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 0x5fd37cc41079cd3144f1a941c39d04d0652d77a81e7813059254fe7b9f9ce11c. 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/5fc44f49-f754-4fa7-a711-bd7c90166d1c.json and https://artists.proofprofile.net/proofs/artist/5fc44f49-f754-4fa7-a711-bd7c90166d1c.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 0x250192e3065030398394ca9627b9a38c5321199d3ab60f13dfbf1afa2d014a28. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T08:34:20Z), 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/ECA0U2500259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d6058ca5e1fc860ca87c44436519b01900070ced3e7c50c54e4a4b1b5306d1. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/CAGOO2068739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7131e897c51024f4d72d0d82f41596a8828772cdb5fe69cdbcc84192e847c607. 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/CAGOO2068740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995a57e5a283812adc881aa64acbaca01a75240d6da86c5f95e2cfb49ca760ac. 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/CAGOO2068741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0364e0e99632471ddccacdc960135738a36403c26af038c54ef57bdc6373f087. 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/CAGOO2068742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d6058ca5e1fc860ca87c44436519b01900070ced3e7c50c54e4a4b1b5306d1. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/CAGOO2068739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995a57e5a283812adc881aa64acbaca01a75240d6da86c5f95e2cfb49ca760ac. 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/CAGOO2068741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0364e0e99632471ddccacdc960135738a36403c26af038c54ef57bdc6373f087. 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/CAGOO2068742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2ac6c2008f52d761a9461d7c4517f0d82776f94cc4a4adc038af7e173920c9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CAGOO2065054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43545dd112fb813a2629190a601f25ea2d325733facdc6a76b0ae9381117fee. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/CAGOO2065052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08dc9e7deeebe6e2d451d734a5a166604a943e07a3a8f6c0d37bdee4a6805413. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/CAGOO2065051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311d0be3ddd8303dd36f91bcb503f7d08fff01406d09765e843cab0b4013599d. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:22:53Z), 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/CAGOO2065049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0aeb9d37e4e39b57b29138367b5e36726b83ca34ab6f2dc5c2dc322dd05a3a3. 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/CAGOO2065046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9c4b3616ddf7e5ff0cd86c3f39f2aa118e155ef7260d525c4e569611b91eb6. 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/CAGOO2065047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e1b70ce48120b6feee68f76a276da9b8f9245fa75c4048e12c3271c1d5cf69. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:48:37Z), 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/CAGOO2065053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43545dd112fb813a2629190a601f25ea2d325733facdc6a76b0ae9381117fee. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/CAGOO2065052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12b08dd934ac35812ee03fbc190f65fd84f759f006b29f9fdadc0212fc2b979. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:26:53Z), 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/CAGOO2065050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311d0be3ddd8303dd36f91bcb503f7d08fff01406d09765e843cab0b4013599d. 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/CAGOO2065049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0aeb9d37e4e39b57b29138367b5e36726b83ca34ab6f2dc5c2dc322dd05a3a3. 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/CAGOO2065046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509403fff8f0f10fdd0846605a0197c32437f1360278811dcc7ea7911f3b8277. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:02:23Z), 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/CAGOO2065048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9c4b3616ddf7e5ff0cd86c3f39f2aa118e155ef7260d525c4e569611b91eb6. 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/CAGOO2065047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb58df063d0ac6dea7f26acf0822901f6052265574452a95d6800a0fb31caea8. 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/AUMEV2151048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311abcb5aa43a85d9179888c4e456f9815fb593169b94a7d9fcab71ea26f9293. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/AUMEV2292458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38058ac0497aa6839126de07a17ecb320a7db98f6695826735545a9e13b1b6d0. 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/AUMEV2292460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf643367e4aa87b5b3183963721e1201b9fd4e5edd27f368b13536d2b1e2576dc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/AUMEV2292461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97dbe1fadb47804e6f059040d5ab52cc9fe7eb6256ef0cd90e3d53ff13bf986c. 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/ECA0U2500267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386b602621d026afd952ef577e186067a5d302b40dc8afff20eb656abc1966f8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ECA0U2500268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257f8d57a95938874895bde58fb01c057d7ea50e6e23a7cedb9a2de5645c757e. 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/ECA0U2500272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc089da9681f178ab5b52b5af2fb4f75ec8e40bdd61818236856a962e9436af95. 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/ECA0U2500274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccdc0a99b6805edec5d2913f8e5d5476816a60435c66e701f69bf24ff7199e9f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:58:24Z), 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/AUMEV2292454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811ea8a5c267f8aebcf6b18350a310b141344d2b73e97878863c057df1a09052. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/AUMEV2292456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311abcb5aa43a85d9179888c4e456f9815fb593169b94a7d9fcab71ea26f9293. 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/AUMEV2292458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa868434ff7d65f96e2fb0be3fafef319b50d81183b340a65e9c28dacc7a626cc. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/AUMEV2292459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38058ac0497aa6839126de07a17ecb320a7db98f6695826735545a9e13b1b6d0. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:08:41Z), 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/AUMEV2292460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf643367e4aa87b5b3183963721e1201b9fd4e5edd27f368b13536d2b1e2576dc. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUMEV2292461.