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 0x64a8c7f508555a20143a09648320b3a2b34f854bb6727ea58e32c05d10f83df6. 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/3fbd6820-99cd-4f7d-9bd9-13ac0678e783.json and https://artists.proofprofile.net/proofs/artist/3fbd6820-99cd-4f7d-9bd9-13ac0678e783.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 0xe1f928086c1479e61f3c843db3f3f8a768f8837b2d3980bececfcfe6a2b54f6f. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:59:43Z), 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/QMBZ92119079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c2ba042cb0399941bbd92a7e0ee8d13ac6ce2862573fdcc29d75521446ead1. 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/QMFME2149031.
Lastime Tu Corazón Dios, Hoy Suplico Tu Perdón
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5df57150d0a2c66033d081e5dbc2db083666ff051d50b799db8e0844e929d1b. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:31:26Z), 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/QM6P42215290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a6a590ef1c6c3bff0770345bef7ed7094b47b7f5c81b0776dd719a76ed3bf3. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QM6P42215294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfdd566b68776b503638c860b2f66b4e83752602b1bdacec7e427161c5194fd. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:03:22Z), 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/QM6P42215295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61410cfb7ef3e2dfd3f106deb1197dabff032f9de4f17e7b8f1eb223912e754. 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/QM6P42215296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7605f35d450999592bd2bd53c54e111557c67e39f7bf1e3ace71fe8552016a. 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/QM6P42215297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc143b1c41b7732d35ec82850c23a2a8fb6dbc27bd224f3e2d26c16080249136. 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/QM6P42215299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca7e7c7de4b75de929168c148bdcf46da7915631c70632ed4731573295c723b. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QM6P42215300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb43aa075f3505702856649c55a7bae35da559bd464f37392ee9bfca0be79da1. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QMBZ92292424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62974ebb644621b98bce6fb6d6ee7fa9427c77558b2ca3c75f6e33e6153a7e5f. 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/QMFME2238753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3b05295eb4a14c1ec4f56b13f18d127b071d582003a514386490cc24c23ca8. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QM6N22309375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed99ffb81d16ed827be1a3a186e0e4f5e3e9f8a8c7ed3e3dfe4867fd468970be. 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/QM6N22309378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967b7419a96a551c5456861d88de0d7af113ae62f76ed02b568d79ef6dda3b91. 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/QM6P42305842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4577829d444356a1c13a9b907dad95bb1ff1ce1178238c0d591ed097566bd6ec. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QM6P42305868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460139c67e0142572f61600094cfbddc07db82038dd1b30028047dd0af010788. 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/QM7282387023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9740865672f0e6be805d6ff895feda7877bda1d74b360787652788ecf0d4053. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:48:50Z), 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/QMBZ92344556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19911e291342c2c8a75f772937293ff1951de09ea3978c030e8f0d3ebb7f853. 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/QMDA62371960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc7bb2f5900918cad948504d1eac679dc2e7713ca91bb1c5addc0b5148c0015. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QMFME2365460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27f431284652e2cac813729ccdf6b8e5aa6c64f95ec239c877e292f4c7634da. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:39:42Z), 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/QMFME2365568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754f331fd364ee130ba906f0b3ea876af32f4b8bbaecc1163e8c851666b6b099. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QMFMG2352566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014c1303bd3fb5b3f7c3b701730fcc0b5e8676e1a09c8ae3f4a9eaa7d80a36c9. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:59:34Z), 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/QMFMG2352780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7219cbc221bdb83a91d54aae2d0361e123151c74acb2d2298ae08bc00079a6. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QMFMG2352773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bc024e564f0cb42b97ab40647d0be5b68b91e3a5715ca605da748ac60ca4d9. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QMFMG2352823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a8cd3aef43754d8fc02433d8e519dcc5e613503cd3828a57b6e1a56acd5edb. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QMFMG2352806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af36500ad6ba340d6810bb465fdfce131066595e19087676ee259ba8f1764ab. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QM4TW2475228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf707395d85d82914b5be4b0efc560fdc5579d4aba27fa69e9e7d86f4ff21aa9c. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QM6MZ2489114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880443fa19c55174fcbe2b2a04d0056880f6c6066c10be4abe3e922f003df366. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM7282418493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f759deccf9c213a553fcdfd03862e1496504e7ac0bea30c0ec6a2679166415. 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/QMBZ92463759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1a560c3b5445b29f8b9bb6a266c4c835d858734fda970b127873099cdf0a74. 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/QM4TW2507108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4aec4515f0bf23237f2a00da70f3228b9bc8f15b0b362e5123307369ecd753. 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/QM4TW2507120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb4525dd044b87563f107d9c56b30dd5bc81abb54969b75a8b6bd1e3732a9e4. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QM4TX2508564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414d2471feac76587f4d71bff275dbfc9752635cef2818dd24f8d56302ab55ad. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QM4TX2508557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed22a73bb6c98489891cc710fc6998f37b2363951bf5d8fa2a7a7af8ab4d189. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QMBZ92529786.