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 0x47d36b41cf63017ff0c6997be2233613f22cdb58dfbd33e9c82384dc6279d441. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bde7bb8b-10d9-4d9d-aec3-de589cceef95.json and https://artists.proofprofile.net/proofs/artist/bde7bb8b-10d9-4d9d-aec3-de589cceef95.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 0x8174f5d053ff10c3e9d0ea19fe8cd6890248fe6659f3062a73cf5546d9e57da1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM92196506.
Confluence (feat. Richard Russell, Sean Frenette & Michael Mandrell)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff80a540ee1124684066ae51e7f2e5e075f98dbb17735f9592318aca6370682a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USCGJ1952271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807719233d5e6e25cec576acdf7dbfbc7bf61c5292b79200b1bd92d19a3afcbb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USCGJ1952272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61faddf923f8b26a2d2622c44544d774a7a22c045928cc1914e95271191cf073. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USCGJ1952273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab77a671237ff984ea4ee7b29218acded6be09653dd85f36cb93d2d2b7110b6. 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/USCGJ1952277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca532579d042dc154cff5dcba8f7a6725e5d6898423e80f9ccc1a2174f3fa49b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USCGJ1952278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7fda2a93063a14d726973a4ce705c32f1f0bb47fb514d18a3b8a1887967b17. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USCGJ1952274.
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
Sea Star (feat. Michael Mandrell & Mark Eubanks)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe9f8071f05c279681cd12434a2739f0b26c4c68798fb90f06b5e5ed5d27571. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USCGJ1952275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e15a40ff9e3c413a90963df56ac7b17b6a4a1cb826044fbbaeb0fc54fe32e9. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USCGJ1952276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8062bfdeb74c85d69424ad02855d3270d8a40b1bf6e44c1271609973acf55f01. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/USCGJ1952279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e08b792fc3f7f56e9fdf1022bb364a250fedb4a1a89e8d95e5b7b70f9711b8. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USCGJ1952280.
Bobo's Farewell (feat. Michael Mandrell & Mark Eubanks)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdde22ea56faa2c0ed1576f6e49b75925d9741360da815c916e77681b4f1c91. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USCGJ1952281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a96945115115ad891c4a207208a6da277e54a95051a66fd2e13151fcce7250. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/USCGJ1952282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7c4f2418eefdbb0e16645d3f15ef02d9d732fa3264a95b90b5cc39982df971. Chain 2 (Bitcoin): anchored in block 960231 (2026-07-30T08:33:28Z), 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/USHM80981485.