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 0x581d5c8421fb1454b9160ef79bda60cd7f402ad2882da115c5a8e598fcfcd718. 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/ff02d6e5-9168-4df1-a9c7-4ac3213bdbf8.json and https://artists.proofprofile.net/proofs/artist/ff02d6e5-9168-4df1-a9c7-4ac3213bdbf8.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 0xde80f06dc510465101805e1f9f6b4263de259a78118892c9b509fe1eb5548fa7. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:54:19Z), 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/QZRP42171938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ddca9a87cfc0bb517f8e0c60cecbe1894929fada1bf6f17f872ff4739b6a11. 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/QZRP42105533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0707c7ae7e5ae5f226a6acbb3c16d13330e288a0c4613f0352efbd788220b9c5. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:08:30Z), 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/QZRP42168166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7121a96dca045149909930e1d2beb499b64ba441aed63686305ab240a8ae6bcd. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZTAT2162490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966cb94f35611b6f818259cbbb26e8c5872b7c550fa58882ba9ffbac291c4f29. 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/QZTAT2190930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee22e12ed7492fa94aab1be5ebc4dedde81ed731bc26c16512e54d3899620d2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T13:59:45Z), 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/QZFZ22219391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182f1da3f9347668740e1cbbd57f6b208ef5707a1169fdd7321bb874c997d1b1. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZFZ72215706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96f255d0bd22a210c3cd743172eb66c4cd638879620c8903193ba83559ebc62. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZDA72258583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ff0228600a7feab6854eee0f96d43b90652b39161b807254eb7fd3ad459155. 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/QZDA72222781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc3e5f7aff113822c6bab81fe07d50c21476185b7b623f661e93d52ad159687. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZES62231517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d06454fc3e71c679075d71ca47ca6a776fb5fc6f828e930f83fb1c913a66a9. 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/QZFYY2375695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af64f3e6ff2c1ff1c20f7d06c4050365326a34a3eb34591973f0569ad8b74fe. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZPLR2393919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713f338d3bd5a1feb5340b6d9362e77cb880f8265e2b9c9aee29bb432ebe47d5. 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/QZTAU2397934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668ebad4158860a24030d575cb01e72b03fb1b96be66d997afce60641ebb1518. 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/QZTAX2361212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5d4434f2aeda269eecd5a59fb52fd48612e28a4b177b31d6aaa1582a32fe8e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZTAZ2344272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7feac760e48f7fd1c0cb67321228498a084203bdc5cbccf7d9eeaddd9ce9f8. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:54:27Z), 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/TCAHP2357510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb08f5aa0459b5c610004aca7d8523a9f1f54f3824c833068ca9dc12cbb176c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAHW2450895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6682c15b528dd01e43307759292654cd4160616da7ed4a25a8cd4cc42cce0b. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:08:57Z), 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/TCAIF2447800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267f9df746f55769e6e387672465c0fd362f3d9bf82dfa093e80936d41510c06. 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/TCAIF2481239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7db41f62a6a91803eadab6acf43dd76eb0628b67c9033288bb3a495c5bf90df. 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/TCAIM2438884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afc90ac1b7bfbbd16f2c01bd15aed1cfd19ac2012cf40bc160d0210d75af9d2. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCAIP2420214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe86c8e8e64bc01bf0185c54beb1d0fff08c0568543242741cfed8ad7cd9e1f8. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:38:45Z), 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/TCAIY2432350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb072c5d2315938e8162cf8bedbf9a232ae92303ff9048682be7a8f595966f2e. 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/TCAJG2505397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad90e23325a539ca9ddf66580fe5a9e10a277c9edd412a4415099d0099e7b0f. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/TCAJF2540226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994b5febc02badad9b9995eaa4945b09f4c33deabd62f8c13f35ee81b5ca231f. 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/TCAJH2544029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97ee88f9b9ba5d831fdc406efede8f0d760909ae1717f09fca25c741ab64427. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAJK2503666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5c2617783be1a5c09ce5b655319b64f15c274156305ee3d0d93cd35297604f. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/TCAJL2598586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc419187d15a45de40019feae372d5007b995486e131e33c78a644573edd77e17. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:44:01Z), 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/TCAJK2571250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff936c8893e568f428c89a49e827114c7471d2025ffe51a1e0b7ece7ec523f44. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/TCAJN2575251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38473db3216be0f641a5981402a5145194baedeb75a21da14a04b1b243f390b0. 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/QZFYZ2449786.