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 0x060400ee40ffbbe3c27ce36c519cf6f9925b7b4d64c57f4710afa3860685c03f. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/75fa3088-c915-41af-be4e-3bcb7ba2197a.json and https://artists.proofprofile.net/proofs/artist/75fa3088-c915-41af-be4e-3bcb7ba2197a.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 0xb9960a95c98e67457839aeb23346a2cc9ecd177cc10f34798f99f6e4d85451fe. Chain 2 (Bitcoin): anchored in block 957723 (2026-07-12T15:34:17Z), 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/QZWFN2362345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c5ef604db5fd39b817e72ae53aadea296b65e304472f3caf85a23bda43f914. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZWFN2362346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d40519f9f7542ddb1c72829a11bdce59e2cb6ebcf969d22456a6103c068704f. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZDA62314362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb096c50a7fea310a794ea7c11c44658c9e7140a090cceb374fc96ceb6376d728. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZNWQ2199129.
You Only See The Glass Half Full On A Wednesday
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368176b98b1ad9073ed76833c28e005dee9cb4272ce1d9c21303f8048c3948fb. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:37:39Z), 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/QZWFN2362348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11875a39599bc0d0db303080a274d246b8dbde807e8ab6e5395f4193d8bd811. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZFZ72261386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fde5e864a2dfc5b4e23d06430049e2b4efd5af564eb8a8393cd5f946a42326. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZWFN2362349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde38d1f3d4ab7aeb93f8804eff20dc5d8b87c6d68362e5ec1186ee3a4092baa8. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZWFN2362350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a66bc4da1f2e895d8695ece83337288762be1c9e33b100340e981a30ffd28c. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZK6Q2115984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3bf16d5e1fc2b981f1d521057b8b723a6343fd9896ddd76f4582702d1d8101. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZRP52560542.