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 0xbe15708a5867a812d5aa42d0549e8cde4248c6d711bdac9ecaa328eff35c5c78. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6dd2c2d9-3d5a-4464-8214-51b00d989b34.json and https://artists.proofprofile.net/proofs/artist/6dd2c2d9-3d5a-4464-8214-51b00d989b34.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Light Breeze Groove (Morning Mix) [Radio edit]
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 0x5d4eb95b53c54b167f6bc2d169e690778e5bc0d51dea56cf01b753eb7719de1a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZK6F2115692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cdc8af01cf60e03a452258d7c45a77b2172e0d2a54f18755358df47c053654. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZES82286625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c5a0a6a5287b3aa3a0460db24f9b3b1fece3e6d3980f02feaceab2e9e80356. 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/QZNWV2224291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b70bf20bc9afff85edea8e1c60e050d88687c551171c19fa92411304fb0980. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZDA62567427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045bf2d34d0473eeb340d2c0870385ac89b6791ae1138ab52012104fd7beb790. 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/QZES52532943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa471b9cf953262aafbf2ae6187f48b5ac337e76917e473f2335bc828a0d556. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZK6Q2583524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e3cdb0f220494cdc791f283756beb828eaeecba1a3c44dd0b4b3038755bfb5. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:05:10Z), 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/QZTB52523106.