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 0x2bedd7bc0b281eb4df008321d045cf6eab170227e5be275182b4ab5d5fa56fbc. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a19202eb-9564-4317-8c20-e47d7cd70b27.json and https://artists.proofprofile.net/proofs/artist/a19202eb-9564-4317-8c20-e47d7cd70b27.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 0xf88122aa63d257fd6a4833fa152fd8b063aae0874ea8f948dd6be8fe73d8ee0c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/GX3Q92559324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6db0efb861f71792480f3ac96ee9fe8195fcd4bd375f33e9cde7e804d84dec. 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/GX3Q92559356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e9362b38f18970002e8485ccc2fe29274493149c3a382c29521e5f9542f77c. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:54:20Z), 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/GX3Q92560187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b0681b13ad12cb6ce4f7fa8a2866d5721fe39ebbdc74558d68e1f98e4fb88e. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:25:58Z), 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/GX3Q92560854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e930a8f9c739f746e2b9deb484e060d1b1d5bda6c13e6e2805e557ebe0b914. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:18:46Z), 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/GX3Q92585808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6cf338269c5d8ec28647f929aafbb83219746ee2b6b3408f8d358337e7478e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:40:13Z), 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/GX3Q92585810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaea87b68301bbf8c90ff3838be1c00b8cece7bb13983f66e798a2374f8c9c6a. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/GX3Q92583911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4b04c8e6c3d0a15771474100e8efea3865dfd1617cce4406ac232d2c9b4b5d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:01:55Z), 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/GX3Q92585816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc579e93be5fa33b1c9fa580a69e8bc5b71989a5b2736046eeb718ccbc57bbfe5. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:54:01Z), 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/GBLFP2515602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21589ff9cc5bcccd7169c7e7a7342062453550098fa32b18eae958c1839e22f. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/GBLFP2515477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8ef27f1255f40e59b34227e3662c45238840c04ecd455f4eb5904946823160. 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/GBLFP2515605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69379eb763f00c900f1b078f46534eb82c9c7f1ebbd71bebb47db401459dc7f5. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:30:19Z), 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/GBMA22509180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4fc4b07517a843ed36e2d8ce3b80885ab86545a104bf8f7554b9f8a5d1e5b4. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/GBMA22529671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70667f1afa971c898e44aa01ee2f18fc496afdb2fd5f5e63a279ff0e763b745. 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/GBMA22529672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6ca0f5d33eab97b38203169f658cd3d91984f7642af28ddbd340a4e04dce29. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GX53U2569068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b8182fd40675696ac1ff0e1a80adef5554a8f8556e045e741851c550ac6786. 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/GX53U2571787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd355c883d36f0f72f06a5edb1fff15ccfa45e48a6010b014aa01ddcffafcd7c4. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/GX53U2569082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7021092231459a86ec13cb24b17ae043267f3f85bb2fe873768754fdfe377fe8. 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/GX53U2569065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7190b25acca2e8d02eb58b0870021c8bd99eabc013520b7b281bf89349a054. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GX53U2581665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b00c591e6cfb6697df3a265008d60c9435d6438c7fbd5f8518c6b91f9dadc9. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GX53U2581666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5d686e606de2680e360c8b064a0982c7e9eb74a49ab25e021fd1943ca77de6. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T19:02:59Z), 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/GXHAF2550817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915f8b73494e81af78762e7cfc919fa2cfbc881b7e28e9f24af4a15e00255ad7. 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/GXHAF2553739.