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 0x8ea73bb7b416dbcafda487157057d22609e0e1f72e60fbe860ad4201452f138f. 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/9f744f7d-27ad-41c2-a801-0a5ca2d6ae12.json and https://artists.proofprofile.net/proofs/artist/9f744f7d-27ad-41c2-a801-0a5ca2d6ae12.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 0x2df41d2ff92afaad7430c629e825a0005b809985c84f722a30bbc54f027a49bc. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR9O82200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe405f55d71f4d5dc3b102567f4c9927f7d4c7c1e044c5aba1df3c323ca0312dd. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FR9O82200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7ce4edcbb9166288b25109920df7d3038e9342b9620355431664160eb4cdf2. 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/FR9O82200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14df135e0bfcf0afda8b9ffaae4f200db7c779658413291ee22cd9384cd15332. 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/FR9O82200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c7889cde5643d4c0b5164434ab09dbab530644580a7f1941f9d4faa3660761. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QM7282557341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba46a4a478756f776c12a3d6bf50164dcac48d2de0b64673abdbe901dba0dcd8. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QM7282557333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abff8b6d417deaab469b999d9e333610d114e27824e180542a28d7a681f99d0. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QM7282557334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fde2def1f2338459772bd380fafad135562a496ecebe276d5942084181c22d2. 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/QM7282557335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e07d760807ca63f24458c064c046f31c074b3db9c5eea02f25088ce79e102af. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM7282557336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9308a46ac924ea0a7ab7428d05ed2b58e9b4c046e7147068a3991cf1694ca8. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:20:22Z), 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/QM7282557337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469d82de0c652edcaa27fcc2dacdf467da82217203fb817c1914f11204249327. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM7282557339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9348acbe6809babf104db183f1dbaf148efc0efb6351ecd1e8d38013f1d539. 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/QM7282557342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717ac0282403502f8194b909e6db889adfb6c1a8c0015feddab14eb8c2ea5eb0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITUM72001153.