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 0x80008663a9e0bd03c2dc48da464b7809ae7840685fad87a18b0f0411b2549172. 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/2fba6512-1004-4042-8923-f9e4a21d2c81.json and https://artists.proofprofile.net/proofs/artist/2fba6512-1004-4042-8923-f9e4a21d2c81.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Greatest Video Game Music III - Choral Edition
Final Fantasy X - Hymn of the Fayth (Remix 1)
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 0x806f4094081a2ba334c723728ba32d7c0c7a28c5b0431fde070d458606ea851c. 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/SEWDL6141627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3262bd0a0c8859a8d1409727f0ccb426a45bb4b390859dc375364a7966734ed8. 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/SEWDL6141628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319d7797b2c224f12210f09e745d323fc9fe604ab8b16c81477eb9b25f848dd7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SEWDL6141629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68c33cf2f3930c859ba6ef37e983cf949b4f0a880cbd844bad6c6a24cb8a388. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SEWDL6141630.
Final Fantasy X - Hymn of the Fayth (Remix 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7c89bb896e3dace3ece2625a147fddc8711025dda0e2cb54630ff8cc06dea3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SEWDL6141632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5805cc6befb5a17aaa067939f96b158fcd2bb2b8f203c075f323f944aa7507. 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/SEWDL6141633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0762074be410430c7e7c0da40537631a8f25566ec6c7c3662f6ab39cc0350e09. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/SEWDL6141634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92f7b58b80f70df1ae667b46134d584b4202df12e2ba5b4c0b3c15cb7f6df05. 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/SEWDL6141636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf92a919eaf802e8ff6ccfd469b0bee7c62b18e67ea72b9870942670c1a7c9f. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/SEWDL6141624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92f7b58b80f70df1ae667b46134d584b4202df12e2ba5b4c0b3c15cb7f6df05. 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/SEWDL6141636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879526737480cda9bd718d973b05da6e8eff437719146cccd1496117a9fa1b71. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/SEWDL6141626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4060bb735acb7fd0bc41edafdbf3a63a03fb83936bf96df3013d18311f9e85ce. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/SEWDL6141625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2286bb66ce1bc45204274efbbf461a4a0c58267acea882ae7b84a7c5c4defd8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEWDL6141631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90abed3994ab2ccf8dcedf3d18d6f73824cb28cd602a3dbb1c5e128d1f70fad7. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/SEWDL6141635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469030f4b1373448611e87d981fd9beec0d0ab2c217a802283929e8934ddc961. 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/QMFMG1393021.