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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f943b601e98841f2c5ddd2e53c38bdebcbe57d857bbccdf7214e73db7fbdea6. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1c357959-7cb1-4dd0-872b-1c0d2d07fc7e.json and https://artists.proofprofile.net/proofs/artist/1c357959-7cb1-4dd0-872b-1c0d2d07fc7e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sick Of What I Don't Understand (Part 1)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d4ce11823a7c548c1342932d9f3a22030efb9871fb51c244e1f7cd67bb2677. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/AUQOG1700005.
Sick of What I Don’t Understand (Part 1)
Sick Of What I Don't Understand (Part 2)
Sick Of What I Don't Understand (Part 3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaff9cb13f2937ef5c98d57a43d0a55a9e719b199bb59395f5d1a460a7b6c598. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AUXJM1900118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5930ebab11901a4eb3fbf16bdc24d8be2bba561fd232051b3c7ad23f4048613. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/AUXJM1900129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca69d3b9036a36f8cc26b36b8606739b863c9aec735f4093c158c6202144c281. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/AUXJM1900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05b45e6278b54a60c92e9fe631ec56cf9b064d2d58031c04edd03f3742b8906. 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/AUXJM1900090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b814acfd9d2b76ab11d00cc682f4298978ccd8cec3fd2089cbc632e4621ea2f. 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/AUXJM1900091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd1e824b12e27df1f786aebe51c050dcf19254fd3c16b4e4d6b1be22609c29e. 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/AUXJM1900093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee6c496133215dfd4dd1237ea98b5345af426c9ba769a06671140db777b8456. 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/AUXJM1900095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc400bbd4906a506a8f82de68fa1c961ed7cf9dc6fe9eb581bbf5b723b1d549. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/AUXJM1900094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaff9cb13f2937ef5c98d57a43d0a55a9e719b199bb59395f5d1a460a7b6c598. 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/AUXJM1900118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9ebcbef9bc98182e7bf9e15a3fbb6bd1ddd2d57a4759b6e6daf0462ef90aee. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/AUXJM1900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562b6a3202517ea14226c4945fbe12f6f9ea67f794d4f90034e7e6a95cce73bb. 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/AUXJM1900092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b59084da95dd68c2a6d5c102da5c2736986c7dad9fe2f93742f7e9ba3d569a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AUXJM1900097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f0b3ad7fe178a5fda5c033ed88a0bfb27dd6f93937b7745cc52801c25fd02b. 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/AUXJM1900098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f508e40155d33d25f228e9a5f8bb732e39d933be8a7e13f19c559938880d1b5. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/AUXJM1900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3332aa0236ae0003cc3db1ae132617eb12825d354b699fe4f431951f27b945. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/AUWA01600426.