1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x307e5002f16e376185c0e4969751936c21aaea0390caf8427abd2547426a0581. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/94f22880-635c-41b2-a14a-7beb6809947c.json and https://artists.proofprofile.net/proofs/artist/94f22880-635c-41b2-a14a-7beb6809947c.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 → block OTSBitcoinBlock must exist at that height 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 0x18db91c38042fc99261a1e6bf9299062a6f37523ace314682a5102b1ac9304a4. 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/TCAHR2320176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebaf3c779c8cffc76aa9653aa5a699c9c58f6449a6e76c2a4c5060beb01b9cb. 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/TCAHR2320179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b03cffed5cc0768f3b7752b57948fd12a0ebfcd38b688b177208d6e9de1e9b4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCAHR2320187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1105e528c69b7ad34874b1ca679571babefd790fafe00d6402d07d46ba4e67. 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/TCAHR2327918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d67a5ce27b9c3450cb5c91529a69900a3f1dc70d58a336e4c507443d0ff8079. 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/TCAHR2327803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f64e60299396fe19c270818db289d847ec412a43420b452dc723df6a311992. 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/TCAHR2327814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55db9e02c3380e8374dc508829ab3a79a47bb5cda0b143291cf7585caf89a06. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/TCAHR2327822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d0f0a01be5fec13d7d276641178c1c8e761299034346bb561409e4a1cd368c. 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/TCAHR2327845.