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 0x0a941ed799c5fe0004cb0676997e71474f424d281780e19930729b0e800a3e3f. 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/9a665526-4347-432d-9a6e-bccb30822445.json and https://artists.proofprofile.net/proofs/artist/9a665526-4347-432d-9a6e-bccb30822445.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 0x439741ddc1e1f583fa691d1c3de55319e701b8becaf7c4a6b901d494407afc79. 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/FRX202400265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3db439afe94b2802e26482a297bb807cba1a9ead338c1515c2254f6a2d09d0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRX202451854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641517c14b3d07d649843efd4b265681fcc2d262402f9dc3c822c03993c83b54. Chain 2 (Bitcoin): anchored in block 957711 (2026-07-12T13:56:57Z), 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/FRX282414959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f75ed4377b8d276547918d1d922c9ff893b76c83f2fb697a8721204b3332f7a. 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/DGA052494443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf82bd313ee9cea53edb76796f1d02179fc362a074bb3ed54c57c73c9f97d7b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DGA0R2467976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0496f5c99905e9e1e338220438a302135055be36f647b07cd1a4e8577ebb7038. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:03:56Z), 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/DGA0S2453514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80e0807e33a8657eba584265e509bcbd1225374dd8327e80a399e8957056fb6. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/FR2X42523895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3feb4cffbaa02c9e19c447b6a8a37ba88eb7f1bd4b0a13fcd8ce74158d7356. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:30:31Z), 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/FR2X42528415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ec7f8af22f3b5e38a29a6aba75397c9c03d30d957eef2741e9a4fdf655bf85. 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/FR59R2563679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf6682a3f743215ff607075443796d45b64e7c9594b6ed027087b3ad28e9b4e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR96X2518420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02f9407c552eaf402df02b137a986837199f0ef3471efe5dabc92a42a909f19. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/FRX452548985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae4a6065849ebf44171f470dfa1e1c01539b81aa8243d873b13f4da790f043a. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:43:00Z), 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/DGA062576433.