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 0xf8e8b352c93a953983b07805335d35354fd7787bd249495cf91c704d19fffc87. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c1a34a9c-9b3e-490e-a367-12e8a119dce8.json and https://artists.proofprofile.net/proofs/artist/c1a34a9c-9b3e-490e-a367-12e8a119dce8.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 0x300e0b993152b0749ca783d2bf440678c9eeba62f1172b3ab816c4980aa0d781. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:45:09Z), 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/TCAGZ2351916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa903e860e4da6150a3b575d1567fd66e152dc33b0c89c8631c02e5655364c581. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:34:47Z), 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/TCAGZ2351922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e9c6661d95c11030234fc84500f311bee845671257d3c183120a282d7018fc. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAGZ2351929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1fb64a9d62bdbffb0e8448fb2517dafb67bad69041196a940cb8f51eff79ab. 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/TCAGZ2351940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e3a73eff35d3570882a7c8ec7472df57f3d597eb1770a0fa2c1cdb98a2b1bb. 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/TCAHP2399975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda562c90b8b2b142a302bea1905df5754e420e1a2c09c49b063bbff0183a55a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USCGJ2570363.
Morning Groove / The Windmill / Green Meadows
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a621bd943a9c94c0a6033d006148030ed9a07a388b57157ce37af928fb7571e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USCGJ2570364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a85c8069c927c73d3619a3a67c8a3f7e2d6127fe976ce5423f6c7a3143c3184. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:27:11Z), 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/USCGJ2570366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e08d06bdce00857a50dce996a2e04ddeaf970d6677faae5332e35083e11a798. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:27:10Z), 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/USCGJ2570367.