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 0xe7065b8301642d7a1ab5665a28a8f8370bf7cdcaec48f5d4f0a77b8e02accb68. Chain 2 (Bitcoin): anchored in block 953602 (2026-06-14T06:58:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0e693bc3-bf48-4804-96af-a419e639b586.json and https://artists.proofprofile.net/proofs/artist/0e693bc3-bf48-4804-96af-a419e639b586.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 0x38c1106dd88c88e759140359cc7835818aa14745b40d4f2aea1f3884f5f79b20. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/TCAHI2352214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebaffe485c0731adc4fef39da7c3828b5c3420991bd23622de8b90ca4c6561d. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/TCAHI2352427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb869f1c937686cb958c1d040d48df9dfb5da8cfbcb1992fc19942fbd3157fba. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAHI2352430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d51eb23724bb1ec4b6ab22652e36df9701794d0d956c77af8dd321f8f56f967. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAHI2352436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43492f91c2e06b823230ce3074622ea2b6e4c92685c992bf83790bc50df9880. 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/TCAHI2352438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ba8eeca9cc4557f1e1d6c395cf6bde7683764c198e0297664ab64cf2c31e7c. 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/TCAHI2352441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4c13e8a177b68630e76aecff48bc7f04b18782def178957aee546c0ab119ed. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/TCAHI2352448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e89d892300c52f4f9dea986af1c195c0c0118cce94688e68c5a8339f51af7f. 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/TCAHI2352462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54dd16af8d31b4c57aa4ba40d748de9e6856e288a67428702956c892633a2e37. 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/TCAHI2352471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa98300ae9c19120ba031fdf5bf6cc926f47e80d649741e0be6d90b7766986da. 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/TCAHI2352477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c57dccce4f436d39e093d29dbe0d7b1261e3e64ed6a46867df6a26d40fdfd1. 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/TCAHI2352488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfd5ff6c56da710ffdaebf21c00486da0c8854c7a477af404d7eb2281acb77a. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAHP2328185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3849ea2a0ea134960632b653425e96054833fef499b8022587274a0cc7335e2d. 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/TCAHP2328240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556651f827016aa9ff764bb019c82650729816fbc9b92b0c7cd94ea4f8d26176. 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/TCAHP2328241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835d59243dd7fa7da3e46cf2f8a43ffe69ed107f9f994290ed9cdca944ea2a86. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/TCAHP2328264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41072ae04a822581e59527d30ff41ce5117699d4ebff42554ed10e4ef806a584. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAHP2328283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaddb301f935168f0bedd2588311ba7875a81651e67252b8f57b80d0e0aa811f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAHP2328288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f24923ded979b390d482d0b5913e30e76de7f7268e8b9bc90a04ece4c0eff3b. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCAHP2328293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901b4edf0a9e0131ae742ed8f5fbb15570b3ccf845a8d57b7282b0fe5ca12cda. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCAHP2328298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba414b8c7fd3cf2a627b65c575e02cf8897092b8c883e700947ea97ba25b390. 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/TCAHP2328307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe763a3abcbc181669a1300e5d529e611ecc780ed6fc84dcc6b1c09505ffbb299. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/TCAHP2328312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf31e027ba4719d2d04658b70c6f13af3c150e13ab6b4e326e27ae8a4b3d653. 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/TCAHP2328317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b76cbce2c5d971dd4eecf8c7ed3a707670c6c2851902d32bef0f0d372047db. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TCAHP2328321.