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 0xc04e4f452ff0d26b158abe36b4c84cf05ef766e005be675943f7874ba4b97548. 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/70c3a137-780e-452e-bdb6-44a2f8635d62.json and https://artists.proofprofile.net/proofs/artist/70c3a137-780e-452e-bdb6-44a2f8635d62.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 0x06c32b7d0be952e201f61a74ca80e28456d5eb4eca048f77af718ca9996335a6. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEYW82305040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80351ca0ded186208dd0d09a3ff6439132533e1a2cae7de7a2894653572b15b8. 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/DEYW82308038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80522dee07690dbf07a316f1008615995d46457941a2005af78af7448c80f287. 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/DEYW82404167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc966179150d09366a4b1ce414630a8a8f98215c56b43342ac395cbc68d30f8. 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/SE6HN2476371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198dc23188e6be6667ca319d22fb35c53b8ba90f2298a23746a41d59dbea5327. 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/SE6I32423761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d05290c0e08e760122291b48ad8d9e49d6b531f044cc7564fa440bac45c8e8. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/SE6I32465364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ffac0af67623f613eae0cb16a4a4b7f49333aebd086a22a1cc09628e6004efa. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SE6QE2456458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36ed64cc9d7fe7c1ead92b5dc6ed2b703d13741a197a629495087fe3ad16760. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/SE6XW2402984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a19b9efb7a08d3a4760ef24a5a0b671dd3d8b6b9d490781cf2718e05860105f. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/QZES82587572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce3b8c7c392d7cb00053702280ea67e88e4658f66fccd328d5fda0546b447bd. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZK6H2505957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9b5da0c5097c852ed70a020ceecc5a299713931c449b6301126f142834c950. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZK6H2505959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a19b9efb7a08d3a4760ef24a5a0b671dd3d8b6b9d490781cf2718e05860105f. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:38:13Z), 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/QZES82587572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb598631964d1ed7d4ae774b3c96e55662b095dc873b5445c22e76c6a3816ff. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:25:44Z), 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/QZK6H2505960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8aaaeb685d2f110f38eb3896ca5353ab85a7243099c4bfbffd82d383347a98. 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/SE6SA2435712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc966179150d09366a4b1ce414630a8a8f98215c56b43342ac395cbc68d30f8. 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/SE6HN2476371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab91ef0e6b052f59f8570638ea3094185367412ebc98ee321914aea5cc23ddd. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:45:37Z), 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/SE6QE2457337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99631c88452182f3db38a397f5954a1831655783da20fb236f4652d1d4c3c46. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZK6H2505961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ddb7a5b460477949b657976c8fa6e212b3efdca90254bf02d2315e9ffadd3c. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:56:40Z), 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/QZK6H2505962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1208826e9851373041396cd1e957e39ed0c4ced4e12ce33e6f5e6b966dd8cef. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZK6H2505963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd77a1bb473c0a5f19d64652f2836641f2c165e8e467c07807367dc9fbc5533. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZTAZ2597888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61afa10486e80c7246d84ab3a9ca7b155edbec5c3ea0eab30edf276faf13f078. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZZ7R2543458.