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 0x3645a337dd8341d02ded7bdf28586e49b9e1767abee26d3e78b8c6cf53583b78. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/077cf7a6-0c05-435b-8552-52cbd983dcfb.json and https://artists.proofprofile.net/proofs/artist/077cf7a6-0c05-435b-8552-52cbd983dcfb.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 0x4eeb163aa832dcaeb1a46b9795ab7341231c57fa7a74169b4a3b0bda82f7f925. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:11:48Z), 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/QZFYZ1965708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddbddadcc14e81cafaa1762e19cfa46fd6969068c491eb9de823609e7a34fa3. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZFYZ1901883.
Isolated but I'm Still Thinking About Her
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6de332eecf4cacaceed30eb3a714ea93f61c87243a75274d9cbe2dbb3607963. 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/QZHN42050974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e7e21152099475b6d9f95120cd146bb9c07ccaa7e890b025299dc0be6d0397. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:05:21Z), 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/QZK6H2076446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085dc6809ddfbdff6325c72611346762d7a18b021987cccb8da91e305a0bc0be. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZES82169141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef90df2d84becc0cecc89a161fdd2b451c07c9afcaaabd1e9289e3ae0f4fbfe. 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/QZES52241390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc756782f44c2e0327ed53a22a7b65de7a29ab62eb2e6c07f0b8db4c6b9816c4e. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:27:50Z), 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/QZDA42568986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f5b550531d70e319e52e173e7500a08b35e950110dc0904f1656b4eb76cfcf. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZTAU2578571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276d21aafed2e3e8ba74b2d5ed522cc7e822d20bded0f70ce42405f4932eeb52. 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/QZHNB2112408.