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 0x9786b70a4c531d53f24faa8db4791fa452785d5b9a4a0f7f8c91aad36a857f6a. 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/59f4afa7-eb59-4a9e-aad6-91f647288dd2.json and https://artists.proofprofile.net/proofs/artist/59f4afa7-eb59-4a9e-aad6-91f647288dd2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xb00bb5c59267e304c2be3e35cf41ca02f8f6e837ba22724cab9c76a9e53b8f58. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/FR6V81293344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcb14bb1d770bb508761d454a16fb542c322a993814cc4c6df5edd3ee77501b. Chain 2 (Bitcoin): anchored in block 957523 (2026-07-11T04:55:40Z), 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/FR6V81293345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3891505c9457c2e948a32d005f54e13b3216b87206d4204fef2ae80edc3a0d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:10:15Z), 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/FR6V81293349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a7d1912bc56f090b400397b30796c237be6fb25436e13cf9d6c521eb83d36d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR6V81293350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d725eb1050187bf7af7e505a2e11137531fe28075e3084b38da7940946d145. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR6V81293351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c070228cf22da4623e533dd26a0941044b2a8b6460c5160d851525e44a88ec. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FR6V81293353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d22371e59ac582fb183500df487aa59eb0fb2a60b03d5a0eef4794c5bbb07b. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/FR6V81293466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d207dc270bde877d2c86e58e165ffe3f376a41b95d4dd6c4915bc8a3a102f26. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR6V81293473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9608d0fbfd2cbc3c2b6d4efa39591c406c2354fcfeff607d0587818f00eb1d2. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/DGA0S2468455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab47ef74a0326ebf5d303c1ec841979b9259753a701b87369e115ebaccf2907. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:45:22Z), 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/FRX452542063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2798e6089ddce75518cb421ca730734d9a0d0bb73ed0eb66471c0a19d30d0561. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FRX452568548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84a97956e7e543e3886b01f33b9d0c2516aa60c0ee1b08fba842f28365460cd. 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/FRZ189800120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb12563fa92e276e59f24b3ff81f7231a49c4251e3b08454f96cc90f742ea43. 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/FRZ189800124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d77fe45a14972532843768e37adf6adb9660faad6633cbc8962b899955e3bb4. 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/FRZ189800127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fcc7942de5062350a11167105d39b2f8c9114e8b82972ed3104de7ee720159. 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/FRU841100803.
Classics radio spécial rap français, Vol. 1 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f03c074839e7e071dec8fa08264c719d14aff5122a6ded63e5d5fdb78c8151. 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/FR8GV1922770.
Freestyle original bombattak 1997, Pt. 2 - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd109067d58af93d903765b99161ea0ea1a40f0418377d7e56dd45fd1d10fb767. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR8GV1922880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1553f305e468e214c9919f5b3041ac018b764accbdc409af73aa960380c5b9. 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/FR6V82556280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa844d393d1afaa1b615c10084debc648eac62393c91d0bcf86cdfb9ca80695bb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRY689802410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b96f895683f7968ca5ae11ec752328bb527143411bc46b0a38baecd0b34437d. 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/FR2X41818867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3a2602314f7ed0c50888635f67f416555bf5c997bcc386abfb1b56c7ec762f. 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/FR6V80258143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6b0b20390b23fd9fd4beb52fee7bc5c623658f987883fc2fc7660afff2c3eb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR6V80258151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9c787aa37d24b4a0203e899c7a60007e683c5a89602e5a76a3e94eb43189e1. 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/FR6V80258154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb143d466a09c1ab6e567c3ce5b8c399de9145d9189a483540894656a048091d. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/FR08S9900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860e2771a7eed9d73f280313c8a9bd2375fa968cd122b430fbd9af33292e6642. 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/FR8GV1922910.
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 0x677ededdaf21d60e1dd1ff831f9453703e21847d9966de498e44e8a1760c70a2. 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/FRZ080300285.