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 0xc0ec16a39b3a5b086f519901124b26fee605f386065a7485e42fd69d903aafda. 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/8d888f18-6ece-4fbf-aa63-4962cd3af8f3.json and https://artists.proofprofile.net/proofs/artist/8d888f18-6ece-4fbf-aa63-4962cd3af8f3.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 0x05f5b8c517b41eebdfa1ba411d298009494963823a473ecc0dcb9e9805c199a5. 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/GBF7W9911801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e864f3b95508058f49651e87208333dfea99970092385d1b67ccc0c44febd5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBF7W9911804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbaff46067c759ff31716e61ba50e6fd777d302b2e06e81acb5ccf6d59982f91. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GBF7W9911805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27366ad80463053fdc9203c15a5a40c60e4146a9521d2a4fa5831a85a177182f. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/GBF7W9911808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99797efb666a3f3c531bc9b046f89785e58dcd775e8d8f587098f95a4db05410. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBF7W9911810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39b14b458dde0d86c7688907cc9826c4a507c759697049a27f8aec3e4fc6118. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBF7W9911812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25052313287dc095ff3609e669182f42343ac29e63d344d8ef3484f98e778ca. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/GBF7W0113303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4872cf7557b8ae265b8297e60ca587b11807a2971ae0c44c9d709247d47564b3. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/GBF7W0113304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e58af6daead9e3f523e87d946bfd36f5544eb22a837ba18f7ee7349a7dc709. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBF7W0113308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0826c8a53eac1ef86d05ab8face148d9f3a889178b28421c7e6447836ae3ff. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:45:10Z), 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/GBF7W0113312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8fdea32b8a53a40f43eac3307c1495238798d10a8395ddaded8cd0c824fd82. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:29:20Z), 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/USJ3V0655027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13394393537f055f175a520e54e36c74e471945072f5ce13aa1e0e2f06207c50. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/USA2P1459876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4371a196f45284bb79a4f5dae220e89ea37298d3efa9976260d4ce12af14cc22. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:59:16Z), 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/USA2P1459878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6193071db13b15c7a835fcb2ccf7799fb547d9834e454ccbac0eb744e2d77732. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:03:27Z), 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/USA2P1459879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc54647088803ee48e8749b343e5b1b73372c3a816e8fc9038db0ece52a7298. 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/USA2P1459880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a739131d535a6a94264f847906680f6b251cb4bca086b565a04cf4213c0f206. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/USA2P1459882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcef7aede5ebccbf088b5b1f06ff233680c526d6374685358d80c4f0699903c7. 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/USA2P1459877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4371a196f45284bb79a4f5dae220e89ea37298d3efa9976260d4ce12af14cc22. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USA2P1459878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6193071db13b15c7a835fcb2ccf7799fb547d9834e454ccbac0eb744e2d77732. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USA2P1459879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc54647088803ee48e8749b343e5b1b73372c3a816e8fc9038db0ece52a7298. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USA2P1459880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30740ebfe16510f5257d07eacda237f86b40369e9d2e8303609a4c73ae155ee7. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/USA2P1459881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a739131d535a6a94264f847906680f6b251cb4bca086b565a04cf4213c0f206. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USA2P1459882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d898c466adfe39519089df49b2e311353c5485d495587532749e3cfd549708d. 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/USA2P1459885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf489a9bb23b1d0c561b1467cc5bf4048eeb5a40adca83ae74e10fa1c874d1edf. 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/USA2P1459887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212ddd4cb9cf2fee20b6e159cc7f8b8718928d8bc8d3165d8143ff54182bb849. Chain 2 (Bitcoin): anchored in block 957726 (2026-07-12T16:04:28Z), 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/GBF7W0012405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcc5fe8a542c9823789f3e9e0b05e4d4178a96dd88e4028abb74766e96df36b. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/GBF7W0012407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa659829165d54bb4c9d42ec2cc25274315f86aa261d5ad6b8932f832047e8e3. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GBF7W0012409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c8d9389131c94bf80768774832933f3f7b4832f22e2d229f196f599ae36b76. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBF7W0012411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf351cafac5b26f55c74f89abfffadf1d6522a04cb67e51b8eb3cb044ffadb22f. 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/USL4Q1752884.