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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62dd92f2983d7335643276b87a9a575c2e557170d9b97f6731fa6cc08e1eea3. 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/2c7a3c84-56fa-4dfa-ae7f-61e1d1e67ae6.json and https://artists.proofprofile.net/proofs/artist/2c7a3c84-56fa-4dfa-ae7f-61e1d1e67ae6.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc29189defae4d2c142edc1850a2438cf29827067595dd788f2bf0341276fc2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CZA232300634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401c202b396315bcf4b8ecfc49d66784fd82cd08a04b7c6dd9df87263f6034fd. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/CZA232300635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12eaf03a93bbfcffcf41c4a7e3ed448d0e3d581b45c30ce85e1b864e0b0e5dd3. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/CZA232300636.
Lord (feat. Eremen, MC Gey, 3CK, Hey Emil)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b6696f99aef50df68eb31d32320262dc64c5b52e8e9ffecbe24853dd8b0400. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USCGH1544707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf718f7247a80d2eccbeef4f17adebdfa79077a361288a4de8c990662b1e9258b. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USCGH1544712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e865cb6b8411a7f35957cf7e5e40b55ccd90464aea18317bf78089149825451. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCGH1544715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc793aa20d4d82dec481e90e8c232a2034da64e217599287f7eaf4acc1bc6b98b. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/FR96X1886125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150053e0e74e5504747e817976206b9e169e440f588b90e7a08d3ad6aecf2aec. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/FR96X1886126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6553305b2b900f59e10e26505b74ded8d6e7e69969ab58fa5d2134282194d7f4. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FR96X1886127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2366522ac0b36c7b02ab085300a61c74627bb47b4bdad386216bfff81a652fa. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/FR96X1886128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc881cc4ab2b8b920d198e97c03d60a25cb46a9b49267496bce8794e787fe4eb8. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/FR96X1886129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d281a310646855c65e74244a930d701d98da4444e91af6cdc5b99792d0f660. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR96X1886130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ccd89e31fcdd60a6cb69a250b949ff57e2e3a1c862e61157437d04d7a923b00. 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/FR96X1886132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6906942ed48612677265462b25ce74928e2927730cd78fb53012a1958ff38805. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FR96X1886133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c707d2a3def96cf775edd60c90c9fbb5d6487f10ad897eb7a5ed7a673a2739. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FR96X1886134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61917d4864cfcf5645ff3bdc13a53201861287d8c6177c3be58e2becba90424. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FR96X1886135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa162adea360bbab28de3efb3c2584c5518172380ba759bbb5421f7663d398311. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/CZA232100084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d83089a369fd16c353d5b6a4f60cb318132bb8f5e595d5b78024367844b808. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/CZA232100303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f36ca84487693f905e1302049494055debf9b92c9bbff3dcbe0e5fd26b681c. 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/CZA232301514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2589c5f05bf3dc5fdf54b95b7bcfbd79e20e60a45a1c391e4c9bbdc8696ac6. 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/CZA232400448.
Damu Players (feat. Prezident Lourajder)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bee211296f951d9d683dd7cbb11dd535f1259f17b96644ea8116f883de0495. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/CZA232001259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c94006b2a7b9c3db6c66a3d4f4296d0157d418e4abb8b0c0403cd1c63b55be. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CZA232100550.