Ska Studios is an independent game development studio founded by James Silva in 2007 after winning a contract to publish The Dishwasher: Dead Samurai to Xbox Live Arcade. Ska Studios has released four
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 0xff9c824bf724da524ffe96d90df985b59ef431eac1f833e0523480b7eb2a30b8. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69aeea78-a452-44dd-90d4-aff68a1a2139.json and https://artists.proofprofile.net/proofs/artist/69aeea78-a452-44dd-90d4-aff68a1a2139.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Salt and Sanctuary (Original 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e98040d8c2f35ea54bcaca24be1ad9e5dc6247eb2d92b9f4fbef825d5a3483. 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/TCACX1776921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4ece400a22f430e7c337d417af56f3bbe4c0fe11eefbceccf543d0af7f565e. 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/TCACX1776926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac4448dac24fb100c131f638cbb2b87041cd88ad2b202a23bbe49f21f95bab1. 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/TCACX1776929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a190437cfa872396cabc9d698f48247c97a312c5fc003bb6fceb6c3a413cc9a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCACX1776930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1ab4f1a20d8d0909f5b9c3544c535772ffca579d46a49c9059ee6ac2120f2b. 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/TCACX1776938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3508a6f430aa88525940b6f2360ef017e822850330bdd8d597f7510ac0e3b2cc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCACX1776940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d33dc813ea047311efa09b4aa47df5657d9dc0665f437378d8340342ba4bf8. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCACX1776919.
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 0xd58fb5cd2dd98ce6ed9595fc38fa5c7538a976c96ab3435b6a8fa292951553aa. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/TCACX1776931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9a6bcc7c0e2cf3ed8172efb35b6b12f661b7642396df1c7e2627210d1f825e. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/TCACX1776933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ef0bad30e1b2b2b5c78781cdd70522dc395ebaa262aa94df3671692bc2ec37. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TCACX1776934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8894a0ff4ff24ea75fee591c80ce11af7bd471c5e39f2c19b8ef2c7e02eb630e. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/TCACX1776936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd7e33640e62c0ca4461e1fb3719c182f0c23407f39fd7342c8edf0db96a0b8. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/TCACX1776937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e04b5e8cd7ed5e20299069a22f7e50f1fade6a13a9495acfcf45ea5257891c6. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/TCACX1776941.