Guns Up! (stylized as GUNS UP!) is a free-to-play action strategy game developed by San Diego Studio and Valkyrie Entertainment and published by Sony Computer Entertainment for the PlayStation 4. It w
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 0x08554c00c0583bb7ff489c1b00e1f573bc9dfbcebac40c62ffbb7d876ee08df3. 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/c41b36b9-b141-40d5-bac5-39bec93bc029.json and https://artists.proofprofile.net/proofs/artist/c41b36b9-b141-40d5-bac5-39bec93bc029.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x0f9b61e3a7d4f2db8b6bffc8a1eab0794ee187386bab4968733252892ca4129e. 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/US4HY1000401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f19e2e8640c2ad7d0684ec1c8ed414e1dcba2545b582289d54c64bc079f63e. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/US4HY1000402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d9f4abbb35bdcc17f020a716f8c19b23cf7ecb6235ea71ae6ccf8eb7bbea18. 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/US4HY1000403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43f8e329fc82be3bf0066e08de3c6c9932ad249bd6424d3f2e7007418c948bd. 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/US4HY1000405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c40e229609e7e6239193a74968ed19d9bb28e3795648a856151de73785541e4. 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/US4HY1000406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63bd0508b51eb07ddf48ffc860243f7824fb9044886392fa40fe8a740b202f6. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/US4HY1000804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ffe003ac7f5922910f243abc52df5ff004f86f196776eaa50cabc747cfca75. 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/US4HY1000806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363e06d34a5418216b84441c7bb2e058dccb7cb15e0b756d29c87a677118ef23. 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/US4HY1000807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217f28095723408b5bf8991bbf7b1c2ad0f4d2d576f19e87d1466d7ac7d708ad. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/US4HY1000808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8f9b1e9ea52b3f2c004dc473fcb5931fd4051ea5343eb1bbece645bf599d7d. 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/US4HY1000809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdc7602a30fd9550120e37b8d7105bc46c03b1ae01d7965155d2ee99cc0354a. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/US4HY1000810.