thumb|Archangel Raziel (Circle of Francisco de Zurbarán), circa 1650. Raziel ( Rāzīʾēl, "God is my Mystery"), also known as Gallitsur (Hebrew: גַּלִּיצוּר Gallīṣūr), is an angel within the teachings o
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec96483448c1a7e2f307240e5dcff65920160679d251409ed5ee44d94bb3b41. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4a737e67-286d-49b5-a361-30649ada1b6d.json and https://artists.proofprofile.net/proofs/artist/4a737e67-286d-49b5-a361-30649ada1b6d.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43bb755756cfa6a717e8843fdb7924513ce669eb78c6df4e1d038e75d4842f8. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/TCAHI2391311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6660a777e02ad42df421c754a333c18a1837f25c3a029d849e9ffda4b0aa9e. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TCAIR2492454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1ef60bb4c28b60bad41d9aab3b47681b0a35cd4fd909d32642eb875e7810ac. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/TCAFZ2245610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40be038227ae994c0beffe66aab2da32c4109f14668ebc5b7afb14dc0d85c7b7. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCAGL2268215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223cfa9eadd8951b70a254301acdb2c95fdade37c1281036e6efdd4acf8c046a. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/TCAHO2364878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac12355e72fc8569b56cc10fb06316e2ff44d2579d8feb9b23d3c6776c854b1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAJG2546650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173791b42651a5d3dec336a5e771a3c937f93bda2976ce3a97aa23d91ab55446. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/TCAJN2544662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde67995ffaa0c7bcb969dce45e78fe6db02aa16ea211603d6230e419b77e1a14. 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/TCAGF2275189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d770c8a85946b09337cb3b6caa4d606b9173ef26302786b93be3d61a3ff98d2. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/TCAIY2401042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ac891d8ed8c431eb562362be454cc3aea1a3cbde975aac96c26d853cf11cd3. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/TCAFR2107443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdec2e0b8241cfdce988b713f8843e665df3018547a95a223d9f30957c38324f. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/TCAFO2135819.