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 0xfdc54a0c24f7bd9c12d8fad701d1067652b24d8ceb2c7aad6ec9c19faf02f954. Chain 2 (Bitcoin): anchored in block 953783 (2026-06-15T12:24:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4f93524-6f65-49e0-9ace-9fe4b8557719.json and https://artists.proofprofile.net/proofs/artist/d4f93524-6f65-49e0-9ace-9fe4b8557719.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I'm Not Feelin' This Party / Rattlesnake
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 0x05014dbb44057b917d5b897691a1c4144a125118c9ad508f1c7479d3faeff216. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZQXU2100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4f4484a65e6d72a62902466089186a7f84737cc4d6b7fca3008b486b8f4548. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZQXU2100057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f9a80e51566d3ad362c1d7530b1084c86cd05ccb8c9f58f181a289519f5e92. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZQXU2100132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5a05865352d3d70105c44f390bd7b8cfb3d80fbf7332c21e3484f1e01ab349. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:22:44Z), 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/QZQXU2100133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c4c56359e5bfc50f60eb58c1204a991a59e571bde9788c01b929b08dd58372. 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/QZQXU2100128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8293160c3e79b1ef307910bda757deb53a82e4d2cafc85d3fa5edfe51e622a. 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/QZQXU2100135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1480508f8f871b98e86f3723e676fa1261d3aea81fec8194e8bc43479670a394. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:05:11Z), 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/QZQXU2100129.