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 0x23541b8ff7fa0979a448a29e4dc551989541913bd88c17451daf445abc93f36b. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c23e6f22-4cfb-4ae0-acab-f20168102c89.json and https://artists.proofprofile.net/proofs/artist/c23e6f22-4cfb-4ae0-acab-f20168102c89.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 0x3a032723578125f47ee2a75641ad05ddaa96aeb86534316b056453733d02e533. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AUXN22106533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05beb702d55082613251d47fdf7a9619a3a608049b8129dfe9a25fbff7ce23d. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/CH7812221663.
Spiraling feat. Victoria Rae - Justin Martin Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ae10e5901b88661a97b52c1ffc503feadb0f511fd5a1cece15e96a26ff53dc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM6N22474429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e10599c8f0a67439994bbc2a089b7b316c8062bf5ffbe116fb6a6f85e153d5. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QMFMG2370031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d04983b30fb812ecfdc89c61f58e390f1e98baf21baee8c2b0a3307b83b34eb. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM6N22414414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24dcafdcc35f5ddbfe3d835cc27c34ce1d4595253e2b33a0e8706fecd4703e75. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:51:06Z), 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/QM6MZ2428460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ae10e5901b88661a97b52c1ffc503feadb0f511fd5a1cece15e96a26ff53dc. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM6N22474429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6214c526ba974d60a484cc3855e4117eb18c8f215ca4b7ce86f574f78b7340. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QMFME2420879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6214c526ba974d60a484cc3855e4117eb18c8f215ca4b7ce86f574f78b7340. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMFME2420879.