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 0xfd2bef2af12e7b5947f9f1909702331fd6bea6c2f67dd1b62ca2dc9153e3a9f2. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c08c4a5f-958a-4f47-b49e-cc04134b893f.json and https://artists.proofprofile.net/proofs/artist/c08c4a5f-958a-4f47-b49e-cc04134b893f.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 0x4e0e883bf6b722b1278a357e8eef885c7caf77e99c47e787796eb1d8005b2d29. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CA7851900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bcb2f9c142d767f1e0ab0aaefccf02424c65cd5892b90c3e050de124a5c21c2. 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/CA7851900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e89408abdaac4bae0c102eab632f1f78bd3e2edc88e0d6d2dee8e7deb6f315. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/CA7851900001.
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 0x8d67be5c0e0635f683201ad92c21ffa308383de082d69a62a023db587b6b16a7. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/CA7851900003.
Sporting Paddy (Live at the Dayton Celtic Festival)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb56b2a0a38cbb8e95587f678d4863ea7f1067ef7da16b2d478872b935405ac7. 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/USHM92456605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbcdd179344964ea0fbb3617b3aed0322544806f161374dc7479c3dfe1e1153. 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/USHM92456616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36df576a16bd14dbc0b110e0ef7d46036ef4625aa8fabbe907ba2d629fa3d6a. 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/USHM92456617.
Renee the Love of My Life / Waking up in Wonderful Wark / Seville Suite
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156d59fc26f62f75754e5116cae5ed3b57d42029d2be10be257ae9a317c3c43b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM92456607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9ca94897e907e94d8476bdc76995d1abf1996db6171e60f557a277fb29be9d. 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/USHM92456608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe466b2bddbc90e5bb4095d9e2b15ea2e03c36d6c3cb7338b1deda876e13dd5e7. 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/USHM92456621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1848330f7e2a202ed501a4a928e10616966644a4b797cf00e034112ddbcc3549. 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/USHM92456612.
Ashes of Love (Porch Sessions Demo) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f6805d69f4c7bcb9bbf290d6e41b69f3d7377010bd9eb4ecc08582f4786535. 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/USHM92456623.
Barn Burner Mayhem (Live at the Dublin Irish Festival)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe189ae1dfed7f531824087023f73df33bb4d0c2d891c30aa9b991e372c03cbc8. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USHM92456619.