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 0x46395a1086239aa63b7b7b051c2fe80a2b34d01230af9d20c0973fbd6fc0ee33. 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/e01350fc-c1e9-46df-9b83-fdc99ce34098.json and https://artists.proofprofile.net/proofs/artist/e01350fc-c1e9-46df-9b83-fdc99ce34098.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 0xa7db57f5aa6acd0f8ae9ce437ca786ab6de6ff01151bfe425dff5c3e81aa1b57. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPI311300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202a73592f88fb8a0891306325355219ef8beee239c91d22d09d2cdd50e4faf7. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/JPI311300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a66ea6dcf007e92c629e2d3b89f6705102710e4fa875ef4ebb2b58ec287e87. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPI311300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720606a7243a8b607b287e9a1e5a360784aa4c7854bf818af1f2f0058b0a0245. 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/JPI311300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5991c84ba3d2bdb8d2eb0a45376c6f4d056f0519d74d9fbc58fc5d6c8708c61f. 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/JPI801700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65dad6bb363d5e504d9a332ed08265d3d38df4101adb1680bccf47bb3a99e233. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/JPI311900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16dc59d479ed7aec3ed9121b9574db6565f48f3fd8cccf10acadc0999ecdf74. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/JPI311900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a0a024485bb88ab7ae8e33217e6d7977a733775717e7772a3ca39e75054dc5. 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/JPI311900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532d51252cb988fe7e712e55c2f25477574d432311ffab746f21014b501a3080. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/JPI311900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf570c0dc37e98f79a4f1be34b37c06f26f19815962dce2f5828bab330cfb318b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPI311900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e38bf305779ed7b83a144287acb1930fa119d293ab66bf51886378c5047ffae. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/JPI311900006.
ロックなのかロックじゃないのか判らない男のロック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d5caa012e8d9b6d9547041b3cff0de2b7ffeecbfd10a6c54cbf9293086e0b7. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/JPI311900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea2f7445cbab30bac65c534f5d22d5de09d46e379e1b046ae086d2be578d93d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPI311900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7ca01a33d0c11f527b724fff8a73af575fb7b4c3ecf76dd14e794e1925d237. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/JPI311900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7d98f52a10adb1bb91bcd6da87b9036e36c9f99f4b78091764d2313249f81b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/JPI311900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ed9b05ebf781e58c19ca1281d4f63e4ca7da4e08b33b5da7c8c2f604607714. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCJPA2420360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8af9ffa5fb834192e12ce8d0bbe442ee0fff8540f1068627238707f9af8c05f. 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/TCJPA2420451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ccb36717d2f0ae15fb8f216e1cc11c480ba248e9040fae29bb43021744a837c. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/TCJPA2420456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaecd80a9764604c3502a1520e086f5df1124b2caf3a710c52833762fdc4d9c8. 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/TCJPA2420463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b0547b8015d4842b0c08289c3526c3c9876dd48e0350970cf9cd3bf69d94a3. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/TCJPA2420476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2faf45c6153a641f7cd717992c30ccbf3ee03025533e80f84d50971970a403fa. 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/TCJPA2420491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840ff36b59eb8e2e9bbc22de6d8854f62c06aa81650e2ceb98ac72ab849d178c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/TCJPA2420497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb485f60de6e8764826cd771740a1fa86429b9b8b0ddf2d98dd1b9b04675a9b82. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/TCJPA2420504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c2a26e25f257a6087fd96af172b63837279ec2a0d3e56c0b681d3af139653a. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/TCJPA2420549.