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 0xcdba902f96a8d7a82f476e6d5bd3f4b0a6ed04b139ae93cc01938ec4d3a90d7f. 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/fd3bbd90-6079-4f4c-963d-ad53bf2502bf.json and https://artists.proofprofile.net/proofs/artist/fd3bbd90-6079-4f4c-963d-ad53bf2502bf.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 0x322bb38ad2cbe0cb4d4969bac9b74cf155af2498fcfa868cb7255b46bb091083. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TCJPM2087412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b8b02c35e7ad7798121c4291e2f260896e243ed7da922f2c1e402b140b65c7. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:42:42Z), 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/JP92C2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094e9ad6d9c1ad2aac04609990f1a05cfd6c213a8cfb0e2da460ae99855d4974. 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/JP92C2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9ca2eaca2c537b85c8ee888034eab318653d755af797bc7d10613b68d9338c. 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/JP92C2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab8f150553e30027ef369f55a913ac7bacea31aa467c78cd3199bd26ec9cbae. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/JP92C2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b13faeb50e84d35c34b607e3f25486700f852627a1db816c160133d8cc201e1. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/JP92C2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b8b02c35e7ad7798121c4291e2f260896e243ed7da922f2c1e402b140b65c7. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JP92C2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e8fbaa49e83a7a1a085a59d1328bf25d7a8ebcd9c550500fbd6e18b552184a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JP92C2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9ca2eaca2c537b85c8ee888034eab318653d755af797bc7d10613b68d9338c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JP92C2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab8f150553e30027ef369f55a913ac7bacea31aa467c78cd3199bd26ec9cbae. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:49:52Z), 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/JP92C2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b13faeb50e84d35c34b607e3f25486700f852627a1db816c160133d8cc201e1. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/JP92C2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ed6fa429b8104b09beda73f95fe9aa4b180f7d982db4fbbb68068fc4564cf6. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCJPA2420190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd401918653467f13203e9dcdeca4fae09cb3d0e461cc991ccb889a651756dd2d. 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/TCJPC2418859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd401918653467f13203e9dcdeca4fae09cb3d0e461cc991ccb889a651756dd2d. 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/TCJPC2418859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a73511872dccc41fe6bf8700b4fecc8cca6dc909fb6b2cc6b8b7c0f6c8dde7. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/TCJPE2556862.