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 0x7e176df99ca48dc5b0ef7df9b4c1914a45848a2d4994afcdd9401ef60e1f82d7. 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/8ae7d9cc-2016-4ea8-af2a-b13674db082c.json and https://artists.proofprofile.net/proofs/artist/8ae7d9cc-2016-4ea8-af2a-b13674db082c.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 0xe54ab696966673f572d5aa4a81d635df218507ccc8b355692ecaadf945623f99. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USDHM2117596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bfc5c98bdaa9099b4c53fdf34ea9452e7290f145cb097dc3c5a30f0bed89ef. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USDHM2117597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4867b1f431db34536c8367e59493912cc637d5d9c8a174942ae33dbb069e4d4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USDHM2117598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493b8a3d6939217635bd46a0292a5fdf6837131866f61530f3b356c22ca713b6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USDHM2117599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f52039cedb107ec5b044f1356e1bca872da3e90534262b7ef26475457be2da2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USDHM2117600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1569c1cd1f627cef16e24407e42947c02c77b7e8f0df5cafc9af9e2282305460. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USDHM2117601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe128f8f191af1954c5778e5af26de740b2b87a636d8005224c4450a75c50908c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USDHM2117602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b3cbed0be28b75cdba52e50c9858758e78875a8425e7cbb0c0388989c229b0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USDHM2117603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d94b3860f34f5f41bc90fc0173e8318211652105ccc0393afbfb03145f1cb1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USDHM2117604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ac49d9b3e4aba47c969850603ecec01c2ee88fa5427c21877b14346465e333. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USDHM2117605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c59006ebd7ec03e785315ccb302e83dec073ffd3fbcb95fa64fb3a0e6bc3ba0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USDHM2307406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b01d8c836087062664de96616f9c6bec8170ee3e6fbc2dfa87f99ba8166db1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USDHM2307407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f01bb498ed3fa16708fb733c2cedb98b2a72c98107178818f0e1d8eba17cdf1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USDHM2307476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173cd7db6e244e816cf10226ee7b82b2d28870f69e70f9e8fb4dffde4bb377f4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USDHM2307477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd02675d212746fa31227a6ceff3e7667610debf077e106bbb6680ff2019013. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USDHM2307478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a3c9a2cc74b7906d0da30794720b3e85c502d8f0f4b45a8cbd87f55169cd00. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USDHM2307479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb46d7013b21a1474942325289ddbf52498aed36a0a5d7226ebe5de2d5b086b3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USDHM2307480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f967a2b23763e0c5510ee66d5fc3e9bc5c06be55850e010d842a1a7a6eeb6a2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USDHM2307481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fcc67137047174471b2010f02a0bfe8f918529d7f778111adc619412c9489f. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USDHM2307482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494ca68e9e0516d05af9edc1f308fb919ddbf47372a6047f00c8474a23635dc7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USDHM2307483.