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 0x5cafebbdac68eef20bbb366fa92628d545fce87e21c8eec18bffc0a5998d8791. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cbafd7db-d952-44e7-9e41-acfd4d28e71c.json and https://artists.proofprofile.net/proofs/artist/cbafd7db-d952-44e7-9e41-acfd4d28e71c.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 0x97e933903bb875ea2cc3ef15ab8662d034969bbb54514bbe9477a9e48ccd4214. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:35:12Z), 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/BRBMG6600026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeafc481778653d0915db9aa8efe6ec7f684f930865b091fb60707154c5c8e98c. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/BRBMG1700141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6d6d7e885705f33090173c2d482bdeb9b8ee3b2d97adb4dc103b938c1a4eda. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T16:00:44Z), 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/BRBMG1700142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d62718bb5dba5927f8e60946875695d8e1a269bd5231034c5ec686dc93bf80f. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:49:31Z), 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/BRBMG6800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10867c78d84484d60f411c6459028b66dff334b3ddfa4171db785195311b0749. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), 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/BRBMG6800132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f59f0b629d05e30c32f5c259570f52ab33b4c12c5a5cfa5125a4a89abf1557. 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/NLRD52420416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da4b37cddf6ca3d90a6438eaf8adee98684b44b7ccbdb9c8e6eebe0be6d0c40. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/NLRD52420417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e611c2d184e6dfebf7310c49d7e28df568913e67f6b56663a79385aded3295. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/NLRD52420418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a2f2927f7565e606250e0028d10ee4d3855791cbb22183205a1afc160f9827. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/NLRD52420419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a0a7715226ad8c7a73d8a972fa1742b6d522293ccb4550478c4c3d94b37884. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NLRD52420420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd56538ebbeb01ee017380dd5ac8ff1bcca4bd56798c96831ebda9c18907245. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NLRD52420422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589f7db857db466320f174f6980ba8ce33403e7cf496e122abbbdcff811c4190. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BRBMG7800176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b08a8fc6a8b361dd06c834839f3da8c9425aed09c5975634379264604c08798. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/BRACP1000100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ead53a5184e17531d8ac8eca086fa44b44bb40e6e12442d8a3c242c805de6fb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRMVP0201155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0571ac7e0f005944198d5b1ca9495354d43710b86e7d9f8b148f1b4083ad742a. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:02:33Z), 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/BRMVP0201159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7434ff1edda6704640648d756880f2d6f97b44b5bc0a1c05e16e774fa7468d6d. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/BRMVP0201170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91bb8e18d9f7409b7d1543d66a972729c0252ba768567f96327efeaea9cc51c7. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:33:48Z), 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/BRMVP0201175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5f531fc3056275f586a78a7f1b64e7cb1f665f2e3d37339adf1a4aa29f0676. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/FR2X41771067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb731f9b2887916c7b945d2711c79c8b0a7a68ce73ee3de0ee5c209aad189d9. 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/BRBMG6800116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb731f9b2887916c7b945d2711c79c8b0a7a68ce73ee3de0ee5c209aad189d9. 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/BRBMG6800116.