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 0x7fc59bc95dd723f550eb74ca4276af469d754bb01abea0f2c022fbc07175b750. 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/0c15100c-eae4-4030-ba22-83471e5cd3d3.json and https://artists.proofprofile.net/proofs/artist/0c15100c-eae4-4030-ba22-83471e5cd3d3.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 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 0xdde1649ec3f79aa2bae38ea7243bd92a67414bda99fbf1b4f4c584e85941c661. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USE830954664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafa67a908ac56fee450af1e16671b5aca2f7cbe2df8a08894381f821113f921. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USE830954673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729e95e05a0e2eee9254dfc10e7d7911b4a04d6acdf409df06206a11de8c7cbc. 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/USE831516528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddfe750878e2376948242d627923944d9531bca27ce07b90cacaafdc7c39737. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USE831516533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce0ee81f24008dd9cd73d99ac7d3566db288aa7e7bd72e33513155a0be98f40. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USE831516537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cab822de2c21aec5a9f11e852e4b193e65230d3a8e1f966a552a2ee62d7137. 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/USE831516543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0749f8fb9b55500146ee5cec9ac6af28720c0e701208c02a94de21973d9ad070. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/USE830956178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695cd7fb70d3a1c84d45289cd14d0be0b3f67c5c8d23e40a690c98f1b41d7529. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/USE830956188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca58d3c14e6f40cb961d3beee94f36b4064ac12f1185971062039860381e79f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USE830956196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3c71832718f69fa20dd7c7086ef7db3045420f5bdae590ece179d366d24466. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USE830956197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b81b9cc34a91a3d3e33039cf798d025c1b6c29e8186eb5819bbab3efe3730e1. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/USE830956199.
Opening: Bombing Mission (From "Final Fantasy VII")
Anxious Heart (From "Final Fantasy VII")
Barrett's Theme (From "Final Fantasy VII")
Lurking in the Darkness (From "Final Fantasy VII")
Shinra Company (From "Final Fantasy VII")
Final Fantasy VII Main Theme (From "Final Fantasy VII")
On That Day, Five Years Ago (From "Final Fantasy VII")
Ahead on Our Way (From "Final Fantasy VII")
Awakening (Version 2) [From "Final Fantasy 6"]
Victory Fanfare (From "Final Fantasy 6")
The Mines of Narshe (From "Final Fantasy 6")
Yearnings of the Wind (From "Chrono Trigger")
Guardia's Millennial Fair (From "Chrono Trigger")
Guardia Castle - Pride & Glory (From "Chrono Trigger")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ce2956166b2b2f1a698fec542ec5845d02a0d7e79cf13dda99e8dd564d905b. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZGWW2030196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c9fc0503ae4b2fd3ea7fba72db7945f76984b12dd04691e04613cff570da29. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZGWW2030197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049e53d0b75c4481d0692771c77616b165381007794a18d16bb3523dc908114c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZGWW2030198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf481e1dbb888099534f66d8842c19588e5252e32bf3dc6086fd4e663239040. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/QZGWW2030199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840e969842d0ca00bfa36cfc9d50bfd488d07b8b799fd1310a611af2f2a43bf5. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/QZGWW2030200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42a5fafd552974ad3b00937227a3a6519afbeec5024e4300f31a4e6a5df1165. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QZGWW2030202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae9fdd5b612e8bee4b298380b3d63b387d50386a19f442c976ecbbe174eb835. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZGWW2030203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa115f4c1649b14c4aa545ee343cddd6b870bdb11834df6f75632f78d7aba2d5. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZGWW2030204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b1305549a8bf1225136aeb95c6250ecd8c50657bfc49aa647168ff5cbfe878. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZGWW2030205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e018ea32fc2ec8ddd78cafea624027c77faecf939dd60534ef3efe2206060b3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZGWW2030206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e4271ba674a96be5b700d52e715796fbf214ffd6af081d1947881c044ef441. 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/QZGWW2030207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b867061c2b37eeb9340bf308992cdc6ea9e64102492a2b97ed36b09e6f3103. 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/QZGWW2030208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aca0a9c963ba066bdc2350837be0e47be4ed01275288d093ec35c403b24ef1e. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZGWW2030209.