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 0x42d0bafc727112aa4738e8a31fec0b1fa34e92425dedc45e3ca7274463ccac9e. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bf4bf1d1-297e-4463-8e2e-0e218a754ac9.json and https://artists.proofprofile.net/proofs/artist/bf4bf1d1-297e-4463-8e2e-0e218a754ac9.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 0x48429c7994212d0721154d92114fffaff85db19a4ded9c147d907ad5ad4ce092. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:55:03Z), 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/UKXN22304545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052dcc30aca4e24bccc17437604c10e4d929c3a3e5d970f3324f4010683b4c7b. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/UKXN22304546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e6080a5043d4e9dde05a7427d2132a31956fa4a83de774b2b6cff54368f0b9. 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/UKXN22304547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0cb9bb7fcd5842af392bc0f6300074744710206da15b4fef9c0d91659848b5. 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/UKXN22304548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2c8e86f67099213e6def9e9309b8914469ededf53fd5b632d25bb8053c6e6e. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:58:37Z), 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/UKXN22304549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe257e1e8b19ec8ee0decf4eaf2c0c6920ef426efb326530d832b832371874b3. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:08:45Z), 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/UKXN22304550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3eb3805e69b35f7e2c60b9b967e00526eebaea1cb186abcdca7b6a48125f3f. 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/UKXN22304551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94aacd0d6a49fa131e5e478f33f1ac72d2a69ccbd04a0db2ca79316981ee31c2. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/UKXN22304552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c1b3e8c4e8eb7ae69a456add7c483e2826ada3e2516a97680dce8fcf15252e. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/UKXN22413422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560547d234ea01a4eaa333b6cc5b81bc55b4b3d40ff80818513dc9fb130a285f. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/UKXN22413423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38d6f348c3dafd8d497738d1dd63f797d40079050b1b1e2cbd293b1e6bd17e8. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/UKXN22413424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4476288bf87211d8cc5c2f2d0663dd99581b0ae860e73652edb07abad083c1a. 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/UKXN22413425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7cdb0ed9a4d734664446b23ab34794df5e301afe0bf7b4d189189a9169bc406. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:45:31Z), 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/UKXN22413426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc350506538b044144b00bce0347c89405a9a74d256ef5bea75d93c1c3197a99e. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:07:40Z), 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/UKXN22413427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d1185afbd73fbe294ba5e780e11220040e785449972634c8e771ec40688c76. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:01:13Z), 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/UKXN22413428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6daefe33f62a1e01d3b121cbc2fb525ca13d324a2221d7ed9bb1d70644c3b5. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/UKXN22413429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443c9caa3900a5ea87ca5c90f5762e94b6b9883c541720bd1209c5da9d1097a7. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/UKXN22487821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb2adca0da5b0cd7b19c2a8ef18290f1b77462626c49db8bcbcc622d46177f3. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/UKXN22487822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3893e343f5c51a4f0db4f1b252c249301a0836828da4b270ea350631905b986. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/UKXN22487823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a816af2261af2559d1c1c824ea2c665216634724cb80ee754119701097e019. 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/UKXN22487824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1b9f11e8b77aef169bc8e12a3169bbaf58050be6d4c9d45d2bd7f962323a30. 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/UKXN22487825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7204135949b815d86289859c2cf9910a829d9ae6c7df60c758936ee2c622024f. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/UKXN22487826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557aac08a299801f2f165d3844b84a37cc4771f40e52b4b78400188390414c1a. 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/UKXN22487827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a58e56831b688840c5a662581177756cbf674b53e1f909559728adcd497670d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/UKXN22487828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb97be92d77a7cd2888f3692a3bfd901103c911a9a22640cbac2e9f78e45d51. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:50:34Z), 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/GX53U2323282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4062099899deaf0de8ce2c96c3b4ec9b68e5ad20a74f9439f652eb43408cd53a. 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/GX53U2323283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf7a7cad6a84d1f5e822e18b93629cd2ad0dff4c2a5083c72078f6e8600fbed. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/GX53U2323284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6041b35b9f288183fe159080f446ada660e6fca455a291692b5a6b7b284e29. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/GX53U2323285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ee17dce03d4e8cdc968ea0330966c5214889541a22994369a80fea46ce6719. 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/GX53U2323286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2260cd5663e9051afbbf751112beedccadb34df78dc554934aef82c7dc8cf8. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/GX53U2323287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5607f53b28e7cfeeeb772b1e33e276846df7213747ee13f409040fee43844a. 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/GX53U2323288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc0e7888dc0bb009fc1f9e6e3d8fd3998354210ff807ecb05f8b4157eb1118b. 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/GX53U2323289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2480f96d91d830e15ad7705daf582e1af01e44ad718cd56b83956e67f4652bb8. 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/GBLFP2519011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690cc5918bff2194e966ed7e2c2132310aa5f9be033782e6576176603ea159ef. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBLFP2519012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ff1cfd307d4b17c2d777a4aba6ca63b62a5b33e54fc4170d384686823f930e. 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/GBLFP2519013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1493d61306312ea36d35a6d572cc9815424ca0ede5afaca27e352d4b95e06b5c. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:54:35Z), 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/GBLFP2519014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9349541747d432a5b2eac095d50c78f8c8d1309dc8c8afacb4dcfe3a2b91de. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBLFP2519015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55da8cc434e22451c2910eb94a1110655a788f2fa84dfb43974ee4fdddbef982. 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/GBLFP2519016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbded402db82551f076bc77efc3399480981f151df62d4f5e195a5bce7d66e530. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/GBLFP2519017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d78ab70a9b6fde86731280b5cd9d1baddf0ba17fcf42a2b0f8254b66c80cda. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/GBLFP2519018.