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 0x9bd227cb51dfeec4b8c5e34ecfa06637ed7634f858cf1698e4fa449ee054233c. 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/4a31829d-fe96-442b-9417-b56be8e73841.json and https://artists.proofprofile.net/proofs/artist/4a31829d-fe96-442b-9417-b56be8e73841.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
D & D Is Gay (But So Am I So This Tracks)
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 0xea908db50157d325bffd9011e4e3df6f3dd603f0881a84c161436791c23fae11. 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/QZHN91915197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf365b863b7f6e5f9d1f513615c1a156c762636dc31c628488ccec8f75f65055. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZHN91915198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df030a97a8633cdff6340eb315461315f96e50ef95622968610559303253e60. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:57:39Z), 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/QZHN91915199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91753abf99f8e8bc8b8126a0589499058b8057c7cbe13da87bb2e1f9a88edd00. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZHN91915200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1abd435ea1f286be7a82f03bdef5e000af18ec481bf016657c829296f8985c. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:31:32Z), 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/QZHN91915201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a3ee5cad6925d027377aeb184abfb2398c37e8fb12dd32782759dc5f5a4455. 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/QZHN91915202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40533e68e18201de2ea8b837ec546d7165c3b0d7459ae0b21c5835c6a36b71e3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZHN91915203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab8be02f765d0fb4cc0c9dcdfda3ef2ac330805a2ae97682c19406a9870fe7b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZNWW2412275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9796ffb02647545bbe91c7f115dd6c81a1dd53838eee92188e28280c69f7f2e7. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZNWW2412276.