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 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 0x4710b8dbe97490ed47167572aed6205a3d13f77ac5fc81852a515cd4742b707d. 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/43438336-459f-41d2-9e92-c234a3eb78f3.json and https://artists.proofprofile.net/proofs/artist/43438336-459f-41d2-9e92-c234a3eb78f3.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 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 0x2367e73f4ca32648c60a51a6dd26918cb746ad23fbc76a8cc153b5fdfc872d33. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/DEL211903764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bdb4481390b064b162afcb1225e18cb7fb5e214904057306e78382782786ab. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCAFM2185253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0bcb3d87083953120387e18bfe6c6de0754b257fc757a8a59fd3fb4e40789e3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEL211903755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e95ac503b2a614955107bbacccd4e9603042e2f586fd525f5dd1321f92ecd7. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/DEL211903756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4db75029b0dbe87fadf60584b2109d187cedcfdce5f3f3237d87c9472b365a2. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEL211903757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d1726d90e5affea2a364acacbbe5c58e26e949df8e070a324ea61620b78db7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEL211903758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6351e984bfeaefa52dc2819f67fa3475a86a00913dbc589c3cc9dbd1bc6d1055. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/DEL211903759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ceaadfb5d326dd540e2080ebb49cce8bcd7950a335308f91b3fec617c1e417. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/DEL211903760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a606d83acd42818c2eeb23c74b36bd7bfcd11d13bf88e269b718fd1c52f018. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/DEL211903761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0156f4ec9e42a80c851c18f5b230f2b4baa1b4280cae6011ae75e8e8cdfeab19. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEL211903762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef295ee7759a0da5912592496c6b385a5e11e3f4988229aa4389b51644317e07. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/DEL211903763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2367e73f4ca32648c60a51a6dd26918cb746ad23fbc76a8cc153b5fdfc872d33. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/DEL211903764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d61f30c327b953367dddd4743aa22e94e50434c769bda1f769c3a25909e6383. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEL211903754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e95ac503b2a614955107bbacccd4e9603042e2f586fd525f5dd1321f92ecd7. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/DEL211903756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d1726d90e5affea2a364acacbbe5c58e26e949df8e070a324ea61620b78db7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEL211903758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6351e984bfeaefa52dc2819f67fa3475a86a00913dbc589c3cc9dbd1bc6d1055. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEL211903759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ceaadfb5d326dd540e2080ebb49cce8bcd7950a335308f91b3fec617c1e417. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DEL211903760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a606d83acd42818c2eeb23c74b36bd7bfcd11d13bf88e269b718fd1c52f018. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEL211903761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef295ee7759a0da5912592496c6b385a5e11e3f4988229aa4389b51644317e07. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEL211903763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2367e73f4ca32648c60a51a6dd26918cb746ad23fbc76a8cc153b5fdfc872d33. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/DEL211903764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4880d1244510556f56b3a5d0db0a02b5afe3941dd772aaadf4710ba52326242c. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/NLD232021002.
Mean Mistreating Tina (She´S Got Me See´n Double)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efe4649d7dbc3d774ba5147d36eb01364680f2a878e8d784bdaa759bf13a009. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/NL1VU2205087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e46accecc7b06a5555b1797835be690d77dbf7eb4abf08219a390e1cd84d79e. 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/NL1VU2205088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf17a6c0cce153c7c142e95904512ed0d0798661475a81a3306a571521b28aac. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/NL1VU2205089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc39231d6b5d85f4b57b6e33afb94da97c0fc2c4d98300bc68c3bb4490e8738. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NL1VU2205090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4e0d87bd0b7ce34cc2cda22371d7879f6fee7b13e409f09970770a1541387f. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/DEYK52400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571426879a04d6809cd26447d0c47abee79acfd784ec9bdd684a63dc67dadedf. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEYK52400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d8dada14de6db15c8cea176b8729f171a968f3c73e7d889f442fde05b1911a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEYK52400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8043789501be83aad8d10bd010d9dc095268b9fae0fe48c11af21914869be36b. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/DEYK52400048.