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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e54d6140f37f4881fce8a5b0cc4e159b8eb90a260fda2e884e5896d9b2eb19. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d1c36bf5-1e49-45aa-8aca-b2874bf0ead9.json and https://artists.proofprofile.net/proofs/artist/d1c36bf5-1e49-45aa-8aca-b2874bf0ead9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
わくわくキッズソング－えいごどうよう１
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5797c009c365dfcd8b3d07ca1c36a406c31d4336e07bf82e3cd64be84f92844a. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/KRB361210572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00001c46e8a54f777fa177d349bc2aacee373baa6e15eaea4390481283ef9b3. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:09:03Z), 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/KRB361210573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77490155b16076899382f7a73f01b3e2a61c381936a74c4254bcf649261d7f43. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/KRB361210578.
わくわくキッズソング-えいごどうよう2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8e0e23cbdc951b5b6ac1a56f3e1c6624dba19e500c86c18bd00da5a2fb5d48. 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/KRB361210511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51492dcb67b746fe699b62ac8ee110960e08457f9035e88c6ec2dec33150e676. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/KRB361210512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732b598674e5a7ab81dcf0842586d4858321ae39981928b7cd06f74ec252e60e. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/KRB361210516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecc1fad2f7f6df5b54339c9838800504df2ff4932054243ca3e406211b1ad39. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/KRB361210518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079db6efb8478daabe20d9902df7b88c8f8f120c75524450f404c5727e8f2213. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:25:40Z), 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/KRB361210520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198f1fef72e0d1e167dac60bb036f061afe47f7deabc9426578816ef63e1a724. 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/KRB361210524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210a0dfa6880a923c680192e16b1ac957c0fc961e2b01ceed4a630b00ab4383f. 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/KRB361210530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8a6a46d19c61447a81cb3f23fa6fbeee8d791978ac1cd2530b8cadb36843ad. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/KRB361210533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0289647fe23ffab2e02ac1e0f2562eed63ceb9fa91de5a31d8c69d172cda6b5a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/KRB361210534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb00dc88c12f4555abd59277727d4b0f9bdd2c97bed2648c258c31f2f1bf252a. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:56:05Z), 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/KRB361210548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a38e72d4b00630fedcd29e07dc877db6f86f3355c629c50a032de6e504608e4. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:48:32Z), 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/KRB361210552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9af56b93e286f14a5b5a6439bb64c2fb3c92a5d6ea065c043a8c5bc9418466. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/KRB361210554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e408eb102deab4125c9bb5070cf2d94499adde9bbb9b8eb09fd132ffa262e9c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:26:07Z), 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/KRB361304192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04844ccd47b73314586575166772b99c0b4c35bb7326e2a17d82651a0de87323. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/KRB361305118.