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 0xb31e11c28b748fe7f1bbff335ca3ca968d3cfe5be515af4d820315da65dc81d3. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80141b38-d6a0-4eb9-8a58-7cbc5c3d9290.json and https://artists.proofprofile.net/proofs/artist/80141b38-d6a0-4eb9-8a58-7cbc5c3d9290.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 0x991c7a589444ba63d1af11c15854c46ae154399f4aaa6e494d7ad8bf0bd77c6a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DEPI82432600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f755727901474b9151e9bc020eae025e651b2729dec9e72cae21bb4ab8c7d5b. 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/DEPI82430921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11da4945d2291b6d53f7585c2ef2b05c52484143b067783788ffc39671ed10ed. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/DEPI82431114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90c453f5cac5de6efb0590c126cf2f5df7b02bf23aa897d5281ebf4f5e68714. 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/DEPI82431116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bc9788a1ad2209606f35e3b876099d107a9b6fd3c991633ef673011eab637d. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/DEPI82431112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0cbfcc0ddddd70b0d1b0059a9767414f2955f5cd4c633b390eec648707c1f0. 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/DEPI82431115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff59fa771f9a1cd2be0d497a3e869c975828d898b2c7db4cf235892d505f656f. 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/DEPI82431109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c1f080dd1f4178430d243de1778dcaec65555beebca4a5b946a8bfa65a3512. 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/DEPI82431251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5669f77749de3a87be351c23423ac750ceae3f0bc7a0c4a47db038735eb1ae. 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/DEPI82431249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a0b8efd2b9fb3c90f3393c9cec8ab476c8871f9d5778b2b8b4b8e22100c445. 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/DEPI82431252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2444ce0eced2bf5e5b3c3727a2df0ec8eb2692d175e331ca3470496d0f4389f1. 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/DEPI82431254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a9621be1e80f713a87ce3f8776b358fc1d95abd8b67aa7d208f140bc8c9af9. 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/DEPI82431259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441b463f48565d27aedeb1c62fc34bb8748f71711b0c42f94db3676e893280ab. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/DEPI82431255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162fbdbb43bae6f779771856c77007558952dc2138d933f0d2e92a7357acbdbf. 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/DEPI82431256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e1a7ee9d9170d148fa067062ce84c2e187798ca850050f7f19549407e0af13. 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/DEPI82431260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7613c7f8d59c7806bd4498f9f8403d00b2ffd07ed5598bf394acfd09612c93d7. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/DEPI82431257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be8238f30c50e4f32e8a6080f5456f93dc86c33abfc033b08a6615a679fd7eb. 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/DEPI82431733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9135f39d6162d095dbf9a9a73e40cb3bafa719b6f6e7689fc4314c7f6662d709. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEPI82431728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231d4a6f3521059d0112902816047c861561a6a16820560b6f9e856b029c584c. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DEPI82431732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d0b21420df1c1fcb305db05e812b36275a2519d2291792220255b728683e02. 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/DEPI82431729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbeabe71a1b9ed60f286bd4d14b73126302be03bee5fabacebf2943ca8349f3. 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/DEPI82431731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6a46f40137d03b40917ae7d25982595da0f93d3b0a32063d920820858d4fb1. 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/DEPI82431870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a0e90fccf54e6e8a1217ff84d2ff7aa86a4612bf4ec3d4f5f7c96ac1dab3d4. 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/DEPI82431863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eac26fb50c82fb358b893d889d373cecbe9d548262c76eaf39894b31476955d. 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/DEPI82431866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ae505ff1a57d0700347af9479cff13a53d0a18279344eca3a1b8252c10be86. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEPI82431867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d0031718da437f3994ad364afc557aa79bf5616ca0c3508a97fec7d2eef3a7. 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/DEPI82431865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a43eb862b0ced2c25002150ab8b3d21fc01abcea43fa547e306215161b6f18. 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/DEPI82432026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d549f3a659dba752638df542aff0ba5097382b0b6433dda801cf08b83e3676. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:59:45Z), 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/DEPI82432027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de27b0775e77c19c16dbcc88952ae36b1d08f14141d0ab1abb7e1df16c90d6f. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/DEPI82432031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec50cbb87df04ed6dd604a420a69f2fdcfd68fc8c393f1b7e65dcab65eed6b1. 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/DEPI82432030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec596ff44d7dbf4eb30f4ac925a46876173bf9c2729e3fba0e754c4bff40ea1. 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/DEPI82432046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685fc0d8d0089160acf57f64abbf8f34c92d69bb2a9290f663f8315b54e035d4. 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/DEPI82432410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf285b31be777e97f8db744824cf09b4a5e7d0c0ce0ca3c793aed800720f7ee24. 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/DEPI82432403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5e10368a4a0677ac45320b1e296f61c887a796e873e14f774c0b7e87bdac92. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/DEPI82431893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7eb8aca2eacbb0559d2a249fc7b9ebb89f9e57a7e452c119b8e13e1053d641. 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/DEPI82431890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32323f6e71ace8b0631e21f30bb88d22ccb10505da767f63cb954eb741a502d7. 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/DEPI82432406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd11b48d64f462a709c63043c6916b8509b1d0398a315aa6dc05ad55aa83f7c9. 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/DEPI82432413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ccd36d5ef7dcd8e940889a4de8374c94159e62da9b814b3a3934328df77506. 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/DEPI82434704.
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