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 0x87296ff71db61e5def0f800049829e228534c7628e11066f23164df439b4ae6f. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5dcda12-bab8-4dc0-9cdf-808b033c5ead.json and https://artists.proofprofile.net/proofs/artist/d5dcda12-bab8-4dc0-9cdf-808b033c5ead.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 0x7dccf7f5cd05a7dd6ae31fb23b0337c6e3e903a9db6da2a0286a771faf8852a8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USHM90649011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29395e6e2cedf5e80df251dc5db5c8494e7f90eb3c867041c0749341d38ef7a3. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USHM90649013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda45b800af3fd04e4a1817641d70502c9f61a31b899faf4ebc682765831c6fac. 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/USHM90649019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bac3a68c3a0014a3c8a29bf03db92adcc0f520369d6d645e4f9cd08bd2d9575. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USHM90649021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68869f2b23399f697533a7a067acf458211120d4fbce9d1dc910c321de06a6f. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:53:36Z), 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/USHM21321410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e256095880eaac85c9fd2f72d298bb57907bf111180599d11bdaef4c60ad6ee. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/USHM21321412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7385025eff8be3f874c07d3a97e28628fb609c2e94273c6f4bcf0d543bc512ce. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:25:25Z), 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/USHM21321413.
Choices (Larry's Country Diner Season 17)
Honky Tonk Song (Larry's Country Diner Season 17)
I Don't Need No Rockin' Chair (Larry's Country Diner Season 17)
My Infinite Love (Larry's Country Diner Season 17)
On the Bottom Lookin' Down (feat. Billy Yates)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5270e7a757b1dd5ca724f0615f5dddfa9e65d4eefe408fbd1cdce067a2e02e3a. 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/USCGJ1538928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35366429eb9022d9d53983f819684715fe81247ff38c2ffca6c5a7a6c5e74f68. 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/QZ48P1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1a897233bb06c696adc41506e77e55c5a4cbc2226ada71d57f71ce86bb9fad. 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/NODGC2101010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94b67623b48ba068cdfe90c4b079d8dc2873ea6db94829c4c87f309c476f3a8. 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/QZ48P1600010.
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