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 0xd957c0d32720f1bab3b506e2daaccc83a56d73740c61edf2c54c4969f2c1361b. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/62e2fe67-4bd2-4d38-a710-c8b4f7348ab6.json and https://artists.proofprofile.net/proofs/artist/62e2fe67-4bd2-4d38-a710-c8b4f7348ab6.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 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 0x1509413d53f5edbbcb3bce02c98123940ce3e69a1e32ed13e32b79d06fdf3165. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/CH6541784421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610d511c50b422e91f0ccad5f9dd109d42cb0e243b13996409a10d011a6b44f0. 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/CH6541784420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fc23346c60bceef53eef95b55f2d02b4bb60aa66e25b3c9a7fec7bce5fc9e2. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/CH6541784419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51236a6e44cfe4cb0d14b0a61c0d3c1401f048f0e95c9f88eb039a7eed2a793c. 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/CH6541784418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c19b85a280a4b45ce65d7c8c6c0ad4a59ee54cb1d0a716e9391096e48c23e82. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/CH6541784417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1581c5bc9ac489d7f5df77e168298ec2d9020676f649e62e70d84d57161aff1e. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/CH6541784411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339473e992863b7a7bf92622165f5defec8864dce0f7c54e7ba132a4a7df2fcf. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/CH6541784406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6842da64eca7da1c2e21e3c2e7bbe6442b0ca74e901e8fd8798d3053b4dd70. 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/CH6541784600.
Misère Record: Klassik Fucking Shit, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af5326efa1ce34f98d17b8ae11395b3235253e5364c53ea7c143804ae8d0664. 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/CH6541664060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96348d38fa76cf80d93e909903035aa4b59e38b0b89df76756cad52bfca4658. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CH6541664061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6615f17885cb3815feb0db2f4fb710444b55f8e0e31a2a5227ec74b0aa9298. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CH6541664012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ab4b80fc369ddbab813516ef2c56a111793b61880df629c29245ec1c6def1a. 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/FRX851801465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fd23e6def2a3f7fae84a2321b535c7f3f1e592699a56f868d3dec787c89683. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FRX851801470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c1aa4653cc3374dddbc12651b68553ac6b69a7bf2e495b59a73d5f4eac8a99. 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/FRX851801471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbca15cbac88f362cbbf4b027d714131dc1a5d979be005c452d9fab26f3248f0. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/FR2X42243999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6ab236e413ddb56abfefff1ce72446ef00d147ba296ae912282a42a967dc4f. 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/FR2X42244000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2112946aff1c26188a2998741f1ca542aa93ced304d0ac42c91a838757e4f39. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FR2X42244001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545ae6ea5dc6cbdd9f8b8f77621002433e4c19223d84b4c3e4b22a2fd59356ba. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/FR10S2274086.