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 0x4c1e5fb0c654f3e2ba69b0e112ab0ee6b725ed6db608b16165f9c4b415ac2356. 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/d8f62d21-8e16-4588-a4a1-c573f0dfd106.json and https://artists.proofprofile.net/proofs/artist/d8f62d21-8e16-4588-a4a1-c573f0dfd106.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
VA-11 Hall-A: Prologue (Orignal Soundtrack: Sounds from the Future)
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 0x49ba1a9c017a8c865fab4ae8db4e641dc39533e91a9d017682448ef662673553. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/USHM91675885.
VA-11 Hall-A (Original Soundtrack: Second Round)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f887e62fda9cc6d2a6ba7f1ebdb93adb7c3d43596afab94b751b9a663ee3e6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USDY41794102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad327e34f50656b25c84cbf0c44c8bbd82da4084c2a1b7c99f47f8926fb2fce. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/USDY41794103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacc904936f7e34f4bdc0022aba901df79bb02d08a8f6de766478650b64b478d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USDY41794104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578ac24365c221ca44d4c1cdb52033b0858390c332a42dbadfc4826e89c9e1ac. 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/USDY41794105.
Va-11 Hall-a Ex: Bonus Tracks Collection
Base of the Titans (Sage Remix) [Bonus Track]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd60339a8a05e46b96615a6908904ad595ebdba59a3a97956ace86cf689d548. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/USL4Q1731481.
Lifebeat of Lilim (Instrumental Version) [Bonus Track]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049824ccc2bd73aefb0c9f097e44be5d1df7ccf7e870b45d60c9374647ae43ef. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/USL4Q1731486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0cb3f90bf9445be4063fb1afe010a15172e6e6e86dc8aaffc6db4838f0f738. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/USCGJ1939671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d75737aa8fc116c136bf1bb85561a2139e004142b4b79f5142a7a4480af03a. 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/USCGJ1939675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ba6a77ff8a6cc1cfff3c956da916ddd4b2dcea6d6e7830c0fce4813991d154. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USDY42222726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1454a1b2cf873176188264a5222bf41fa5212337fcf2d896742b6a5dcfb8079a. 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/USDY42365561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373f8a94d3ea507aad9fb79fcab30d76c363b4b4795ffb3edda0c2076b7cc57a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USHM22362321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3d871bf34e4f73991a85d8ad5d2dfde52fcdac5a9cb29dffe9fb3312947f37. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/USL4R2384341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c8dd78e0fc96e30ac78825a12ee64fb4b0b730033e3f211e3282a56ca9f640. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USL4R2384343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bafeb851c6aeb4690a147444608d0a509b50f9582ddb632a4c5fb05307e3877. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/USL4R2384344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb06b6a1bb5045b5142465bdafc82ffa121f574ffe458d18113bf2ed28ae4ba3. 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/USL4R2384345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8339803eaebb912530d471371a4d999abef09de51d3c8f36b6f2c059464fea37. 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/USL4R2384346.