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 0xeb61bad413f4f6bb116d525526f99e12252f32e77e0080cad3862e0bb26e9a23. 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/fffc0fc3-13d4-4540-943e-f66895dd0f28.json and https://artists.proofprofile.net/proofs/artist/fffc0fc3-13d4-4540-943e-f66895dd0f28.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 0x5356e968c7741e10761fcf6698ef1c5375beafe5693b6286fe952209c90b861d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR6V80924482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62d8a9521b17659accaaa96b131b8bcdbbbeb47b6e88e355abaf7d66aeb117a. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/FR6V80924485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67b9ed31a6c99a9b96e10314c0ff1440c3e159ed9a0c8f588b6532297030b91. 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/FR6V80924236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f97fd0ae3e4b34cbd3070ef988190503b86cbeb27cd9f5f2b33732baebe31eb. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:24:10Z), 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/FR6V80924237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0611c47751c329b0cccd1510a46159c1efb1292bea360a5118cfd8bb3fb3eba. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T16:03:31Z), 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/FR6V80924239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa964471aa823dc294e5e6ef1718504cd19943b2897d1d26485404e8a36771a3b. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/FR6V80924246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5835bc6283dfe6c156f4b20f18fc6ced4df9b760c2379e23078148db90b1c1c9. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/FR6V80924251.
On Se Reverra La Haut (feat. Wallen & Les 10)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9299addf3d3a8bc1feacf83b21881ffdd8e6ca0f41f2bccfde26c25a00b75d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR6V80924254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc483bf445fd0b3dc6b91390acff47e7376c6be6a2f9d6fb8b5c0088df9613f39. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:33:04Z), 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/FR6V80880066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352785f4e1d4b51eda0da8d40c8d5c675bc349fc326b48e76273db307a2be8e4. 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/FR6V80880068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0271d7837f94cdd15e12bffbf062caebbd5772b39211dcea8bb7910458f5405e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR6V81175340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97ca298b92848915f7e316ec27be33d3a737705a6dd517d0259b7b012acdb7b. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR0U91200260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6eb73b5eda61cfe5d6e89669f516218f288a04fb889be33d38bdf58a925767. 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/FR0U91202338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf274c6cd8095f43fd30e7294bde57cad68ad0f2b1d90b062a4d512f5c7e610. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:32:50Z), 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/FR0U91600050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97a44cf6f72e0ce93da137aac8fcb7f268773e55e26ae1e3637a33e788fa674. 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/FR0U91600052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abef7293e168209a08fdeed0657c91c0508eef9641f8c5ecdff62259f1d6ef6. 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/FR0U91501619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82688c7a5c10bd90f6777796abd0efdaf23fd26b6dcfa2e4afbdb705211473a7. 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/FR0U91600054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f70faeeaef6967f83d4dd6364b900bce97b154eb6c09f25a9e9e581a94b325c. 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/FR0U91600056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159e4c5b772c655f71841e1c0e8b1ae238fba084f3b68f0f766b5c5cf8ca8bb7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/NL4NL2107232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe121259b066f0e30f6ca7c7cff1cd6f52c72f5bd728fe4fe0db529de2ddd6bce. 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/FRR642400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3cc10f08a05f3d0bd500f45fe74bcc5fb9a261a5501140d4481cd8d8e6e3ab. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:25:28Z), 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/FR0U91400932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89ba19b85e5884b03049741952522416dad7ef3ca83cce51f4f47b71447ed25. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/FR9KQ1800150.
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 0x9b0a983ac506e472611175f5140c1020e1125d1e7d580587b583c5f5c07d95b4. 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/TCAGL2206446.