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 0xefbb25ea55c191562b316f988645563228749b2e69550d2e3e5fa96799833f6b. 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/4e61a493-85ff-4782-ab78-a380444bc237.json and https://artists.proofprofile.net/proofs/artist/4e61a493-85ff-4782-ab78-a380444bc237.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 0x543122f06ec603a0898316442e916e26052f167b9620c8a5f9769e7a0906e160. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/JPR502204234.
パックマン&ギャラガ ディメンションズ オリジナルサウンドトラック
PAC-MAN CHAMPIONSHIP EDITION SOUNDTRACKS
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e30a1dec3d75d0199f0677b7d2476806075285d78adaedeea93a2a8be1de8a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPX832003230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd46ada6d56d1039d17a99fc2c7869a85e6a128e9bdc8ef843f999cf5c5ff82e. 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/JPX832003217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2389b38d32fe9cd4e8c4f03788a98ea926248e6059eb2e35e9e60f88afa3eb32. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/JPX832003235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714218c48bc3710dc3fcddfe7531b3d97a2506c3d5c5fe95ce4973c8629468e1. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/JPX832003222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18f810624b277d5e31db89b12542a7511bfad862eb4542de8395229ba85f65a. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/JPX832003225.
PAC-MAN & Galaga DIMENSIONS Original Soundtrack
パックマン チャンピオンシップエディション サウンドトラックス
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff67cf25e3da616e269eb0a3a8b1305ee436e86af5cdc7d40b87e4ff1a33f386. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/JPX832003227.
PAC-MAN (Game Sound Effect) Original Soundtrack
PAC & PAL (Game Sound Effect) Original Soundtrack
PAC & PAL (Game Sound Effect) (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98645db6a5ccf59ac4f205d01202f31d9ddd3e53d93e50605b750f3ffe4c231c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPJ932000172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d994264f9766c431803dedd9921dd3a14691989d86ada18b3addc55b9c83b90. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPJ932000173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515f222ddf4686d7f4a510fedad9738ed35900a863b782bede829aff089cbf1d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPJ932000194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebc524b5fbf7304480ebf22bf5c6be0ffb0e33dd12b8987a7ab725cf7f5acc7. 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/JPJ932000196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21aaee5390cfd546cbf4da804b686288b6305e30f46b5bbda4608d99f190c543. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/JPJ932000197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a7a0cc803aedb44f4ece2ac93195839f6956694991dbeef46d83959c550494. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPJ932000199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3f9dc49c11779d4df9fc04ded7ee012770953d19980ff55701ded631e8d241. 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/JPJ932000200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5600c88a90e65cac0702af6ab902925e7ed54e724829d2b8705c36af774d734. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPJ932000202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb09fc6959058f3a392ef1d4e749037c4f55f6f8d073d547fc726c21dd5bf2d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPJ932000205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a533faff9d12215f5971b5e0cfa2817a0fd8821dc336245447785bdf6e22554. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/JPJ932000207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a870843f2d1a4a02e99cd2ab5975b78ae8ddb7c183f2dfd6e88d291d5fcde84. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPJ932000210.
SUPER PAC-MAN (Game Sound Effect) Original Soundtrack
PAC-MAN (Game Sound Effect) (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a3a55ff3870ae6c5b5034b9fb5b212a74cda8ea497d2472ad1a08aa068c1b1. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPJ932000146.
SUPER PAC-MAN (Game Sound Effect) (Original Soundtrack)