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 0xbd81bbf53ab9c612d47aec07fbd0accf0979b7160b139088c053d63d9b46826a. 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/5b15b311-40d3-4620-95b8-643b9a304e7f.json and https://artists.proofprofile.net/proofs/artist/5b15b311-40d3-4620-95b8-643b9a304e7f.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 0x844b71994663e3adae95d7af58213ebbbdb0dfca1ce17b20a3e17519a1d313f7. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:24:23Z), 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/NL1LE2000837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8936b94efeb123ff25997f19e9e95c1135d2cdfd1ee067c15d1da02c0a7660d4. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZES82071152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b621e67cf97e3ef51385cb31d50a761a19ad58dd50265dcbe366c0cab272b15. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/FR9Z62000322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da2cbbcfbf3a4981a1bc01923276a658f9a954af0f7bf6ec75532632bbe9b9a. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:52:53Z), 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/NL1LE2001233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aeb697dec537194c58f45a2bc03907eefca52789bbe6126ea20299828ffbbb6. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/NL1LE2001234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4950854301f01198841c940ac762da45383ea24ef665d6f66e8b576f6974f5. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/NL1LE2001235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9e1b2ccdbbeda962f26c74fad0cf4e2840fb054f840341090d1174a954cf0a. 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/NL1LE2001236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74b0a787a6c95db55b676f81923363404fe9613f84ec5bbf3f6a2a2c95be568. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/NL1LE2001237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d67e1d8afd44c7a44d6f417fe54c5c04bc8368e1f50da440744e9b8d72ac385. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NL1LE2001239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727b1db653a0edaf578ea0fb5ada9c61be26ff1c89f8ccfd68ce75e1abd34268. 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/NL1LE2001240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43742d57deaeb3c089b8f0d51763d0abe30c0b32bbaec84e1ade0ab168766217. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/NL1LE2001241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0de6df638790fd73bf9b086419abaabd12b061b8ea3e5f7a2f95562747ddb2. 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/TCAFA2078237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d9f90eff79be16baa78fbd24f7386efc25cc074490a867e2871ed79d2759bf. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZMEP2083682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc724514ba4837a4f72c35a0a42bfe7bdab684e9e67f102587513daeff587ffaf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKQU2137120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ac615542489d46f8eb69af6ddd9e9f97fadaf4a7a2b9b287c6126d83aa0822. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKQU2137121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e929171841464a908dde2cf01c58b8696af3f735062443522f249b0ce393c9. 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/GBKQU2137122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9397a5efa5af9eda608e664f6085e0f01497984d7c3f378d7a1e365934404f65. 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/GBKQU2137123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3f31d5d8307c6cb648d2474319ef3a7ff8cf4d8d06b2659d8aac472c5890e8. 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/GBKQU2137124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbf240bc2edc4df56711aa52628a6b85ae4cff677db8e7e0c96ee655a722e63. 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/GBKQU2137125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2feefc7b075527adb3424966086a6dc633af80a40dc031f5c2c87e8f0ea8f9d0. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBKQU2137126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5daf623dd8c3d465264a65a049daf6725d3973e5db39b6e15badd35200584c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU2137127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98eab45170801da1f83e39941c72f612dad672837470859057136c9044d6b79. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/US3DF2505550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7c7bccc767c99113a2192e6804fa5cf2d2b20dc154b1a1474811bcd9384ccf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKQU2199397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b84fd89139c794d8ac3ad3513d38147691d904dd1c74e534c02634ac3c15232. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBLV62023518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1626367bd590b92a56cc5aeec4a83d8e043455d9f27e12c64c8647b8a071d608. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNWS2015164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74353dbc4edfb44d79890d6ea5af3325267eb2bb18c0e2801b35abc87c6a424. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NL4YD2200240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7395fa70aebd2bc06eb49a8046c1f18b9f323d49db111d2a0d7ee64aa2b2561d. 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/GBLV62136429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5a5f0965585307cabf287f962e27ee5d7ec5df484dec277c3d3d7b6608adaf. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU2111745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2c430a83ca13dfe29c24f42400d24253607d1b351edff2b1d4c08a73a0a2d6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAEU2087063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba0a472dd088eb4cddad239336753d64ec407f16045315216c5e5a43504a4b1. 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/TCAEZ2059174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1891af63a6a7110d1617f9a5daf287b5df3ea7e1855f3bc878931b416fa67f26. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKQU2122009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b069a462eb6ba49048902ebbc5f2dc1d24440e3d46d77f37eb9e1701c7e16c7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBKQU2122014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0e0bddfe536f03cb2ec5c55bb114f08af74cb0676a648fa9f4d3377ec23da0. 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/GBKQU2142819.