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 0xe64b4e89b3ad507bfa7d4a0f056ebef10f8fdfea033469a525e072dab6c6bd37. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2de4ce75-2e68-4f07-9a63-b220688f4c4c.json and https://artists.proofprofile.net/proofs/artist/2de4ce75-2e68-4f07-9a63-b220688f4c4c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1990 Suite: 3. Nothing Changes - Re-mastered
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 0xbc6624d9efcfa9e85f5d0a87599bd7951eaffc4a1b160ff153ecaaf59d4658ef. 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/CA2WG1813547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8352f0e625957f4ba4e6c3f62d83152b034db01201877e9ecc89c4d8936be752. 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/CA2WG1813549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffac04cef9eb5b17e91d68057f4f4e1f23c68ab6e20091f0ba6c0d8b102db558. 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/CA2WG1813550.
1990 Suite: 1. Now Or Never - Re-mastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da6ee2d725864d4409eb1131cfa252fcf72a2ecc8c1e08d3a17ced53265d957. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/CA2WG1813545.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
1990 Suite: 2. Feelings In Exile - Re-mastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9944c564d533f58a57b1575d5347f4fee29b268a2de8400d29cdf9ba9946d9. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/CA2WG1813546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc27745696e4f9c439760d3030ba02e5352ed0e9771eb44d3c61f22927d7019. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/CA2WG1813548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69304d48ec964ad48ba9871f1d8cee69b204c72e2f2ade4e22b3053b16ca9bb2. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/CA2WG1813551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958b0f2acf0e127ea230ecf379213508c1148529864f7e0b667cf10f8fcfe115. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/CA2WG1813552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8783370c56107a6176fa68383f1c88c2f79ac4c9f02583d5c5d223859072ad. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/CA2WG1813553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57f2fab19e45a9d29777a341f8ebf7cb4e4bb65073c33b3288d817e5b65de00. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/CA2WG1813554.