thumb|The Sex Pistols logo designed by Jamie Reid in 1977 Jamie Macgregor Reid (16 January 1947 – 8 August 2023) was an English visual artist. His best known works include the record cover for the Se
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 0x1aad13e59d0f1513787584a8088fa8c62245b5de60a1d06913ca9c80cac5b809. 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/b7b953f1-cc4a-46f8-85d3-f1ac927bf3d2.json and https://artists.proofprofile.net/proofs/artist/b7b953f1-cc4a-46f8-85d3-f1ac927bf3d2.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 0x7452a8936aaaec12e1346e9370aa69197c95edbd94b68194c8a0a520a92453b1. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USHM90513366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982a5b7ead62ae158dfc307338c8f42ec660bc7c29c965dc50cb53f124a42f12. 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/USHM90513368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b81a26d0b781d4f534d22525b2dc854a76f6c99db424865dc065029aa7326f9. 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/USHM90513369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5588f474a9b8f7a9fd6c71fd81d930161401213147b774340c924361a5dcf4c1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USHM90513370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a33432b170f11278f671f7eb0b10154229817c1d3d0ac93ac4e70e1a60a81d. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/USHM90513371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c52a2253ff94a1d4bfbdf8555b37d7705618f9595f26301952768a456fc7d6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USHM90513372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153a30ba941d66f3bc338fe0add98de411f66b4c1355a30d4a23ebf021af7432. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/USHM90513373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2fa38dd13dd7acc4c0bb93d1bfedf6c3fac0bb7085dd01f522ad9a5c50f5df0. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USHM90513374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62e2354bf26ff2ede90207c279d7a9c0719ff12da33decc4764a41d19465eff. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USHM90513376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa450ff4a4d3127bfc54c467d22a003b0813d4aaf28e201535497d523f00835ac. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USCGH1284407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee286526c86bfeabf3cb72297de2243d16dda73f93750dc44215191c658c6e1. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USCGH1284408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a16d5f09b1fac9daeb710c4432f171f32904d964a07910848404e5f3b15e66a. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USCGH1284411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb1f7e4b3c191f9b4501fbd51c6c7485977c0edaf999379e5a42b40bd84095c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USCGH1284415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc173fe3be67cf279a500ca336d02d255627900a3d8395c6bcc4ea8279c73690. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:27:28Z), 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/USHM81749888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59b1647baae984aa04a3bc8a1f103220f01d04913db817aebfa6030a9bda108. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:52:59Z), 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/USHM81749890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49c7382f8a20b88bf43fa386b1012c0cddae6bcf755d1839e99760836f990ca. 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/USHM81749891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71baf13ad155ee43cc5b3ec8f3268abd53b2a2e70a3834326bcc0bb3898d474e. 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/USHM81749892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e53a3f9cd85d9f0a7d50129acf29fab36bf45426906cb5d0c3ae8e4d17b00e8. 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/USHM81749893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6126f9d49775a88614a63b4d60d56c875f4e142329709c84d468b21d88e0b368. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USHM81749894.