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 0x89e16aa5e71a00d151165fe9cce2a723b234cc65955a21d09a271c0a95300003. 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/d87e1291-e831-440e-8f0e-dfb5d596f8ca.json and https://artists.proofprofile.net/proofs/artist/d87e1291-e831-440e-8f0e-dfb5d596f8ca.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 0x080069f8658d2759f6328fd8b9ee14bbbaf93cf3b482e32bbb7acf6796c78b2e. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZWFG2370839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99a34374dd519ff58a237cd19fff9ccc0499ab555d9e28a2846fb1e5e24beda. 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/QZWFG2370840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d87a63c69b09f1188a4e31ac80989cc4b985ef7ec30b51afc2754b12b89c1f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZWFG2370841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ada6dfb0155d455669213f5a9103fb2bb4f24679024275b740b008aceb6f54f. 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/QZWFG2370842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb62fd6c988b2ffe6591ff0a37f6f01e4388712154d312ccdb13c49f10cb3f2. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZWFG2370843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13dc7a776b40ea83e02ec55660019b0bf4656138d9133f7db190fb783d43153e. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZWFG2370844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce0048c1bbde779b265cd50293eb456a2dc25e614d6eb405a9a1d7e030af9ad. 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/QZWFG2370845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a36f014594000f78d683cf5a3717bc6b9018655ad19f131cbf1bb47a4c14571. 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/QZWFG2370846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63396bfd3f205e7773761db2bb55e2ae55c18735cd3674809c92f764847cd587. 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/QZWFG2370847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8366366d5a0ac3a98463ec697608e4124605afbc57f84c5d571073c1cfdca26. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/QZWFG2370848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94860e42d16d50d44706c598148fe3c34899ba1b25282dd574341477b4b8bdf. 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/QZWFG2370849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4a6b1d4c5b32e45eb41a1f9bdbf26674d16bc72b5170812d0a915f4e1c820a. 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/QZWFG2370850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813007eca47c7a9549626ec31ee977956a70821c89ffd342dd9f282e11d69bd4. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:42:41Z), 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/QZWFG2370851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3042b33cff8a713cf8e1dac600e7f5b1c4b0731b270ac168804fba5acb4d3f89. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:48:18Z), 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/QZWFG2370853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f0d6441ef7a3123d7d5f16deb9c83878f3e3760bf03a568a9d0027c54cb8f0. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:34:31Z), 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/QZWFG2370854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da8b7b71c545482bfe8a616d186fb135bcb27ba03cd2444ba07c412d0d15142. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T10:55:48Z), 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/QZWFG2370855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345ae3bca4a32a9047e8c8d042fdd28e5dccd7225a6877ba0a8d5c556ab8ce72. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:26:42Z), 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/QZWFG2370856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34401492c275c09f42ec39ec54287733ca33df7de822d898ebe193ff48a18a98. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZWFG2370857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258bd405c56da1d19853a5d8ec5ff2bbda25ebeb3d5d69334604807fafa5ad24. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:46:14Z), 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/QZWFG2370858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d83f80e9e4c8996f48622a679b8a2b76cffb7ae1d1c650a5ea54e133b92c40. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZWFG2370859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d3f7cf31314c0b2c591095589c1328fec377fc648701b89bc6fd8a4f54307f. 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/QZWFG2370860.
Swingin' Through The Headache (Original Edit)