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 0xb717ce47fa02beb8f5ef416cd26ea18ae58d51b2c095eca7ab3c10e76496ea01. 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/02d87377-a9e1-4ebb-b807-18bcaf429c7f.json and https://artists.proofprofile.net/proofs/artist/02d87377-a9e1-4ebb-b807-18bcaf429c7f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Projekt Klassiks: That Was It (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 0xb2c11c817b0faf3c36d32a8b349edba2b6d773e3d35d7a3321405e51b48fabeb. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/USE830931785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504930ba60269f128c201c5919b805f4a55a1af4c9ff82409caf43abd1a74c2b. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/USE830931789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9fa716b2641129adc3e2b1d4da2b56fef07c2e8cd97d71a7d8402dae822108. 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/USE830931791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1060591cd84d2716f6cde45152b4c965ada9da880e8ec7e03ead7b293a4f536. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USE830931794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7285d5486c08f553df279f9632e852bddf070f936549b03dcdf8df5b05c6d86f. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/USE830931796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd1266847e679b6681237d0bec8bb5bc805939f1f3b84a0f744f002268f2952. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/USE830931798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03aacfbeb5c2f299b5c1fada45da0beaaa5d900ef757a39c6b14296285098dcf. 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/USE830931799.
Dire, Dire Docks (From "Super Mario 64") [Dubstep Remix]
Main Theme (From "Tetris 99") [Dubstep Remix]
Ricco Harbor (From "Super Mario Sunshine") [Metal Remix]
Gusty Garden Galaxy (From "Super Mario Galaxy")
Bob-Omb Battlefield (From "Super Mario 64")
Medic! (From "Team Fortress 2") [Final Remix]
Drunken Pipe Bomb (From "Team Fortress 2") [Final Remix]
Soldier of Dance (From "Team Fortress 2") [Final Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97826a606f2baa88e15d04701bbc8ba6fd748e38e6f026bd9435785511107d05. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZGWX2116724.
Battle! Champion (From "Pokémon Diamond & Pearl")
Mercenary Park (From "Team Fortress 2") [Final Remix]
Rocket Jump Waltz (From "Team Fortress 2")
Rocket Jump Waltz (From "Team Fortress 2") [Orchestral Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57c0d5a463e33b89536ff9336edeb6e9726ebf8a5ee2648d6c1594184948356. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZGWX2164919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5279637d4bf967ecbf28d4b4198cb3f1ba860852b8ea88ef3fe3d21e3eb063. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZGWX2155862.
Team Fortress 2 (From "Team Fortress 2") - Final Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a07d9a2428b36888f9d6dba00cecfefb42c2111aed8de4a2c6b36a36903f7c8. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZGWX2190531.
Playing With Danger (From "Team Fortress 2") - Final Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7a4fd7cff4e1ff6a8fd7791d27fec93a7200c7ff1a823fe26c3adae4edc8e6. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T16:28:12Z), 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/QZGWX2190532.
Rocket Jump Waltz (From "Team Fortress 2") [Final Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f5ff7985f66fa9d5a50f9e8e825fd8bea9a6b42b596959213e82c0bf0047fc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZGWX2164918.
Faster Than A Speeding Bullet (From "Team Fortress 2") - Final Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c6833aa1d09bde07f396571281d1e6a4c2acfedb25fb8bda2005b047cc71ba. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZGWX2190534.
Right Behind You (From "Team Fortress 2") - Final Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25b24e61abe6894476534e573a7ee8357bf160292d3ea4bb896166833e11678. 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/QZGWX2190535.
Intruder Alert (From "Team Fortress 2") - Final Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250503380cb981ffa101dd9dd3a928a379e4274fb5e56a885e766773c1ec8593. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/QZGWX2190537.
Drunken Pipe Bomb (From "Team Fortress 2") - Final Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebe4704a0a624c0a2b197a705d7eb874e842f5b18f8f2e14581fb506da1d611. 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/QZGWX2116112.
More Gun (From "Team Fortress 2") - Final Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72aa8b2ddf84fc16e326a23c2fc5131827b8d3c491eb81e6a047f7b433fe1622. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZGWX2190538.
Medic! (From "Team Fortress 2") - Final Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5906e444641706e5c28111c621a753d83562c5fd0b1dbea303a6421cff00d4a8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZGWX2104009.
The Calm (From "Team Fortress 2") - Final Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5581fa1c8805ef112db92cc0b500b7a3bd9d18b2b589d66cf7d9ecb0608fcf53. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZGWX2190543.
Robots! (From "Team Fortress 2") - Final Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c853af1477b69599248cee744ad61c56157e0461f029fb582562e5c7e3f8251. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/QZGWX2190544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57c0d5a463e33b89536ff9336edeb6e9726ebf8a5ee2648d6c1594184948356. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZGWX2164919.
Ultimate Bowser (From "Super Mario 64") [2016 Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96131f0ef1a391f7b036c382e7d5e20f05e9d5a22c37c06ca78da73c856cb182. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZPJ32194093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77bd3f490e3b3d675eccb476bb1fd0d0a45917ec9a2b6f4bf97fbc19dc6a7a8. 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/QZPJ32194088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0395fe46f981e4d941d55e99de3b1d9549d2c93589d2608fd3cddc861a7c123. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZPJ32194089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e3dab08fbfa55e0efeb58713626efa6d930fe7132fa6f78ae5cfb21a2dbeb1. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/QZPJ32195570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8cdf14fa54409cff0481ac99ea3d69773b7897a57670b15a73ccf86aa50a53. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZPJ32195571.
Watery Graves (From "Plants Vs. Zombies")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2979c6bdcf4260a8ff97b1d2675d573816a8ccffe76fc4d1fd6e7a329de11137. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/QZPJ32195572.
Rigor Mormist (From "Plants Vs. Zombies")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71127cafb4b7258104989cfa71cb8512b4c95e2979363be5c066c319df0d3dd5. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QZPJ32195573.
Graze the Roof (From "Plants Vs. Zombies")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63090fd23d466d81fca5fc8e2ee70e3f298f089ff6f08393fd6f5a3fd5531374. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZPJ32195574.
Brainiac Maniac (From "Plants Vs. Zombies")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe756d1be2ff7130c0320a2c9cccac43da41a30608bf3dcbce5b8f76c4f72d4b8. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZPJ32195576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5279637d4bf967ecbf28d4b4198cb3f1ba860852b8ea88ef3fe3d21e3eb063. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZGWX2155862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb751539f8631fce66f75886518d726571138d7f3f133cc46645f4783836bad73. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZPJ32195577.
Vortal Combat (From "Half-Life 2: Episode Two")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e2bb3f7fa3414f1fb2f55e2de2b70e47a4e515d9c7e8f71847a91737b419a2. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZPJ32246285.
Theme From San Andreas (From "Grand Theft Auto: San Andreas")
Soviet March (From "Command & Conquer: Red Alert 3") - Metal Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f3b04bb8c30daeeb267e00bdda0e91ef45de34348d71776f4a171681299473. 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/QZPJ32268830.
One Winged Angel (From "Final Fantasy 7")
Stardew Valley Ouverture (From "Stardew Valley")