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 0xf4674f8b388f6f4ac72fc7752687f11a3eeb74fb42b4372590e4b6225c26c120. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b4cff735-8eb4-43cf-a725-97e5063e619e.json and https://artists.proofprofile.net/proofs/artist/b4cff735-8eb4-43cf-a725-97e5063e619e.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 0x1356a43c6d1d8e66efb704d476372b581524477addf248ccefa5da7dd4d739fe. 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/QM2PV1683257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8cef3a8cb0503415e440b98cb98b6e2733c50e6f4f0cef87e83da12a86f34a0. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QM2PV1683260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c31ff844730fcfdc2fa700801cf0cc2bd4f0ef0bb839a60cc3e64fec88445a4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM2PV1683264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d3d80fa624fcc5a2e075d1385542525cf8d7fed598ff163c9e9df3365218c3. 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/USY251941545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe5ae2e96cf7cf94eaca7cd291cf3ad2af9215bdc75015eebb7c16579f52c5e. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/USY252415224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39688507585c00670a9500c9aab4146719b7c96474a7524e9c6fafed86221d88. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:47:17Z), 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/USY252415225.
Burn On The Bayou: A Heavy Underground Tribute To Creedence Clearwater Revival
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c4709d40ebbf5f8a6233d282675df80245d228a489e44bc430af80e07d0ac8. 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/USY252318816.