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 0xcbd1912b057daadb9a064b0cb8b13e4a5bd65a9ea84c62e8d6d62e162a30300f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c71f7b3-9f82-40d9-a9f8-706b81e79dc5.json and https://artists.proofprofile.net/proofs/artist/2c71f7b3-9f82-40d9-a9f8-706b81e79dc5.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 0xf0ffcb461c658fc7a1182a973b224903db9bdd017435b988152649e722444bac. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR2R02000210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1684030b81e5fabcb41c2e5d8c871e09a77da22e4e43db397ce17117f2abe7cf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR2R02000220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083ee25fe2921f16bba783a67bc616271e79348797f27f92934000a1359b7d57. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR2R02000230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ca014b56066d9d39b68213c1dbefd4f722e62dcdb450cd0203581be11610ed. 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/FR2R02000240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6b2c301dbd740bccf13c2fa6504a9ac7ec6d75119fea4103cf39700b5a67a0. 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/FR2R02000250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08068c51990d49eb3ab33dd522a730860fb57f666b82e1a721fbd50487d57291. 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/FR2R02000260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5473033e8f2bf4a25179d8ca28cf1d03611ec83e6224ba32dacb65f0dfef4bd7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR2R02000270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b4474a8d3abb356b81c60d0e6f83aed9eea6b5c7128ec1c81290d9a0d61cab. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR2R02000280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfa4f6ecc49c7be1bc9750e14b4f9eec6705d0cfe3e28fb593fa98c9d6d5dd3. 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/FR2R02000290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80222202965421a86df196495793162067006b7585630b515ec0f97335098d2e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR2R02000300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589fad27150e881dfa9d9c4ce9cc85adf734602e86678a6df7ec8fcc0a55ebb0. 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/FR2R02000310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a7d4b13c7463c13087ec0daf75daf496461c4d64d6051622fbfab9bab2ed4b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR2R02000320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d7897f9f44b51c1590587714de7b1d36c3273828e37dca5498839334bd5129. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR2R02000330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd61c20df3bf3605e2a2de50cc49c38dc480083caf9d3b2bb7e3dd1daa2ccc4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR2R02000340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda233b41c190b629c048ba0ddc0742db08bdf68dd57ff69e8569f3e00f2205fa. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR2R02000350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc347a3789b5f0603593e580a0dd75d18e7633caa14c94ec4ad865feb69646c7b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR6V81745382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628d4393e6e8fe50d9cdbae40103b0d2ee01baebdbf4dc47dd39733dcf362cc8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR6V81745383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68c336851a2ec18e9addb699874f2d8f5a95a92f005a79a8e0aee126157e2f0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR6V81745384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ad69b11d4dd8a63455477698491292436dc574d8e0d2324f2a7d543394a4e7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR6V81745385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8aa34fa4c6c22f5221a19dc1ef2eabb4fc04dc0b6a945d1715bd68cdeb3b5f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR6V81745386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16bd065e29d359dc4ed23eee0112f69b687368d7f7115628116db75178d9df5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR6V81745387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f7155f092af3b66c0767b9d61ca293cefb5f9513f7d6ad4162a40738678593. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR6V81745388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913fd9e8ca0df33837ef7bae2f38eea423d8b6a509b58ed9b89ad2448d8bcdba. 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/FR6V81745389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11889192c24553b287d251126ffc604bf8d47a981ae6ddb463dea7f3b93b4665. 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/FR2R02300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe802a9f24b9bb6b78444a274c7c1b5b65e55eae7bb17e4e085d663b84b6468. 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/FR2R02200450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a7d4b13c7463c13087ec0daf75daf496461c4d64d6051622fbfab9bab2ed4b. 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/FR2R02000320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083ee25fe2921f16bba783a67bc616271e79348797f27f92934000a1359b7d57. 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/FR2R02000230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08068c51990d49eb3ab33dd522a730860fb57f666b82e1a721fbd50487d57291. 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/FR2R02000260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9365c7fec028fbd7223b26d083228d0867a81c946073cf99cd75850e3f1c1a24. 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/FR2R01700590.