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 0x3b6eba9a224d3ed2aa1635bd988f47966622f6980a8fa96c9fe6119b139b0c8c. 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/6bd0b424-988d-4bde-ad53-9ac07f6c3c4c.json and https://artists.proofprofile.net/proofs/artist/6bd0b424-988d-4bde-ad53-9ac07f6c3c4c.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 0x96e9c513923aa28eb53edf63e3baefea801c6790583e563aa633a36c806f5108. 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/JPV502100573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87691920dce409f92e4cfb293a75e79ebbb8429b6c72e8ab7ef772d0e576f1a2. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/JPV502100574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e83798c6963db00cfa31c27e10d2ba73db928039d1ba8ad319775811d3f1a5. 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/JPV502100575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5325a8ca8579d9572f61ccce2fed4e7a58a7298b0e828e1389529d49c76ebd86. 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/JPV502100576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93cffc35853130ba16c9da84407600ea269a57fc47806fe8b106468b656f9183. 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/JPV502100578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4dc104bb5306adf5d5fdb54b7e2a0a00002e9672d6204754de7812727f0a338. 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/JPV502100580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72bb0dfd7c7aac63eac97a21f4fce14555cc38a456321d172719fc384575790. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/JPV502100577.
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 0xc7270f652d1f2e5b7262bbccf0f3787377d0743e257d3ed8a1b277b257689e22. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/JPV502100579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7099e6e546595c4338e4616bb01971fa6c4b404843c6306661572c2a083a784. 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/TCJPK1903061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98de9e082408895ce60d1fdd98e3d7694c2e247f16e7e953f2b7ca36342ba8a. 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/TCJPK1903348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f3825c00041213692fdd01cf1f44f3fa7d8f233bd401224582a4c37b312d66. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/TCJPK1903350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f4a2825501f1e101184d6f150b8593fc0b5cb67c8016fb175a56b9f4ed95ec. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/TCJPK1903356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25fb536c1a12f3b52c07653220a8d00ecc6f828f818c4925205f41d7bd704f1. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/TCJPK1903357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb121a1224c8b302fc27f9bb456de4b31b9c8f31eae04cbd0fd51af5b4f6daf. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/TCJPK1903361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9713e6cb2cd34b84d7c262230cb0ca1d3976c4c667c0b00a58e0eb036298f79. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCJPK1903363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87c9c47c7e69309da23fd9accb2a8dba322b6ff9511cf65885ce45b81a1d19c. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/TCJPK1903366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb597c95c4bc02763950173ba6eabc9aac4de7d2715bfb4b20b6135c26776abe. 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/TCJPK1903369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91ab0d23f55f3d5da31b8347fe31c8db882579fc46ba2effda8f8da6b348e87. 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/TCJPQ2292357.
INCREDIBLE / INCREDIBLE - DJ SCRATCH NICE Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7c1a5042bbd8b714d4d834cf2ea3747ed765f230fd82ac35e27e6f6439c194. 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/JPV502100410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735ea7dfdbb6ff921c52b3d97e740cb6ac9b28d74c67aac9af306e9eb758a6d6. 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/JPV502100420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6f0a82b653caca5cf138dc4683d9679230db3e23a35e4a65945157a0bbd1b5. 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/JPS802352927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9fd7a95bbee8163df840b091a7538c03a1d245cc487da8e97992c4b08897a97. 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/TCJPN2178934.