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 0xeee1f39eaacc4a2f2a254cdd006b97ae2e76c7d7903a8bf222af95b7fd5c945f. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/745ce822-019e-451a-9ff8-457d6ddec7f2.json and https://artists.proofprofile.net/proofs/artist/745ce822-019e-451a-9ff8-457d6ddec7f2.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 0x90605c6b31f5da5cb2dbfee57f03dd48ea75008885c92768743e7d08665653ab. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/HRA041787441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa991463952af01fb8b63a472b470b4367a129618d1f39a524cc057edfbee6d. 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/HRA041888753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe186a757a4f008a6ef0761059475352b0574294299ab103dde576f9163f5a69e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:36:20Z), 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/HRA041991201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c7a63d5621c9c9126f28009885597787968eb506757e081351f2d3c4e70306. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/HRA041990333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5925f60e1e5a5f5ca547bd94d602dfea5e9fe71eaa3d77dc63f5d8520ce9f2bc. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/HRA041889441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75aab8e83567e8811c6702b95c15f01b74ab3ad5d90a470ff21d08e562bfdf7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/HRA042093266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01dedfd6b8d15d43a5c3fc352a7d62075700f3f671243caf31de6fcb7de22302. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/HRA042200993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb18643cadd951c80e310acda784ec46f51ac80dbd23fea364549379151199a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/HRA042301464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae42cfb657f2a343fff9da219ffbea200697cdce1688e054aaf9aff8485176c0. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/HRA042401569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591f360471830fc40424a379eb4f78900f025e5333bd3af1ad3d10571ee3fb97. 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/HRA041888505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa991463952af01fb8b63a472b470b4367a129618d1f39a524cc057edfbee6d. 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/HRA041888753.