thumb|Rat hippocampus stained with antibody to NeuN/Fox-3 (green), myelin basic protein (red) and DNA (blue). Antibodies and image courtesy of EnCor Biotechnology Inc. thumb|Antibody staining for Neu
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54428e397b9b98648370e40e1f4bbfdce2ca61fbea1653809a073d185d309feb. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be6c421d-4f95-4cb9-b3aa-e43c31ac75c2.json and https://artists.proofprofile.net/proofs/artist/be6c421d-4f95-4cb9-b3aa-e43c31ac75c2.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8686e920dcb2f710e2533e530d96b15b1f35cebf3c4e549d3211bb081fb79d03. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCJPA2437550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6477efc009af1792ee2dcf443de184c7f089149cd6b1da8e4a3935dffa5d0f. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCJPB2468306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f3c335bff0cc5e9d89588fcd99da3a28eacc2b90dcb53dfc88e18d47e176ab. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/TCJPE2509505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4556d1d41d0716e69ab84d29f50f63a91facb60479732624239f5ce64d3118. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:43:55Z), 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/TCJPG2566265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4556d1d41d0716e69ab84d29f50f63a91facb60479732624239f5ce64d3118. 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/TCJPG2566265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92654f9e95e0719744246aa350f79c47ae07077cbcd0256dc57c7149b953ff1. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/TCJPI2549285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92654f9e95e0719744246aa350f79c47ae07077cbcd0256dc57c7149b953ff1. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:42:49Z), 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/TCJPI2549285.