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 0x480e65944e1e7ed127159fb9cbdc566ccc2088346cb947fb725978f7de939658. 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/af897975-b985-42eb-bad6-54da5c3f9098.json and https://artists.proofprofile.net/proofs/artist/af897975-b985-42eb-bad6-54da5c3f9098.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 0x2ad2bb0b9afec9448ba84216f80b3b550a966a1fa08976f07ced70a53f7c8c8b. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GBMKA1180020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f77fa0999afbad9f5a1ef6021f84f4df69c24ae2320adb663e95de2d2b078e2. 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/GB2LD0900902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d9c919d2a0f1ede78ad357b3b97e5cd3785467d61b05bf97d189807741d4e6. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GB2LD0900978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b567e83383cc360ef73738421a0a1bfd86e9db7e88c5432d44357854bbcd0ff. 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/GB2LD0901068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c4033f24a512e228ec791940b5b97ca90f560bacb206c06a857fe8c5a7189b. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:33:31Z), 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/GB2LD0901230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad1515559cd2bc7c817fa01433449d863fee2ca72828efe676dc2d31ae8b0d5. 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/GB2LD0901713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6621da01aca447007eeef40794ffd40a8ae4bd1d26e8ca810f3d5f5e97a0915d. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/GB2LD0901907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad60997aadebde0b7b373b86d9212b68ad1ae9c6ca5aba913f734c51af4f408. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/GB2LD0901645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69965c871c4cf56113de86bffb2d3025dd253dd605f216e0c3c1e9ffe77d6f8a. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/GB2LD0901911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16e57afbcf0854b00143aab6f2c511bec8d13d36e9d384802aca68467b0c023. 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/GB2LD0901731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6481ac68da5c5fd55ad8f54ca20ea64198f860508bc7a3c70de3c7effc4e3c47. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GB7YL1608401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8783a7701611e28ed1d3657890cade3c375ad6b260729a6b699e97c11e15a426. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/GB7YL1608403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd49e819f426460a2ad29f070d47131e8fe26ff86481f51d1b06660b7ad28ec7. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:47:56Z), 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/GB2LD1800901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a5c6ce5e20f2ed25967967f008878c6561c87379a55667c97d10a8ec5740b5. 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/GB7YL1910022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a56a56b0afb93ea716fc049d8d82628d6e099f974fb5250ba069489591239b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CA6D21900123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a32e5667b16b7f9aaeadb28646de64176b99d70c6ad0a1cbfca5463ffe4183. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/CA6D21900069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf5272579f160efafbabb25bae01221798ff7eec99e052807d7fb8b42e59ba2. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/CA6D21900124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3817499191cf898fdc14e5a587ef3b0be94bf8e1c0b28ad843692d137e2a79e. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/CA6D21900125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41efef5d1a660ed64409401445965ef54d7e869a0811ea9a4cb1fcd9e562714c. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/CA6D21900126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30316428dcb24f4941a372c1356e0dbd61b6d9c9089cf393f2bdcb54ec2aca47. 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/CA6D21900127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd2ab52b97a36f2a5606465fa86f3ec64e94f9e87cbefde09bb42894c0ed568. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/CA6D21900128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f714cdcf06125dc2a4fef62206812e678f580f3ca0b4213f5434c62def9cc6. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/CA6D21900132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647cbfeb36fa63e592a58fcd864542094707041fe83788a3756e11e272fad6cc. 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/GB2LD0902343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d8a0c856da7fedb0150d09c05a4f2ddf4ffea3301d94e91e5087f4d3461d0f. 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/GBTDG1200475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe37f86659254a8ef346c0900c0036cd290e851cd2e4ed7be248fa26a1c55555. 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/CA6D21900073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f1e0e979fee7c0aa496f64c4bc1da8463858ae91b9386e1b17a996c6a84e4a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA6D21900307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe37f86659254a8ef346c0900c0036cd290e851cd2e4ed7be248fa26a1c55555. 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/CA6D21900073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a32e5667b16b7f9aaeadb28646de64176b99d70c6ad0a1cbfca5463ffe4183. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CA6D21900069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275519d7a22d3665bbf93a464503c12266f5f04c791b068eaa719cae219b40b2. 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/GB7P71700060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7900cb36f5791334e01db9a78507c5ed431e0e3df45ba4838e1cc341052cc874. 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/GBAAA1100254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332df5740fabdd64a33f638535a6f1ce46c1aca1e6404de7aaf2a5cc57c92114. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GB7YL1710010.