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 0x10934bea1ea198c62d35a563d7e3ed19e78b0ef19dd9693ba04c837c3ac82e66. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cd8ca65f-e230-4185-afc8-7b4cb1f703f1.json and https://artists.proofprofile.net/proofs/artist/cd8ca65f-e230-4185-afc8-7b4cb1f703f1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Against the Grain (feat. Kill the Alarm)
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 0x634ff16d6c157a7eac4569969ea43f686bf9684791ad34e35d880f485ab66cae. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCABB1110730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6c8e46097a0d584aee4f67b3099fef05cfe3eaaf6507bbfa71c7118b002660. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM24S2201420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743eb6ce9995b410d4243450288175ce2b57b3c5d0bd38f95d56b24205d9646e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM24S2103585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7753d1c89efac05079bbe05cd9c2ac8b2bdfa3268d81c88105e8dfcb95d73a14. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM24S2200811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831f711e1ad1dfe9f4dc144aa54a441bf4fafe628210939bb643afe26fb8e42c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:42:43Z), 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/QM24S2105932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe038878a11ec546bf9ffd4109ad8358c08f0829ef0a0314987017baf180dabb9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAFM2172747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0e7242d94982a764fc62a4610d76d2ea7908f8660567922083aaf96a524a7b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM42K2101155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5f93b3dc6e2e93fb8936ef98da5667d950014634a679c50f35e5e01a9459cc. 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/QZKDK2092575.