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 0x38ca05faf65f40f1e8d32737604784f859c2c3b4d368e3a36ca4bf841236d755. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1687a8a3-42c3-4879-b89d-9dfb73217ac7.json and https://artists.proofprofile.net/proofs/artist/1687a8a3-42c3-4879-b89d-9dfb73217ac7.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cab837fc61ffe62c5df6f4c30058a09bf8feb53dfa04b7fd413cfcd2904a427. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:27:22Z), 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/TCJPJ1952929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafca9a3c9a61771047bcc2514cce539c5919a91a99ec4e87fda232e23b22971. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/TCJPJ1952932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8bf4752d037b2d64e9ba8dd7c8e311cf02d14553d01a631a25cbc1c8096f65. 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/TCJPJ1952935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171193501f624c1f23bed644b26e0f479975abd15b4478cb7f6bd770f76bd716. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:46:50Z), 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/TCJPJ1952938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc92d628861e85a011f2bc5ccb4fa296423b7016fe644b5d2206fc4c764067d6. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/TCJPJ1955131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3887a838158e8e351aba949b9df1e04f007a1ded923a1e32c73fbf1d25a8b824. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:33:38Z), 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/TCJPJ1955133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68b3c0ce7e2714568b9506de16dc388d3cd4c2954d6a74621d3344d4b352889. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCJPJ1955136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a1fe03f38bac9ae9f14c0e6a8888a20beff07da1761b41bf23d28f42485060. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/TCJPJ1955138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb12ae533608091fe792ad5f25300561b072e99a7a15165be935764664e378a. 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/JPB671903824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f4abae36c9ade94ff1ea4da06697e97ed634a7dadb5e63b20f09ce240fa820. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPB671903825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5c6c80169e1acebb7e773187a781ed94d5ea9f1c7664406b4fa2b2f5394cfb. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPB671903826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5896b3f0dc26164e3ab72223880b86d2b8de178ec4ef34bdf548b7fd9b2c2e3. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/JPB671903827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f293a3c4db42e6d3e77cbb962e0e5c76d1dd2c628ad9c0877b6b33e4df7ceef. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:50:12Z), 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/JPB671903828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc90a46e2ff943c705e6e2e4ba87c24efc9fbead79eecae9f8ba8bbc36bedc9. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPB671903830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75659e7e4f74e2719775a11f704d874909fbdea19f815b7139ea8bc02d8cc83. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/JPB671903832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8c69ca53dd83db9e7b786f45d6e6c9a8bf04dea5707b00736a857a23500990. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:46:09Z), 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/JPB671903831.
Kanata no tabi (Live at Yokohama Port Opening Memorial Hall)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807015241fa5a98c683873e8acea8f14eb3220d400f65dab471c15fb2182e78b. 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/TCJPN2021762.
カテリーナの讃美歌 (Live at 横浜開港記念会館)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965203e6edd12f7741970cfeff56578704162a7c5f9b339edb45c1f72cb93e2f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCJPN2021771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f9539dd11011d610c86c797a959cddac8073b2665bb992a76b24680f41d137. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCJPN2021779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b69e21cad2c42c7919775e8dec14d133c21c505df59c21746b8fd3ee10a56b6. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:19:13Z), 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/TCJPN2021781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d347e5e8d32313f53aac5b199bcbff002e853ec91bd37650df60cfc8db2c1c. 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/TCJPN2021789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf308dcbd6981f227e6f5a4f12a537b19b1c31e90daca1020e194865191afaeb8. 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/TCJPB2487846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf193a54b5aae46153ea059d33957d5b4cddca4a4c6f059beffc8f5bd26818ddd. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCJPB2487852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cb6612af8d12f0816fa802339577973c79ca91037196f79809deaff0993f1e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCJPB2487854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6d17cc85f60179ec4f9f9984228494d6ef13a823900cc74ab45a654098fd34. 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/TCJPB2487859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd00257d7b23897d6c5e733a9ffc382e28eef4d24af4c9e60dc36a914a8d15e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCJPB2487862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79aadb7025d4371dafd6245675620f6bf20b3005b1369bf65d8bcfe8914d3de. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCJPB2487887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d13486e5d115b4618c8df343aec057ec2c55a6dfbf4ac0d8090109b344bc4d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCJPB2487889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9bb34e1c1f6bbe4f5fc119a004889d67aad7a45b74f2dedca0349ae130b665. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/TCJPB2487890.
終わらない森 ~国東半島世界農業遺産~
Endless Forest ~Kunisaki peninsula GIAHS~
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3d7f9426df3a97f5e90a8fa4b03713e77ed01f1bc196de738bad910fd4ebc2. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/DELC32401001.