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 0xe871b8c57a6702e570ea27236d0e88df28ee0fbaada5fa7d812d5362b6f8d659. 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/a56a089d-b34c-40b2-8a5b-f6e65fc97caf.json and https://artists.proofprofile.net/proofs/artist/a56a089d-b34c-40b2-8a5b-f6e65fc97caf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Medusa, Chapter Zero: Prologue (Original Soundtrack)
Songs of War Season 1: Part 2 (Original Animation Soundtrack)
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 0x6b212d609794512d867a6d2078f3a02b7dcbf64860467fcf5031f466750a2ee7. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZFZ42062831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63595345dd839d7e3896c9c89a8002d16ce435231130b64464a6367899f88c2f. 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/QZDA62035947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b28f58231655334a669fecefabd3a7a7b6ef41a2403156f706be76f57d1eba. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/QZDA62035948.
Songs of War Season 1: Part 1 (Original Animation Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ee608b11c763149466bab58f5b87617cd80b3c3d3ae438f735ec382180c34f. 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/QZHNC1909589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc602610023c02b38dbd6c1e24e615c8f130a94b264d1853fbc498cf951fc5b. 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/QZHNC1909590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25a28907ce703c01ff1626f97352bedf7e52a628dc999c5154a3d93018cc3ba. 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/QZHNC1909591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1eece4d3c422501513268e57e4bd58b67d38426baa1ab431d2460bc04f23be. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/QZHNC1909592.
Songs of War Season 1: Extended Material (Original Animation Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7923e6f35ae7cc80582958bdffed13c4cc5457f73c7230b1d000642def57e7. 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/QZDA62036956.
SCP: Overlord (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150c72eaa7be1f8fab46662cedce8ef2f8462d986bac51b015811cebed06a784. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNWS2060840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0bc41f343aa4007895d721344e5f9e7e8a0a65f5732a70f96d007c97561926. 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/QZNWS2060841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936c2ffddecb002974d2f3f7f3ab0a5d50ec8eb1fd7deee71e474cc5d014994d. 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/QZNWS2060842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41e092caafaaf536e6588776efe1ca9374e418805e30efceddb9baec48b77e0. 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/QZNWS2060843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da099159326c3091818cda896b8e65b262553cb2056a2dbd2970d618eed1b50. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/QZNWS2060844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a97c3347ce346564e3a2b139a0eebe43a86a7d4f1118b1c7839b9213c7eb8a. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZNWS2060845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d90bc8689499c1dfb49e9b87a97d742227e42235455ce1ebd6c02f57476b75a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNWS2060846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf328b1bd22e92273f7ea21a41dd0bef8c723e5b44c9361545b01e08b7ff681. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZNWS2060847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1061b6b1ea5fbc6cd88ff11fdd0e76f532d864a847e287632b2984783acc235. 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/QZNWS2060848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a96184bcf372f1db5b034d9c5bffc40593934c017e4b730b360e76242ce569. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZNWS2060849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c38b18d010120e12ee5bac3911f1c9325e54c1fbd623fb307ac8cbeacfa576d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZNWS2060850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf96564d321b738666a1b2c3c306eb3dc5eda571d7ab6d0a9a3f507ac271a7ef. 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/QZNWT2079559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252adaaa9efb82c72dcbc85f11d01dabd6afb1c66a602106fe92cd8b514a5bce. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZNWT2079560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5db005855b9a36b4ef3350e50d895db63c534fa47427d1074d1d7d3218ccd4. 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/QZNWT2079562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc8e489f837d9dfcf3ec92d51a8e9796a71ef4a8fa26a5f213cacfc945c3ce2. 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/QZNWT2079563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae621d954ba13490186059d87774dae6197a57a67cbc148ac2d66ea36ae6efc1. 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/QZNWT2079564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeeb00f036f84f0be850855a81402197cc6080ba86e948bf7e77e9692e85d17e. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZNWT2079565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0e04c1b9ffe1dd8252acb76b3d03a7ab69a9029e7f9268f23e72f8a68496db. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZNWT2079567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a38cf3c6a9899e397f2adfd27b0d2f23005956a1e6f8ee6030bfc9675f0c972. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZNWT2079569.
Starfall (Original Animation Soundtrack)
S.T.A.L.K.E.R.: Shadow of the Zone (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff009d3afcc6e49d22cbbfb4e1a524026b01b778c8c3edc2241254ef5705f7e5. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZZ762467515.
S.T.A.L.K.E.R.: Shadow of the Zone (Demos & B-Sides)