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 0xf0aa0d97535fdd182d9b9db0a06130c7f9b8e9eb4b90c09a266d0d08699c3161. 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/cb5aaf99-38df-4726-acc1-e24f92eda526.json and https://artists.proofprofile.net/proofs/artist/cb5aaf99-38df-4726-acc1-e24f92eda526.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Title Theme (From "Ocarina of Time") [Piano & Cello]
Title Theme (From "Ocarina of Time") - Piano & Cello
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 0x11375fe8eae1cc59ca71507348486d6783303d53a4892e36823800fd5379541e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZPJ32291586.
PM Rockin' - Music from the Mother Series
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb522e153332f661134ad442b7ebf27ae3ee319bd932812d022e24c5e04b48ce9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:11:24Z), 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/QZPJ32390686.
Fishing Hole (From "Twilight Princess") - Piano and Cello
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b38b228879c5b1bb238d49006de1a749f191cff4c03cf987856a5c53b833b4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZPJ32159619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fa2704cd686746409f947d7dbdcb8e74c1487e2b30cbf64f17622e4bf3b0a3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZPJ32343650.
Heart's Lament (From "Octopath Traveler II") - Piano and Cello
Heart's Lament (From "Octopath Traveler II")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d19ea76f179ebf87cfaf1a3b7401b4f5148ed2be893221f7cf4cd151f4df42. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZPJ32263570.
Fishing Hole (From "Twilight Princess") [Piano and Cello]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915c51b3cc5c1a9e62057d6ce40030853225dbbec54484b7fc839f2dcf38d1a5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZPJ32331971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ae266e204dc50be3efb7d1910bef844be229fc91b0b59f6d7b3161763106d6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZPJ32331972.
Field of Hopes and Dreams (from "Deltarune")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1bfec83e7e1456199fc9b36a345015d3d39ea5de722d5e1449bfd3eb5f75b3. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZPJ32230562.
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
Peace and Tranquility (from "A Hat in Time")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf1937e26a23ac9a6cf40380f99db454d821053c6209a6756d96ec96124bd10. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZPJ32230573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf423883e1313c2d06d8a8a6163e41d5005f476409608d65fb11d754367784f3e. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZGWW2095462.