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 0x6181003d5ccc408a4fada226a2916eb3cb6eb3d3c319a06e60bc529120844aea. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb8f26d1-9fd5-43f1-9ea0-ae5b4346a951.json and https://artists.proofprofile.net/proofs/artist/eb8f26d1-9fd5-43f1-9ea0-ae5b4346a951.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 0x66b9f08ca1e5789fdc73a72534ba13ef84f2d10dbffa8cc678977df135730d5a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMDA61484719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5212e8e88268e696ca7ea5cdafc20088213d9edfafb3f60a89ad7412ee98868. 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/QMDA61484724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81f98cd785a17a649cd46b26ad6d9c0f5cf58250b3843346d30fe9c48c7eb84. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BEP010590006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abf4f558aff1f5c25674b6e3f40d05a80e5306df0dbc8cb914c216c1016238a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BEP010590010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5e9ebb5e94e71975c22ceef727d74f65d0848e4ac3f94a5a54d4dc40504b68. 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/BEP010590012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637ec8c2dc4e666cecfe29f308c5d984b9b796803dfccfe52d6043646d452543. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBYFG1100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4598bf4963679e91b1d9583195ebea1c8132263cd18e63105473a1601cdf756. 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/GBLAZ1600974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd432d5155efb4b9e5638f69b46ec68533109b3a5f9e853ad196c1768e7ae7c87. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BEP011950003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fb70b0ed6e3c30029cc083162e7e5bf823a3ecde3232ec4749f58cdd10bb5c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BEP011950002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598bc7f53ee94255809fd7800140f899070b4c34ab2bc146386e8134483e6aef. 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/GBAJH0400638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a32daabfef5360d56b70a91b5cdb9f65bb63e2c8b34bb8f1b464e538de8ee01. 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/BEP011800012.