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 0x16882ed56e199e5b2cdba6afd4ea04378bcb52f812496fcd9f4de8014d0ca0e6. 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/c49e1ad2-1801-4f51-b6ac-8816abb8a61d.json and https://artists.proofprofile.net/proofs/artist/c49e1ad2-1801-4f51-b6ac-8816abb8a61d.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 0xd616c82f1686b0ea0da33730c9218475853c9821c23b823363c3733b959ba134. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZGLS1919428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6dda67ed4f4c8a25003b2b2c966c69984e12df1503547e10cf4af1796cc84e. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T03:56:08Z), 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/QZGLS1919435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42d93e49a5ec7c3aaa03c5f530b1df58e8f340d78a988ca03a635a97360f1e1. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:58:10Z), 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/GBLFP1883823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787c653ad65c664dd9c89821cae938911d89152fd40cd18fef6f68b9a20ed685. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/GBLFP1883825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326e6b152239086dae7407237877728edbdaa378d89c55f04d5af587af9efcb6. 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/GBLFP1883832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fabdfd4cb05c4a6ff1ee20ca81471c7be799681292d86e1b9371291a93d081. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/GBLFP1883841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bb8f33920067acab1e6d80a38d19b39a79cc57f5716cad6d90e515ca0a83bc. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBLFP1883846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c223772ada92ce3f26d19fe6e7806057d71beed7cc090e73b433e92066ff87. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/GBLFP1883848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308ee0ef250376cfaab352db56123604ce607ae54e01e0d872f837d047079a08. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:10:52Z), 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/GBLFP1883855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2e4be398b84459ff6d5084900800911603000db7730eadc08ee28824dcedb6. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZ5AB2080019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73914ccda88a5858c4524ab81a0b79e962a554110053f5f796e91f4cd10cb776. 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/QZ5AB2080303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf84946df99243bb983440b4be5f03f2f54c5f488efaaba2ae5add53cbdf4ade. 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/QZ5AB2080129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1deaf985107ceed0139da3d09f376b886f79ba1c227e0fe95202899e5021338a. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZNJV2307194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54400c6f257dec1508583bcc84ca50bdabce986ede4d8b878902b74fe0d44427. 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/QZNJV2307195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a6544fe461a3587a2a098ef093db4496656f0a61940fcd1682bd8878acf31c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNJV2307197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae7a4c769efe0e41d6fb44f7a69821e7d6dd7a3a7b6e2c7d0862bc3114af2e7. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T22:50:02Z), 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/QZNJV2307198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a432e9e4e394f49dba84f673113877a28634d66c30d40209c5b77e98e90d82. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNJV2307200.