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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d907e12841ef5ffd584e89487b0bc013b4167502af8d6c4fbb3d5d6a99bfde. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/116c1354-31c7-48bd-82dc-582996f55548.json and https://artists.proofprofile.net/proofs/artist/116c1354-31c7-48bd-82dc-582996f55548.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fight The Temptation (feat. The China Blue)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1055aa8b471241164f7e6ede043dabbc166344b8aaa4fd898956b4408ddaaa20. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZ93L2128651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb61801e3255e089e61252eb93b0a07b1210235ea9ce816bc03372e09e2ac30. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZ93L2132898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6306b6e02c6540fef77201a4aa2ad2619ec4a95079540229fb58e2a2f437a2db. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZAKB2163025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ae4f2605eec2c320e251293f298e1421660f42dbbed0cc3b2ab202cb08d4b2. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/QZAKB2166264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a78e9a76c7a0204aaf80b20a7b8d9312c70cb81aa7eba382bcaf11ec641cc6f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZAKB2203781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6de3acc649a9832967faab918f8d4a8aa3a6f644d491c5390e969cf3f9a64e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QM24S2303146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7209ea55119d207885862b14138d953f5d259e28b2dddce18434ba16d814f8. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QM24S2401065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d813cab1c84a6a4ba6f31b238ca8b862d18501ece3fdf27b045b55de5da7ac. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QM24S2402781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4720ad71a84e7af89c0348ac8cdd3561ceaeaf5150230f1421cb830233b09d7c. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/QM24S2403456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992fb96e5de1208c00951fd43e8bfaae0013def5e8b419e0b0892718a36ba78d. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QM24S2403455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2129cbc2e6246857cbf0039f88515177e9c909b3fca1892c079682a1ed8047c8. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/QM24S2403454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818d94a37596435c3a9b26d00c9e5d4a93cf4691b61cea0833f258c62116ad48. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZVEM2537418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818d94a37596435c3a9b26d00c9e5d4a93cf4691b61cea0833f258c62116ad48. 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/QZVEM2537418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22578fe74c599a2bea9c1079d4d256f58112f01802d91ae79bb1edba8eb00231. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T05:07:11Z), 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/QT4K42555319.