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 0xd26a6bac248c5b3c2f04acebf3a1c2b5b8b13518d941f7c8261568f8bac42bfb. Chain 2 (Bitcoin): anchored in block 954062 (2026-06-17T07:39:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/450bd518-cf30-4299-80fd-b5c6ef9b9687.json and https://artists.proofprofile.net/proofs/artist/450bd518-cf30-4299-80fd-b5c6ef9b9687.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Helldivers 2 Apocalipto Wars (Remastered Edition)
Helldivers: Extermination of Merida (Meridia)
HELLDIVERS: WARRIORS OF THE COSMIC FLAME
Helldivers: Titan Clash in the Desert Sands
John Helldiver: The Infernal Exterminator
Helldivers II: The Last Clash (General Brasch vs Bile Titan)
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 0x4001cb02c32dbbc6962c8a2c11ec82d816f6210a7b3b8bced70d9ef228279018. 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/QZPLR2594325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea85c90b473bd7d7968516e9e9fe918e5afc7cde59fb2527b14655134e75bca8. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTAT2524178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b58b2d443747e2b6821cd914308f1d681e60c4735e425f3299d55ae181be86. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/QZTAZ2532844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80bbba035196c0f3ae994ac8330b379d687b154946a89f11fe981fbec56cd4f. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/QZTB42515597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cb01db43aeb5d52f9085d23a3fb57b449f6777690bed37cef1c9bcdafd7772. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZTB62590848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad0a06f58ba640ec09ab041a5abdc956ed00d5cbc88862b43e917395c97b9bf. 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/QZTB82537938.
Helldivers 2: Aliens Bastards – Songs of the Second Galactic War
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55350256af6d6d185012bd050d9f7dd4575c834795841d9128cf0b252072d1d8. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QZZ7Q2562744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f9e8ac3730ce767ff25901590ec6481358c028aaf03cef96745c71a4e388d4. 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/QZZ7S2596190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2675371f40ec1b6bbdaa8c9aa7381de6820742f6cf8eb99e84a761781bba6b2a. 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/QT3F22587199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104879ee6551f4075e0063f908ab3bb2c08b74d5a7ec434b666b20527c2c91d0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT3F42503027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a92e39bd7f87b468d05489861bc491d3e54e268664782cbe89bb586c836b5dd. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QT3F62522610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44c73749b48826d564440e39e14c3e3bb43f88a540cdf14cc673699b2bf22a7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QT3FH2588269.