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 0x22aaa04f5e50e7fad391bd05ea8830bf8d872eed57b0ade729b6807b0e964bf8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d6fff93-9f90-4061-8604-8055a7316ee5.json and https://artists.proofprofile.net/proofs/artist/2d6fff93-9f90-4061-8604-8055a7316ee5.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 0xc6a351091e7a94cf9dcb24afac3b18a0611cf55e4904468d17bff957cd0a635f. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QZTBA2226397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3333192ba583f228f138917103d98a1405ed451dcdfc4afdf3047ab5635e6102. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZES72377440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0ee5abd96e2b14fe1e1d356ccbf2100d0c7dfaa34fd72ef8c92b111a9c712d. Chain 2 (Bitcoin): anchored in block 957737 (2026-07-12T18:02:09Z), 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/QZHNA2380229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc71a69d4d437c97665b86c16060593298d34817e23a916db4ce65f66aa8833. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZK6M2378045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29177b6c4b6a214a34f6813f8248114fb0583abddab0c37034d8d6fdce88fe14. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QZK6M2378046.
i went to a shoebill concert and all i got was this stupid t-shirt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1b2d47ed8ea63989d926bac0f37db334b4047c93e6736099183f796c060e26. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZNWU2316423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe642e73c1eca173c198d943d675e513a7b4f08b4968b4aee05bfcd1a7b24c5b0. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZTB32399145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc639161407604bda75bb9d0eff4356bde610dd58aed0c13691ac2dfa7785102e. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/QZMEP2424065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087493b428acdd8112ee0d318226314af106c601d2d49270fbd6ed9db0432f13. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:48:13Z), 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/QZTB82428841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a80dc4d574bf2248dce4f9448ffc7c0947b47504b094fe18877f92d75aa0b03. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZZ7L2410681.