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 0xe48f5ac20e9dead2ca4702f24eb301fe95a135b1690190aae1cd857fe29aca7d. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ebbc0bdf-4b79-48a8-8733-a22b809e2173.json and https://artists.proofprofile.net/proofs/artist/ebbc0bdf-4b79-48a8-8733-a22b809e2173.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 0x721901b23be1f6d07ba402d1c3bbe893e545e22af0f8ac10afcafa60cb5abfb2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FIKTA1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c51688302fb9994b63dd4204e009b364aa0d7993a48bf6739822d0dd4e7794. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FIKTA2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc8fd3cfcb97fee84eb615eedfd0601ff2df8ef3f6512e52db0374c78812a64. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FIKTA2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc121bacd980bdb8ed6a18bc70b5fcf3d7e051ae286d94c8d10653ccc9b393dc1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FIKTA2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026d4c21ca669a99876c11667b9e72a09a9980ad7c053d00f83dc5782beab4ad. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FIKTA2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25f8e8879deacebeaac29333a2c0e5ab54fdc813f2c0609a528dff3a8b577dc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FIKTA2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8dbd8adc61bfec9c6f6f8ac282b8b72b55f4daea40313e3d52d5543f070d7a. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:28:08Z), 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/FIKTA2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721901b23be1f6d07ba402d1c3bbe893e545e22af0f8ac10afcafa60cb5abfb2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FIKTA1900001.