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 0x790da4a0d1afa613e795949fb27c1bdefa7f3ad368d8c5963d64533209df1139. Chain 2 (Bitcoin): anchored in block 954040 (2026-06-17T03:05:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e674eae-6cc0-49e9-ba06-915bddd0eff3.json and https://artists.proofprofile.net/proofs/artist/3e674eae-6cc0-49e9-ba06-915bddd0eff3.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 0xb2b62bfb39fbb72bae11b75348aa53551eb82f91fb92a117601d467a24ac6982. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPKI07148045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb151c8f5683392df234994be1874db7ee79c2c11e53bbe129ccac1481fc692f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPKI07047956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a716b3429c61a024dd3f635a2b33ef30cbcc5b6b261ec3be50664d07af09d9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPKI07148046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ac743afd18e594e7f4a2e2a00366d970a19feb1970d518589bb3f0155cc729. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPKI07148051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e42843a38723526b6708b2d35ba84ac14c35eff454c5227ec3d866af703bb3d. 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/JPKI07047958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503f83f524c98b9c2a679b53a93a9e470a3e6fd481668f857cede96702fe11dd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPKI07148047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5979e859722c0977925a79b66f3ac0e5ffd4985b5f1b1e86ad4d5ac247c196b8. 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/JPKI07047951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41591204c8304af01f1eb40b74296d642a05d5159f476b7be920e6501c1a166d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPKI07148228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b075b2d4edec9b146369fd21504f6c5a21c7bae91186f328a91043f5344742. 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/JPKI07047957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcfb897b9840ced81f6e30887c5a8e919b4ca64ccbe74886c308ff9165f69829. 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/JPKI07047955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3fa19cb8ab82a24fb3e1ccf09289ecab31160b5e3aed4f682d5a871b540074. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/JPKI07148048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ea9f6fc5ccd39660d732a99025a2870605b8948686f8c96291f9761884cee3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPKI07148416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf7ad581c76e781a2f89ee6d8e7d15235a74298487761522c6bc771423df3bc. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPKI07148230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf9f8ca0558361454fee003059167f747c3d73e36840a0cf1ea7359f566d027. 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/JPKI07148415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba75a9515b222ceaf5212aa15b2e0054b8404e741d2b425cdbb9457d57fd3d1a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPKI07148049.
自転車にのって(ファンキーヴァージョン)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49220a71eab621049538e5cb5a80727aa659988c2570d9c00a2406bd773759dc. 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/JPKI07252820.
ウィー・シャル・オーヴァーカム
小さな町の小さなライブハウスから