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 0x3222cd6e77e032acc68becfa23e02a0dec491547540210eb5f7f5c4bbd29d95d. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9fe2d5b4-e02e-455b-bd0b-2660286ed220.json and https://artists.proofprofile.net/proofs/artist/9fe2d5b4-e02e-455b-bd0b-2660286ed220.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 0xd772f5ba4cbf25791fa4c4fb1b9ca0051e00a86ee459409c134c88e0e6af85a7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAEK1957795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857061ecf34a02418c1f9003988503064f2ea80a0d76054e8a895e84d41e62c8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM6N22167802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622211c12c0690fcd56d90ff000632bd64e67a9d0aa9a0dfa15ac3d68ad234a7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMFME2140181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d181886802f74bd237e2c336f97fc332ca59cee8bebdcf03919168e3c19dfe8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SEVWR1701907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a09d025c753fd81bf744972a9f06cb606e93abf515764596f90549fdcd91871. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEVWR1701908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e4c5bbf4323d0d7213245bfbc524baee551434acc0a73ada2766aa7cda131c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SEVWR1701902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cff6cd900a450a17fec1e673dd29dd6d743976764846fc1fbe9b0d9e53cfcc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SEVWR1701910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d98389e7a078adfdc6f41edf1debd44c0de6ab3a7085a7ae7e576701aa326f0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR26V1603536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff8d00637a0760243a3021a5215252e1195d318ac9c79884e51042208d5c6fb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR26V1603537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2063f58c050bab02d6359f056a1045c9f0d238e89926291e5dfb7ff3a5e04b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR26V1603538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2285e87954c2e42f2b9a75cef0c5ff46a8c392f98493ca2b1b41c9b131172b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR26V1603539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d78c5a7326306db98a8bf112cae2417ffcb39dd5516f8ed685224ac8f3a1370. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR26V1603540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd44a034e6feba3261d43254a8640944ac4dd3caf7e871fa0609dc39e5c4de5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR26V1603541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d5621213b95e03e80b5d261e9cfda6fdf0442185faac2e6b5155cf446a8186. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR26V1603542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d757c1aaad561035bc5a6f15ac83e82c75fc1ea396fbf650b7183228b1adf0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR26V1603543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fa517eadab41ef4da860bce58d3f845372f24284c9853dbbba564fe70dcde7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR26V1603544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db91b5cc5c2879dd4aa4264fbaa856b370cf8e9479e836d557c3c8c1df34f51. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMBZ92385298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857061ecf34a02418c1f9003988503064f2ea80a0d76054e8a895e84d41e62c8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM6N22167802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622211c12c0690fcd56d90ff000632bd64e67a9d0aa9a0dfa15ac3d68ad234a7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMFME2140181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd772f5ba4cbf25791fa4c4fb1b9ca0051e00a86ee459409c134c88e0e6af85a7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCAEK1957795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e4c5bbf4323d0d7213245bfbc524baee551434acc0a73ada2766aa7cda131c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEVWR1701902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b900fa0fd0a3922415a7e7f157b481e89265edbdbe07618b4206f3541789fa. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCACW1622260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447d39149ba595cda3893d2d0694c0a0cc7e26bae9898392c6f9cffac22c3b58. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR26V1644395.