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 0x621b262ec6e7cde4a9048580b260f6611a05f08124f98e04614f05ae1eb87b6d. 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/8bf04b94-ee13-4096-ac54-dd50691bcba6.json and https://artists.proofprofile.net/proofs/artist/8bf04b94-ee13-4096-ac54-dd50691bcba6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ACE COMBAT 7: SKIES UNKNOWN (Original Soundtrack)
ACE COMBAT 3 electrosphere Original Soundtrack (2024 Remastered)
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 0x4fe03d02ad4007b4cdc9d08e89d9e6226be4a863ca1d98307935ba9e03456ffb. 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/JPX832004804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca29d0c282ee99bbfa7df30e6d7e49075f4dc7a1582de9cc8e591f9b1a33d32. 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/JPX832004805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bedc4ba7a2398dbbb793e6c791980fc8e1280a0f92cd059ca6ee776e68bc5b. 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/JPX832004806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf055de02f3709b6785b575b3e2ac93deadd554fd7d159b3157ffba5ae940eb. 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/JPX832004807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee69e8e32a43bf1130bd21b3c11642a2240d8e5ac3388bd2b43f5fe19a429bd9. 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/JPX832004808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bbf313b0f99ab79bf628e1e7645bfca4f48139b1b4dffe1edbae873ab9c508. 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/JPX832004809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0616f53dadd3ffd36218408a51561ca5ee38d6bef5c08db433bed80bbaf2a19d. 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/JPX832004810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b27833e6092be38dfd348cb3abcc0129c7f5080ee3b8c5ad37f0ab5b198061d. 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/JPX832004811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afbfd6a382dd303eb737e81af61eaf454288f09cd346cdaadd131d559864321. 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/JPX832004812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db444626bfc4cc6cef64c461c0d3a26a2ee89966df884b65b21369a9ff354ca. 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/JPX832004813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f965a86fb784164b62a9d5c274baa1ba3e08e16eda202064aae3d8d10742182. 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/JPX832004814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc17e29a5c5d4fd77fa3c7e03af782e74ced2aabae983f8256103dd59fe887f. 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/JPX832004815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05a018c062a929f1df81edb792ae82b23134038c07cb796f7cf8db0baaaaa42. 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/JPX832004816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ad0591889616757d22dd29d52b5e3e188448c7e7e9dba3788d11655da06677. 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/JPX832004817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfcc4e722b9af354c7401a70677085f03123076441eb1993c73b14b8e4ff228. 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/JPX832004818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f36c3820b5fcb153c949ba638cb46bfa9916edca58b053441a967dd65779cf9. 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/JPX832004819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2bca3bc8d51cc22a6149d4216ba91a7597014e541da9c2aa82665a8d64df07. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/JPX832004820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620a93d86ab3e108f2e2ecd70695756ffe6f79d1ea40ed52fde6cfd9cdbee950. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/JPX832004821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f31f327ca50b94f975b4c6d6bb2717ad716e32f81818e92d5e666a21e0e9b9. 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/JPX832004822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3a3c57dd1712a483d7534dd35881fe321a2e51947cbc396c1d799b4ad533b2. 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/JPX832004823.