PayU is a Netherlands-based payment service provider to online merchants. The company was founded in 2002, and is headquartered in Hoofddorp. It allows online businesses to accept and process payments
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 0x16af214f08163e98422d91f77d3e1947ac23b0a61375a096aefcfd17375fca3e. 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/35850407-8cdf-4a9d-a841-fd88345be7cb.json and https://artists.proofprofile.net/proofs/artist/35850407-8cdf-4a9d-a841-fd88345be7cb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Riding (Day) [From "The Legend of Zelda: Breath of the Wild"]
Ashina Outskirts (From "Sekiro: Shadows Die Twice")
Riding (Day) (From "The Legend of Zelda: Breath of the Wild")
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 0x449401f40b16247d84e489fb460fbd01d433324000a009d1fe2b7c810d9f82c2. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T13:39:11Z), 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/QZ22B2099448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449401f40b16247d84e489fb460fbd01d433324000a009d1fe2b7c810d9f82c2. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/QZ22B2099448.
Secunda (From "Skyrim - The Elder Scrolls V")
Stables (From "The Legend of Zelda Breath of the Wild")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e18b4c17d0240aff77a105a86027ed6a950fa88a8244b94946f56c9f35c546f. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZGWX2105754.
Minecraft (From "Minecraft Volume Alpha")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20d5e865a063c110817bd72b0ab2828de2c351e826e62a1b519cd4f2601a0c2. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZPJ32197392.
Mice On Venus, Pt. 1 (From "Minecraft Volume Alpha")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375cc75f883cf5d53aaaf17dd6fb332ef31e7397112be25f4c7c5f240498afae. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZPJ32197395.
Mako Reactor (From "Final Fantasy VII / 7 Remake")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913f8ab9633949e16e0270d9798234719fb97daafd1f4bfa8e28aa1793a651f6. 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/AUMEV2540522.
Grandmother´s Haunted Cabin: A Halloween Tale