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 0x669054943699ed153230e357250d764a852c073d64f6e662245969d6d926e8bd. 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/a597e3b8-b450-4ba4-99e5-34dc2360051d.json and https://artists.proofprofile.net/proofs/artist/a597e3b8-b450-4ba4-99e5-34dc2360051d.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 0x82b742af97068a9f46f4f39011249387a07614e9ac5f0fb315671ff085661281. 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/IEJIO2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2cd77cfe43f901d8cb33b07fd6477866d0fab1d9a77372c626cb356a9b1386. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/IEJIO2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cad6e4de5fa2429de917833253218b8d96903bfe70fd971b6721652987f6201. 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/IEJIO2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8e452f8d67461f6198ba3e236c395c71f99ba4222f9ac2ea949cccc2615b8d. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/IEJIO2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e78e1bb1cb5fbdbfdc8a1726112b6bafb47342a1799d03d253e3314da696af. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/IEJIO2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2cd77cfe43f901d8cb33b07fd6477866d0fab1d9a77372c626cb356a9b1386. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/IEJIO2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8e452f8d67461f6198ba3e236c395c71f99ba4222f9ac2ea949cccc2615b8d. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/IEJIO2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bd621bd11e063d031635e13abe3ca112ee6268ded4acee15be11382beacf8b. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/IEJIO2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63818c0996fcb48753689878420c9908b984638721d70aa5b0e173aa1557be71. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/IEJIO2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e2deebb9d553bba2fbc379f5d9162a812de8bb7e4955bdcf2885368c56d840. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/IEJIO2400007.
Love That You Love That (Stripped Version)