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 0x5ac43f2fda96f3ddfa6183484be4e05824f9733377ef4636a073660c93101b79. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b9fc7e72-2a1a-4877-9e64-77ad45e47773.json and https://artists.proofprofile.net/proofs/artist/b9fc7e72-2a1a-4877-9e64-77ad45e47773.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
「ナイトオブクイーン」オリジナルサウンドトラック
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 0x5e78fcc2ac04d966e4990d65dd231b04f54ef9cbdfcd93dcd3710da9478c9b19. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:16:12Z), 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/TCJPM2049867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d02459226512190055da3a4415e98a5ccc8320439d9483d555b7b8cb7dd5b39. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCJPM2049869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c2649013ae02977d5cc643886a221fa00d63f8d59cec5a2473e918c422d7b7. 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/TCJPM2049870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc17a0cb6c27f82aaf47b14d0080f071dec28f55fcb213d688d6364baae7e65. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPM2049871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c531882a38d9311e4f4a4bcadd4e82bd13419aa96e654083d40df8804629117. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCJPM2049872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33de9cdabde5570ffe9e2e6b796f106179db5ee2dd5cbd3c5f5b316c1fdc4147. 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/TCJPM2049873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb160fa076412f5811bdbbfe0d522b8105d44019241f3ea04bd2891525fbae38d. 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/TCJPM2049874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a43aac39614b261a9fc34828d015c4261975ccb692b5124ee38aee6e49e74c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPM2049875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4d544ea5cb7960de2086affefdf2972c2c70a4e8c28d919e2819bdda81958e. 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/TCJPM2049876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9765546513e18b91698cf64ba81b334c96889ef7f40992c2aaecd08000202e05. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCJPM2049877.