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 0x359be02544994ea140b703309304a207e3c502d2b09e7ed09c458340a5cc38d7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fe3e4095-58e9-4be9-adc6-cafa7f97ad5f.json and https://artists.proofprofile.net/proofs/artist/fe3e4095-58e9-4be9-adc6-cafa7f97ad5f.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 0xe102d9bedb1e54e68b9f313dafc81ba95c1eaebbc553ab783ab0a0f9e0a4c63c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEA749200353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3e111aa09b3fb3357b6eb052c11a165eb87c5b0133c9a2194e65ac9d34db22. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:37:08Z), 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/DEA749200354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294eea3cba5785dd923ac55859220b8b912e41e4c4c5cacaf4262226df8c0207. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEA749200357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0b015f7ea0f23f6d140f39118741457b40fec547e7cc784ade095d073c65c4. 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/DEA749200359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2e71db0756e1de696f682db03c5b417820b48bc4a700a9f9416be8bc79669c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DEA749200366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc24b45f76d53e856b8c6ed18c8c97058b2e46afb17d93240ed332d758d0c1b5. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DEA749500393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68ca053c84c3154df4143f9741a164b84c05aeb1bb1d108e48d776c01ec069c. 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/DEA749500394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3020d4dfbff5f2c673774c7fa27206fab948ce0c1cb01a6eea879c5c53dfe060. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T16:21:48Z), 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/DEA749500397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08d49647eca43e2a00d270c3998ebb7c7571ff471d7e28856dda1278081b604. 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/DEA749500405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552ddab2d28f96f590f5bc70c6ef8f9dc14c0d669ca4a2d21854aba790002b65. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DEA749620088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a7c5eed0505aa87e7d3e6b4b2e800a873f72e23f8084bc2f54da18e8c24a97. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/DEA749620089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c2ce3378ffda79ec7f5f2a8feb9fc65aecbd50ee29943bfdf47f23c6702a4f. 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/DEA749620091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3503ba1140bbda2c4c2e738f06fe939c0e70b40d01c2a9531273ca646092de. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/DEA749620099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf209fd01696778a04796c680f91e770e9b9c5d16cdf425085f566af8e48ba197. 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/DEA749620102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd949f28144c36f05d522981ff078cce5d154502ee3262ab4dc15e6dd46ee99. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/DEA749620103.
The Corner of Broadway and Main Street, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec446e32a70fd3b1410214620b9d919cac4ce32d8bd488d657a9f2ac87d23138. 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/TCAFC2023113.