265fa77374fbaf75cd3731c67ed344a0dc0e4d72eb199ac993051c1. 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/QM6N21441025.
Les meilleurs génériques de l'histoire de la télé, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5419f8426accc622bc40b1223c37744aab328ea434161634b817d6e52b183cab. 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/FRX089850123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4eb790fc0bef5aade4594f24360abb8a744dc1f68c53333c38435020ff3d3b. 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/QM6N21441024.
Dunmow Flitch (B.O. de "Bonne nuit les petits")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92009a46802ece7091cd8a30aaa2a2f1917ff3f25553e3f291c48b0c1cfab68f. 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/FRX089750237.
Der makām-ı Räst « Murass’a » uşūleş Düyek
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d39174ba077cb87993c9d62b2db8f2c11b7a0bc45e493ce1d63ef507df254e9. 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/QM6N21441032.
Yankee doodle (B.O. des "Histoires sans paroles")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5419f8426accc622bc40b1223c37744aab328ea434161634b817d6e52b183cab. 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/FRX089850123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9f680530b72286a67825dc98d7db16b90096169734609df7345af6c5b6ce28. 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/FR0T70900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ce3681d12ee7c1ad704f0cd55a75b150880827913ae1ebd20c0a1b04c107ed. 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/FRUM70803972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80b8136d546e0531464ef9585f1a60adeddec0b4ed7bc61a40d84ca7e3de19e. 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/FRUM70801564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa674bb57f6ef6b62f44f51bd65019c0266404f55925cd70f561bb84c1977b673. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRUM70801593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80b8136d546e0531464ef9585f1a60adeddec0b4ed7bc61a40d84ca7e3de19e. 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/FRUM70801564.
Makam « Muhayyer pesrev » – Marche Guerrière Ottomane: I. Taksim
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb175538a49ac9c549ec63cacf374583be6663db9a4a8c415882bb8cfcb5a2995. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QM6N21441016.
Makam « Muhayyer pesrev » – Marche Guerrière Ottomane: II. Marche turque
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaba8027ed209b23d1d117f3f06ff47492b6d72e89606daa98d43d821db8ed0b. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QM6N21441017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8bf4031e81c98c334c55b84b4af4daa073194c7cb411dff146b88fc7473ca4. 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/QM6N21441018.
Cant dels Aucells quant arribaren los Vaixells
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1e5d8a7b8c696d19afdf5b5c4ebf240351975349682a0c02487457d9e131fa. 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/QM6N21441042.
Der makām-ı Uzzäl Sakîl « Turna » Semâ’î
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6690231e65fb48d0145ba50bc8a495c4003fb8a92393f6972cfe9392e06e04fb. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QM6N21441049.