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 0xdcea41cd496fdcaed615cc45c56698a5d6941a05572d65131bd442ee72c3b028. 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/d61aac07-7359-4de1-a6d9-aec47d095581.json and https://artists.proofprofile.net/proofs/artist/d61aac07-7359-4de1-a6d9-aec47d095581.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 0xbfd29e802311027ba6b9c9a35febeec9a864244d2f9affa9813cbb419066d287. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T12:00:48Z), 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/JPCO01917170.
うたってあそんで！たかしのキラキラソング
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348bf58f7c84af5a5feeabb71b9ae807256ee7173a6678286deea43560af18c7. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:01:19Z), 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/JPCO01914340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3193f584fcc32d3ced1b89c74b02ed5492e8b04cef62dc8caf95d0ba4f5bd9. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/JPCO02012650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8372f03faebd4a62cdcaf28210f644aa4e9be94128641cc3c922c54b560dd5f7. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:33:50Z), 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/JPCO01917260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc9759b51f99f0381c865bec0ba239bdaf14f7c5152b2cd6b9dfb43126de276. 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/JPCO01927260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dcb98d1c4d3079227b3074b5c750b3548c7b473d77c23aa588b28199db1371c. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:26:17Z), 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/JPCO01914360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d48fa6fe1a1cfc8e0a15a3c7f1664def2ca5c5f4b19911667cff1bf6369c539. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPCO01917270.
パンダのきょうだい / みらくる☆エブリデー
うたってあそんで！たかしのキラキラソング2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fca011d9402e0604d8b49ef3c0b93d52bd7671bc4ea35d7995e8bd83a5b3387. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPCO02215010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e01a6abfa41c2e936a7f1c3e1d51c71dd3ba3f1a77bca0b54021c8b0e60ef79. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPCO02014930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1abc3f0692d2467ff2570ddb36fda7633c73baaf7a1da55efa3a6fbac164c01. 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/JPCO02215200.
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 0xff2a535d9d33f6bcf0cf775e4af14817c764cbbf540dd17b1408602897b140a8. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/JPCO02206780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5b2d0e4145184028258157302264b6c3f274457021ae2c883c36f63aa3f733. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/JPCO01927250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f4e9169258502ea22940380dab8626408102f8c79bf727f43d3ba6ba43c1f0. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/JPCO02222080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead7090cdacdf0a4407cdf8d3db2ae1b634100ce9d98816939754e81789a8fb3. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/JPCO02215030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781044c29bc04af51fa0f4b7d1af693c20d222db12257a19d582d607a8b6ca10. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/JPCO02100760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32be1a26cbbbccc6907b7473a05cac2158b5514c762bcf490b414502783ef984. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/JPCO02012620.
うたってあそんで！たかしのキラキラソング3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf180a4e520744babf3202fa05b64c9c72d34b773adc73ad7c6be564a0f1c64db. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPCO02230150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4ba131e8f64a29121416b8f1270d898aa326fdd803ff7d56f28e93a931b888. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPCO02233710.
たかしの にこにこワンダーランド♪
Wi Wi Fine 〜Wi-Fiマンのテーマ〜／なりきりもんじゃ 〜こんちゅう・どうぶつ・のりもの〜