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 0xc8d4d12d854c6abd2aa246bc63ee750ef9308de0e44ee5fc294b90bc30585fb3. 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/b668a617-2adc-4064-91c7-04aea56b10c2.json and https://artists.proofprofile.net/proofs/artist/b668a617-2adc-4064-91c7-04aea56b10c2.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 0x1dd82175b3535a20aec137a91c799e607b607bdcbbb1f5107c999dc50046f69d. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TWJ010900203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6861038d3411f1623b35497f58c8303a9052965db9b7ec10b00ea4c821826f. 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/TWJ010900205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3eda69bf4148b8cff018ac9960567fbab4723a7f8498137f794bf79589d6cc8. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:23:25Z), 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/TWJ010900206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b53be81ca13924574e13849cc736ac676808506c77db3e0cbe6e94ea2bbcc2e. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:28:44Z), 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/TWJ010900208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb7d9b741f3c3a75d14aac7ad5700839625d66cdd7f075245a4e3d66b9c4625. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TWJ011000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0a505965294ed972e345a901d27345dc4eb9fa631011a093f5dee860e07b4a. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/TWJ011000203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cf43118d7d41e37d66059ca721b6098b45f5a492dd326418c6c8dbab09975d. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:36:15Z), 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/TWJ011000209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b23d0f0f119e903e344afb50853add2487c49d5743835f3057d4578fb6caa3a. 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/TWJ011000211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc67074a41f2f2b49451a8552aed9ca6df0c2d3b9cda88a52213f26a2fdce36. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/TWT271200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f5cc49560d8e0b532994b26d072ab71a023e083ff11cef6316ccf413c14781. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TWT271200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28ff5f6f8f02890c553beca9a175329e0bf4e205d61bd27f2edbf0a6bb0b984. 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/TWT271200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28ff5f6f8f02890c553beca9a175329e0bf4e205d61bd27f2edbf0a6bb0b984. 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/TWT271200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee158fcec756fb48e482b0420617a2c2972ff601b1402d6c62446937c9bc41e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TWT271310005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51d19c001cfe4e396783b016a268de608249f223bafaa49f66f9baf93e0a040. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/TWT271310007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ec9ea6fde3258a634f7c5a666ec6cdc26bb39391d1da803dd2703dfa5e418d. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:30:47Z), 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/TWT271310010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c522db395db8b6335276d8341783a3339ad9103f81eaad23675f98f32f6f83. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:43:44Z), 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/TWT271310018.
棉花糖 katncandix2 幸運兒 2012TICC演唱會紀實 (LIVE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3feb930f47c550a8a5fb87d6e89e3c1f150d42c6a1cffdc2f95006351dfdddfa. 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/TWT272100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3feb930f47c550a8a5fb87d6e89e3c1f150d42c6a1cffdc2f95006351dfdddfa. Chain 2 (Bitcoin): anchored in block 957624 (2026-07-11T23:13:54Z), 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/TWT272100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6371b3096c4c2279184ac5b2be1ff00194db3f3d7cf33d68a10d7324e17d6ba. 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/TWT272100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5faee294ffd5f94f6daeb870211079499f3068a9a1b50b61322471297e72838. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TWT272100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e46c824c2cb46cb87200fa6ebd869d841c58b0906f0a9a6546260db7f47b28. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/TWT272100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc292dcf66cb8731430d41176a91c4a86a6692ff57d0eafd88e54ccb9639d728. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TWT272100008.