1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc591d9aefd68f96bcfd6f44feb5792623390101a007a87c054180d50adc0d7. 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/0d41f7c7-3a6f-414d-891b-8663e6dd1064.json and https://artists.proofprofile.net/proofs/artist/0d41f7c7-3a6f-414d-891b-8663e6dd1064.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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454b354e206ed91490decb7cea4bc7331f596d2d1c992e3bcc23f02f3266d4a9. 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/JPE452200005.
Arifureta Battle Song Itsumo Sentouwa Mendouda
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1a47359e6f521634707655f4dda3ab80be0464dafa4a265b59afa056b6f4f3. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPE452200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd332c9c4d2738af54ddfc8789b69f2abf66648d7e48a6685081044d82b5f8a2. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:19:24Z), 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/JPE452200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a2090f3d9e66f98629ed3c7e7b61665f7f73dda38b74850676cbb5e6fde4e6. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:30:48Z), 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/JPE452200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11243dc31233c3bb3a4817299975098461c061e6d2a0d47c63f4dc9a94f87a6a. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPE452200061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4930e48441b658b62b2873590a834f1337ba4c6da6b0caca201545118ed7bba. 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/JPE452200062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96a28a807cf094fea6e89dcc458abfd3cf4b56e8a501d67c9e53456c174ff1c. 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/JPE452200158.
Arifureta Battle Song Itsumo Sentou wa Mendou da
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110df778ab39e63e55e126b7b42fdbe9864176ccb9f8fc1aa26d8dc4c346aa23. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/JPE452300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c2f0badcfeb5d45601798070006a62e435429903f42f663e9773ffa8d29a7d. 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/JPE452300005.
Thank you for playing ~Anata ni Deae te Yokatta~
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08eb268016c9e357a9f6d14bc26a597f8e230347d18b29bdda2cfa93200dc02d. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:29:13Z), 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/JPE452300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e849d438151f81a402958ccaf61bf84086188930c22f847bc10006f44bd1e9. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/JPE452400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3284ce4fec672b33d40fbd310b5f55f2d78aa0cdaa54e9f3851a4c64f8d3c18d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/JPE452400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54fd1484167371324178c7f969df7eeb7f85c74778a8d0e2f66d643285dd001d. 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/JPE452500043.