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 0x3dbfdaa87aa7ecc20d5f013b05919b58dedb7a408f9e7581edaf3a8d70aeba82. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1e7919fa-7822-4aed-81a8-56a0e38cb3b8.json and https://artists.proofprofile.net/proofs/artist/1e7919fa-7822-4aed-81a8-56a0e38cb3b8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nu Al Miljonair (Akoestisch) [feat. Paul Sinha]
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 0x50ff127dd7ab5b244578b552b6eddde45d0cabeef000aebd52e9f0a889c01aa3. 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/TCADM1815453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc168d3f7d2d7748d0226bde19ce0f0be3d7936855b2a444b6939f4089e70a0a4. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/NLX2L1900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16f69384a271b21a626278909e0802603238a1bce3fe5c16a9df49ed14bd18c. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/NLX2L1900136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387671966180967ed9aa4ed3b1f5febf811f021476123cc7e6cd65d9ef200e9c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLX2L1900137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dde6c7fc81b518815e8450add88c8fb65fea3ecb66a7a2115206d5c2a20fd3c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLX2L2000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9cca856acde5a010263004ec457cf97b6a02b70977bf85a7890f6fbb49c851. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:26:02Z), 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/NLX2L2200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d684865c12bcdde61bdb2f497763f9a9eed6b2fe2f5375131ce7ff366053ad. 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/NLX2L1900081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b89b721e7deeea2e396a46d56f2721f724caecfcaab10077e0233c9e70d25ea. 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/NLX2L2100013.