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 0xaef8008dde0c32fd49199704a2affb1c0a20ae9d0d441b0f220114a530b0826f. 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/dd4ced43-4516-4c5d-941d-f9c4d711e2a9.json and https://artists.proofprofile.net/proofs/artist/dd4ced43-4516-4c5d-941d-f9c4d711e2a9.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 0xe6fae0a0360d7c13e895ca4c1e83148782200fbe2ed8aefd9c8cb1157ca17510. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZPLS2124606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaaddd5c90e23292de82b914e3309e1eaf15afeb2f3682078cdeb53d168cbe9e. 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/QZPLS2124608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6353da1e8317af8dab7abd8517ab0a845cd2e2ebdc1042b561577085d7783da0. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:28:45Z), 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/QZPLS2123285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a488dce70a0f9164e55b2c2946a733c4288cd3e6ccc0501c098c00d0107e9d. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:40:34Z), 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/QZPLS2128596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b825fff385006f71933d075e653634ee7e8ba62ce6149db7c00282ce082fd2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZPLS2128601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d43fecc1ef95c207efd05f862e2cc69d3c6b24084daee1c025de3f3d3c23e6. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/QZPLS2126538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f46b6335b23c2acc81ce0680f0b339028cb3771e8adb99687f7637fc87580d. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/QZPLS2126545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5899256d4164fe2fc394b8ba9dacd5dfa6c53f75e9600213d2c91356170b2d46. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:10:46Z), 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/QZPLS2126546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d72d8a2e970b984030083ec773c6ca713512004c333cb91de801c49704e78b. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T14:43:52Z), 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/QZPLS2126553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4a5f127328cd56f8c71045daf590fcec7dcb5de4470ea0cae46398785a5834. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:57:12Z), 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/QZPLS2182066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27f2cf4d40a1abf7f89851696693e6f1860069b128d1fe5a6ef0bc58e1be38d. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:19:35Z), 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/QZPLS2182068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2baab6b3be0ce8c940be86de661b04d6f88bef50eff645ceaad97b2fab32d10b. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T06:38:22Z), 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/QZPLS2182074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499eb07286cbd8d6f40b490634d7b90d6bacd22c3a1779f93be333f111b4625b. 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/QZPLS2182075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9327dbc5c9ddb6a482e3285982c1d3aae79edc62e7cfbebb63fae5041bae7fa0. 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/QZPLS2193788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7080b3634fb213ddbcb3e474a85855138ac3afc8a7186c4c1536f51323dddb2c. 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/QZPLS2193791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856ea7c3cf7ce63c88ed867f60184b95fd4cd75c1fe2cb3b706e4597884377ef. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZPLS2193792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6dc7113f060b4c26a1bd9b5e1d600a02b95bd5781e82fe49ca8f7355afb8663. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZPLS2193794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8fbbe52fe4acc272133783ccce2b0bfdc8ed21feda612a833986a60b682f12. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T08:41:39Z), 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/QZPLS2193798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ae8d1300ae8342964ae6d67b30915eff5d48fb5ac9748d9133df0466dce2d0. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:47:39Z), 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/QZPLS2191002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68de63c89c024589db250c6da5b460328df6803dfe270b918433ed81d09f01b6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:46:46Z), 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/QZPLS2191006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d3b5d9be9dcbb777fb5ebef72e94fb000cea0e5c8a36b90deeecc8271b19b5. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZPLS2191010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d9e98147675cd6e66a5b047fa2d3dcc4530dd60f998ec21e9ed0aa5d430412. 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/QZPLS2191011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce10c99c79a23ec152b895b8a755e0db32a2ce721fd16922269f89b1eadfcc7. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:51:30Z), 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/QZRP42108684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715c513be6c00b72106587c7160f8dda4894a711c4af84e5937113ee1973e0a8. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZRP42108685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3c5fca23f9139250ce515e532fac6c130fa712da24c03d6a270dfc6fa84dca. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZRP42108688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e280b3fedfbd072002e6e252ed949ef2e9498996e68d364630a0b4c49cdd30b. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZRP42108692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca54aab101ef2ca20bf5aeae8135be32aaff192faf3ce43a7bc2d89b177c7abb. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZRP42108694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61dd4ee43f72eb0875ec65508eca35e177a1fc35382e3db191b06dc81b689264. 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/QZPLS2107207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080c9f7a29ae0613f77f8767623263d5a8585d93f672d88ffa67e24c321cfc96. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:00:24Z), 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/QZPLS2107209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7435e794a4e4fa19f76dcb4ca30bcf30b26cbd7a6253b410a069e505d59b6cb. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:01:47Z), 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/QZPLS2107210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa788c72ca6ef9fa839a53777570ff9d7baee8830840b24b39e1112806b1edf54. 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/QZRP42110529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3572ce52d96a59ebd6a0fee816f897a2ab86ded43a80d5987c9e2d0c3a7e3749. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZRP42110535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4c88e2327ff09d045d738d2f77b3fd35fd3f3b3db7ff740da500b1514d9c33. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:10:13Z), 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/QZRP42110553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d99d1b9c9b86b3ef9090916ef9e7ae43fec0003600b7dabd281283a968f4dc. 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/QZTB42233829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd361f610eda178f3a65da630a781ed883c083d37bbc109cf1bf6c7216e1881e0. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZTB42233832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58caef857d9498a5560991240dc58a391edb5a77174f766937509168b7fd779f. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZTB42233833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f9f2c92928ff8f954a57f4ad460a5e4ec28d8606e70c6dd69a78b6496345ed. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZTB42233835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29423734b9e68707afd9f768ee0f95608e46b36276e116993431e837401f2bd5. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:40:52Z), 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/USCGJ2481225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01541376308eb822d2f5ca3e098e0d0c18fe088c2e30d722900955c3c602cfbb. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:55:03Z), 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/USCGJ2481226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82cc1aa5ff2be4b8dc4627806afafab56e8b124787e82a07feb6e31828b3fae5. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:06:02Z), 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/USCGJ2481227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b8eb8196a23fd71827dd0d3b3d8724846dd0228954364b352797196b921056. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:11:13Z), 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/USCGJ2481230.