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 0xfa09b662aee2a58414f8be17ea92ec6e6f9b5333a700ca9644ee294abf9371e0. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd61fc41-e84d-4b96-877d-6a21d14a6181.json and https://artists.proofprofile.net/proofs/artist/fd61fc41-e84d-4b96-877d-6a21d14a6181.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 0x8f3ca00c9ca14cd43aaca705362c0bb55dd8c64825696d74b872c285c300b564. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR2X41922262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ff1a82644fa16bb8b56dc9edced21956a627b305a0625b7e1dbddf0ae89713. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR59R1831918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2e12fc4e68cf2b8890164ffd38bbd4bce473b06ee9906b4ad8a4c22435b045. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR59R1831919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc525c0fdf2d2818a4f127cb1d5d6c05127b81829ddc945268441f711bdd04997. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR59R1831920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c731a26da47913817b552508ba46d48d678305a523b0123cac05e905c33f9de. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR59R1831922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ad8eff05644c452ad208db8ef4d2a69542e006a735e77d70c2503add0c3e1b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR59R1831926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde07de0b1feaeac6f1e705e3c0146e501c2f736cf8d1e9616952d87804fb68e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA092371025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971fd1235c4e4018aea7f7ecf5d608c16c04a17694c65b1ddcb3ec0aae2dce2b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRX872333574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf1b88db4205c60d209f67cfd883e9c7ab35c9b14cc77b8349704912eb6a2c8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA092371026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeaa0090c0472b6012e6a58bed5e08b734d718206f06fbcb5d8ccbd8e0714dc0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA052336974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971fd1235c4e4018aea7f7ecf5d608c16c04a17694c65b1ddcb3ec0aae2dce2b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRX872333574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96b822baf946d8e371ce1cc22f981be843db59b479e1a7cb24d20d672fab87e. 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/FRX452336425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96b822baf946d8e371ce1cc22f981be843db59b479e1a7cb24d20d672fab87e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRX452336425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e93089caa2b0ecadecde9c3bd8f61bd0a1027a4f322ae1461401ccc5baf713. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR26V2046257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf46ddc0b022ed9ce764f22fd2fe985759880b915f6a19320dda4dc109f38a1. 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/FRX201906484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe320e626765ef41aa54252a255dcbae6549ef39a8703871c0674a7527b009d5c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR10S2364478.