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 0xd583693d440458432e1ea757b1628d0dc998a831fa6235524c60564cac69cd8b. 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/c2aa5bcf-f7b6-4f5f-9634-27a7f9b5de9d.json and https://artists.proofprofile.net/proofs/artist/c2aa5bcf-f7b6-4f5f-9634-27a7f9b5de9d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Party All the Time, Let's Celebrate! (Hey Hey)
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 0x7872d68d81f887bb819d3d37092e95bd491fb2703633a8bac91a17d713a99d26. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:33:24Z), 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/ATR981197251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a2fab078067419efe476f73221f47f0041873d23202f510635d7895e72cbac. 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/ATR981199150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304ccdcd17f6e9e8a27f2d4198e2e8bc1df04b0c80c1c89ab2c59f78ea88fd8c. 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/ATR981199152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9794a79b86a1afd9b53bf3a66503110cfce3f3f5397a36a2a1150e920d6d40dc. 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/ATR981199297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666f09236b59de681e4097dd3e70bc5f9bc52f9a21e3e7ca0e10f6e699b72a16. 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/ATR981206765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f45f033152cffa4d75b763314d49c0a0acaf53f4c6cc799933faf0aa92d240. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:13:20Z), 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/ATR981209608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615940098d9b7fc982273763b3598b6e732e5d0ac51345a751f93b68787299ac. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:36:42Z), 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/ATR981209666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d4cca402918548595c570dfc4139ff596582ad8d8e418cbbee71bdf94bc3c9. 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/QZKRL2000143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68385cd1e8633a2e169b260f589a7885115f59ceb7f96b33ec8d6e386a3a6917. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ATR981216133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75506efe83f4aac6fe4257d4ab6353188f371070f2ada0a898594f6fc90ab32. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/ATR981231817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c73f5cc83a8c34d03df5c322c220f4ac42b76607b784b0355d3c8924c91a87f. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/ATR981235420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c97bec8d767362cb972d78ffa3c8a51320201049eccaff0a4817c5dd7a4a18. 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/QZVEM1858174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9800820bdfeea875ff3dd0a2ef0b47fa42ca3caf18146a3979fb595ef7e1ba5a. 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/QZVEM1858177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc38d8ef028c6b9737fb10470751d4c4663e653e5c9c5decaae832f504a9a6ad. Chain 2 (Bitcoin): anchored in block 957844 (2026-07-13T10:17:20Z), 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/QZVEM1858176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea412f52469aeb97afe78d2874d1f96ff054c9da5a8401fd43cd6f9ab021cb8b. 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/QZVEM1858181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbddbf35c07819347d1d59b3c5b5e41ad9a10ec13107d530a1f9da6c770634d2. 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/QZVEM1858182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c85fcb65fb5e2acf923766cf74b7a42bace796a0eee9065b4f1dc664a488d9. 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/QZVEM1858170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0389aad6218f108f30749cd8486db1bf96edb11d1c94d506c5938cc1c8a6f49. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZVEM1859810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5886edfef71ddb05eaad834d5fc6225011d6ad190d796578a6bcc4f6b5de9d. 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/QZVEM1858172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818bda9e64433fef8864bebe90e09929f1b16f2c40351a9aaae0e044112a9dc4. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QZVEM1859812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c8857b84aa9d7fe2ac4ad5e16f391bc58b8e2e39ad4346b0a178434b2ff2e1. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZVEM1858173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f39fb9c259761c5ae7887c70b523184946aefff37c55547634ade058151efcf. 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/QZVEM1859813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccaca303b8deef7831a9e0bd6f7260acb899529ccd3e47b1a4563990aad88442. 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/QZVEM1859814.