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 0xb8c7a557ebf96a4dd93e794d593914414d22327782ca434c358fa3b69b3bdb33. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6da4cf5-f625-4e2e-bd6f-ecc0fcd4f12e.json and https://artists.proofprofile.net/proofs/artist/b6da4cf5-f625-4e2e-bd6f-ecc0fcd4f12e.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 0xa7eee9cd8d52e0e188d3adba1704e2b9e4ce4eacdd74a77ae1ee60050aa42d1d. 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/QZ5AB2357225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64537efd7e50f824ed63f85114ee3d0e0715678f4a2f55ae054c83e14afbca0c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZ5AB2357226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28233dcc554fcb385a24c599d3096546f67a5ac437336d90daf2a6f0650e5bf4. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZ5AB2357229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd93131a1d1aaadb36c0c950cdd9884f397f35314cfadf8cfc9fae5dc2c64ac. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZ5AB2357230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2618792897d1c157076c4c14c645132c7c2d659da0e94069e6761b4a116da3d4. 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/QZ5AB2357231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6eea96b4344abcf653b527fdcc7d0e54d5d9bf2984f53a3890a2d20ff23e79b. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:51:54Z), 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/QZ5AB2357232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337b55a4904dea3749a4706ab96850cd8bfd93774b407867577015e49e1864dd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZ5AB2357235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290c9151c2906eec96cde25dd01fde332f877f0dbb619f9b0e6758656ce7e67f. 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/QZNW72333596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b26cff975221c349125bb1548de9433e7f3536d3ac77c35bb4417622bbbf525. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNW72333597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326b4db9ab3a1585c9bfef4b1b709848e801f5f872533a67867375f90527cf7a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZGLM2313644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6b1d7a4df766ca127671915448ebfd1b885ee0516f7a57f7f3ffcc4ad289f8. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:46Z), 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/QZGLM2313645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8440ec031f32802b9ddf09c9a1bf076a3bacd3055644de002649debbc1a864a1. 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/QZGLM2313646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56118648963e2f9352e3b4a14d08a8c53fd29a4d1961fae24c5f853f94fdc802. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZGLM2313648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397dcf91c23ebd260d442b084aad1e5e1d387dcdc3038a321b01174709fe7522. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZGLM2313649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704ac9e0d0c373b5f2d4632ebdc338a215fe65cf07d998b15362b9715fd6ae5a. 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/QZGLM2313650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85522e88ecaf947b7bc42d82b94f23d652238d78cf9b02a8ce04a96ab31876d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZGLM2313652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660e133fa20e4af57e0ec832418ae85b9f5d98ab72c27c2bcd6f44af2cd2e41d. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZGLM2313653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372a00a4c70abd9fe4731aef4c334038065f1ce2fb58c8f3f624a8bac48e7afa. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZGLM2313654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197ff9ef6b0354ec07d735e0121def39911000ec3ea9c2d83e6b49caf211ffce. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZGLM2313655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00fbe78a90e6d0ae58922f108a43430c21679aeaff4479e5e650d3f06ba3029. 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/QZGLM2313656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfe55f39f5bd7057a311bc047f4f6226f2c09fa4353eff93db61cd7ab1de64d. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZ5AB2399611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d19b5d5bf6ee9cef78464072673c03317695854005e4ed089bb12c557b539be. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:17:57Z), 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/QZ5AB2399612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed25b677f617ec06a313395603e62fdfcf357fa5b7d3e563e7116769b2f4fdad. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZ5AB2399613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372284575fa5ca71cfc550da0216740a61e075d4072d8238a413bfd9dc5a79fd. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZ5AB2399614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b381ed19d2fe85a95435795be80a6176f3a094acc673b324c8f896e2210ec0. 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/QZ5AB2399617.