1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x20dd536a3f0feaa73ea3b2c396829addd8eccaa92e33b95daf79082684144552. 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/3b974118-23e7-4f54-99d6-f309da1d785e.json and https://artists.proofprofile.net/proofs/artist/3b974118-23e7-4f54-99d6-f309da1d785e.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 → block OTSBitcoinBlock must exist at that height 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 0x65225659b7f1d8227947d8d2b53b36b2b4b118aa5072b8df1950eb3ba5f6437a. 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/JPTF01108201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6300d6afae02d2fe00a7052dead1cd146d953b37e54d208fd4b330d5289e89. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPTF01302501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f3d7ef699e7a19e167b749b2e14ac4394c2a9526a644efbea6436b1a0e20a8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPTF01108301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46edb68c236b93345c8541c420b2efcd508f3b8b437d4c30a1079b3ece3b6cfc. 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/JPTF01607101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b88d23939ae86920534acd2511ff04d09aba81386e0926336d46acaa3c93e9. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/JPTF01607102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6865b0b5b8e055b1ed6336743331ac034b6a9fe2fe92125b144e6b05fe9037. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPTF01607106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71556c3e0b80292721ef038a80d825836431db3087ad3c280a9e24d3684b4f40. 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/JPTF01510602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d385ce2e2173a5b3d4fd36a1561c86837979ebb0ff28a8586abae6bcafccaf. 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/JPB971700202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5605f2f9bf0fc72f8d3d28b677283d0666f9be13924bbeb96ac8cbe355be2ce0. 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/JPB971701302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c7cfbf4fd342dd936c672b67a4faf0e7e00cb5ac535836532f679a3fd7fe7b. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/JPB971700404.