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 0x06b539049a87dc7d3ec21432a2c0cd436b861c3eeba0336a61a7c9f578ae9a7b. 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/d4e25724-3e62-4162-a9e4-11591aab971d.json and https://artists.proofprofile.net/proofs/artist/d4e25724-3e62-4162-a9e4-11591aab971d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Brendan McCreary Sings the Love Songs of Mike Stoller
Christmas with Elvis and the Royal Philharmonic Orchestra (Deluxe)
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 0xec1f22f3d7268bf7a78e74f75f21c78c2b5f3b4741749005394d61cee9bd027f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USRC11701877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd36037b6df960d93b28b723000f0dda6c96a792f5ec0e81952e841f256bdc5a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBUM71801955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960efd5f0a0a4bb43f906748b5d7e838f2731581c5de666392d93d33c4be753f. 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/GBUM70708253.
Stand by Me (Arr. Z. Reaves for String Quartet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6701ca9e04662e078302da5d99fd0189d8c881b3fbe98b5e0b02a3c53e003ccb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USPMZ1717809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fafc4435bb7988b42ad69bfecb11a613de647f6aa41b062f1e1558573d0bab. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/USAR29500094.
25 or 6 to 4 - New Music for Flexible Instrumentation - Demo Tracks 2015-2016
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572862efbac4c5e99586ecaf57f3a7ee5cc4a4fe5e303343720347ef94a00fe4. 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/NODGN1503170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960efd5f0a0a4bb43f906748b5d7e838f2731581c5de666392d93d33c4be753f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBUM70708253.