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 0xcaa1f0803796f5d98866ec19dbc97d421065c128fa63145b0cdd122a3c89aae9. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32a0dc8e-9b49-453e-9fc5-9b6c0199df16.json and https://artists.proofprofile.net/proofs/artist/32a0dc8e-9b49-453e-9fc5-9b6c0199df16.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 0x120ab9cac1a871aa8f4686c568f0dce3e528637eee51a563a216501f76328f5b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ESA011927386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f131db55a544cec75ee4158889966fde544a61e1f651bde1049036830304ffa. 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/ESA092311161.
Lowkey Vibes Vol. 02: Backseat Freestyle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ffe356c90f5bc754c19701cb2af23083e383bf5a2e6b68952270510e847661. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ESA092407472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa5eeceb47b26e202638847678f85546f174874f6bc836105cd17b74c191158. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/ESA092413482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81769f5d585ed0f1e260803865d810bec97b6c5c5dbe1adc36e875067c6f53a. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/ESA092410664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcb11042b573342a08aeafca13711e7b9b73e2b140703776a6caaad29f7bcdc. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:04:53Z), 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/ESA092412747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2288badd71c64ad61bb79b086b1d53c2e6391b79da414217f1c8ceaccbaa4f4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ESA092508632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbb820cd66453d6e23957a09ac2fbf99fe774dc64211406ea6872afc11a7cb6. 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/ESA092512022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009047530c8dcdf445349252d71965f6fd1700def737bde28e58a39ff5018525. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:43:08Z), 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/ESA092512025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee890a9ae379904601391927c96608c58ae668dff0af8fb3acae4ecc70910fb2. 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/ES71G1602536.