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 0xb9276f8db24458ee882fc357b2a837fd6d3b18e7a8576eabb6d2593a9cc17d36. 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/ea457a31-72be-41cc-98f7-437569b17f8f.json and https://artists.proofprofile.net/proofs/artist/ea457a31-72be-41cc-98f7-437569b17f8f.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 0x5126047b04e8a3bbd7687180c16f06f77561dda01318360b4173406b08883504. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/JPVI01866960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3616ebcc6369782bda90df891eec810c6205d0787d490eb658b0638ae3a0489. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPVI01866980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d8664e63ea276664f8e1ef39f43f119ea0e007700171c9b366915c5fbfc9a4. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/JPVI01903277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2360dd9292b717d0c31e7a1e23c8caaa10e63ed798192580759c2bf66d1ecf2. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/JPVI02000876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26ec0ade344e43e9c2e20b0d63903d49f87f4eaebbc2637651a7b98c7d0ac24. 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/JPVI01901866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f2d6d2353b7a62bf09105f4a1c845c882145716e603b9153f1ba90edfdb263. 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/JPVI01903275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b550e09d141b2f1328bae3aaddd8f3ded6e9ce2af494bbf4d35523057274c1. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:53:11Z), 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/JPVI02002860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276574f191e3ad8ea131973b1a78a4eb9a041b488ed16b11027eee89580af090. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:42:41Z), 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/JPVI02402037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68cc41424e10fdf867f7853d2c54530f4a50e4810e8010c2ba9d5b16d41aea63. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPVI02101160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdddcbf55c2aba926cb56b19f9f0c9aea08fd87fc8935baf52d830138efdfaab1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPW561903176.