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 0x9892a35b449a69ddb31654017564336e90214e0733527f13dd7c403c9c1a37ea. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dd77caed-09e6-45cb-a837-919330f3571d.json and https://artists.proofprofile.net/proofs/artist/dd77caed-09e6-45cb-a837-919330f3571d.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 0xc4910d306301bbc85e348cc46235fbfa8842d2b5b67e45308ee89867daa8418e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/RUA1D2549757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b586ff17c96c9aa100a727606a6a7e81e35be8789f74d12867a0d53151a1d17. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/RUA1D2583916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a113cf265deecf4855f710ffd669c65c6ffe2499a9d6581b430bae990d8148. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:14:00Z), 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/RUAGT2503112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf525e866b3e620e4b061f699af7ff195b4b3b50a93d5b87140e26cbad35f0732. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/RUAGT2525302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fa8ddff68ea305d5997880cbe56f87b1c379b1d4295de0e6779702be8c9bc2. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:04:01Z), 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/RUAGT2525303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2839a7aae7265223906b6a53e62d3277078b63599b7716ac0feb68bcf79c863. 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/RUAGT2558705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396f57c50924c3f50fbb8b1eec4dbe6a5318dd61bd19fdcba7442c2436753256. 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/RUAGT2573342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e560a52cf323844830c64593aa313e2351f6363dfb7dde72e1cd0d301b8d082. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/RUAGT2584801.