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 0xad5fa9130fd9c9fb7dc1b3d931834ce3fe90150a85599543fbed72bb44558aca. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5a031922-040f-4f49-a780-2ccbd270edda.json and https://artists.proofprofile.net/proofs/artist/5a031922-040f-4f49-a780-2ccbd270edda.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 0x60645f4f7f1386210cbc08236c2a1513bad094a9d01c9aa4b6cb3af41bc1f53a. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:45:59Z), 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/GXD7G2548510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa405648228800ccf9e3815f8566218e156aa731e0c3b7224869980709397c5e. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:01:03Z), 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/GXD7G2594668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379ca6dae82818c364cf87ff22228270bfe8323e1414b1fc6a2467ec0088a87a. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GXD7G2565271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937ae97bd373ede95dcb49505001940312b8652431d981404d68b5664f2e06fc. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:27:51Z), 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/GXD7G2597178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7242af73744605431a6df612fb073e9158da1f9a30f0eaefe854a157fe61ce28. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/GXD7G2554519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f3bf5e4597f42d4a842e9848dcea5d14c7708be6907d4ae6ecbff22b80436f. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/GXD7G2594338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb05d303679fda9a9582b4e76a960252e5ec1ae26af4fb19b1030b71d74657d. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:29:54Z), 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/GXD7G2570285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17fff7d75a4f10bdf1490596618c6cb602b8655aa663a78cb63694749a651c85. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:31:21Z), 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/GXD7G2538292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24df082d0ada7ff20bbb62b70fd31e24e1c44f800137e5403cb79828e970dfb. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:01:18Z), 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/GXD7G2545402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5bc3c9843442de948d16a2c89be9d7d393cf2c767e1515c015adb1c63ce802. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:05:51Z), 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/GXD7G2535884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c6424b068a320fa5ebbe8d3da28e217dd2efdf2568f2f89843356f1fbf2d39. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:06:40Z), 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/GXD7G2502238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ae590471e4bc5cefa45f417055e2ef04d59c70515a674019bb7782c10e18aa. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:09:35Z), 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/GXD7G2559502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bac398125ff10c3e4545d030bd315074c73c6e3e81ccbe65231169c5b04668. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:28:08Z), 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/GXD7G2508661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc679a3908d0d23d757998999dcc2935bbd84be5a6c48e69447040aae8fe07d9e. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:06:15Z), 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/GXD7G2542839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc41e488dc5aca8d59d2d0bb3af329f57d0be39015e2c56963ba94c8c60fbb9. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:01:00Z), 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/GXD7G2573793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb1647b7ac604796cc63fbd4a2084e6e2def80f52e687bbe36a17f9d1c39caf. 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/GXD7G2566877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06162362668b117ba0f3d098ca827543cb72a5661718cc46659c61fc18515eba. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:44:35Z), 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/GXD7G2558764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0685019b02644c1baf64ea9beee76f56b3c034a59d35aeabe0513bb5b84ab82. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/GXD7G2519446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b35950d8aba6cb6c374d7b527cd6c424cebbdc20311d62d1127b8a77b04d379. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:31:05Z), 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/GXD7G2531577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e38f6ab09c5f41af6a72922814c922495f38e02f954a5e8a0adea8c18222228. 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/GXD7G2574285.