1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xeaa593cb226ce267cd31423a284388daf27f3113b85f33aa36a416d591a2b50f. 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/78c3c129-3a6c-4f86-883c-cab105d95a38.json and https://artists.proofprofile.net/proofs/artist/78c3c129-3a6c-4f86-883c-cab105d95a38.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 → block OTSBitcoinBlock must exist at that height 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 0x5148ffed2055178789990a1a968240c06ee73dd816a8920a11b1701e510bcf1a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZVEM2387091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d45edb415fa87e1f660493ebef570e49449dc781b721f16cd39f932df45bfaa. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/NOPTR2408010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0cd4c732144dc2c39c13ee7f75d7780332a5303556a2b10fa94070aabdd17c. 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/QZMEM2401875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5e3becb3324bc80116b0d07455b7cd44f98f3e58cdf3912b19c41c62f8c70b. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FXR592401325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bab64e274b4346be0d4b51e16beda8d7c2ed3826e69dda493e1ea5cbd9aa522. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:43:01Z), 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/FXR592401326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d4907d246bc0e883a0acda38f6e475aaa7b674197157c83cf2c18ffe34bd81. 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/FXR592401327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9843327bc4a99350207433fca9f1a499f4abaddf9ea2fe1d56e2c7b771dc49. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/NOPTR2431020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95672da16960058bab564dc79eb0b30287b9d0fca6f16ea15e83304a1ec47fc. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:39:22Z), 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/NOPTR2431030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc97509b437f75526b632a6f17276f79f2b950e90f6a834094bded745696fdd. 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/QZWFR2483036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706b60f47b7b1d911aa2ef2254aad5ec954e4013584cfe376ba17da9c6669999. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QM3DF2408003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809c41e9271fa161efbb6ced273d816efde07a4d3ab8fd77fccb019186f7bce0. 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/QZWFR2487359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4bb2946810cc6f799a1dcb18659cc0521db6b65f00b649884974f030f395da. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:45:05Z), 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/QZPEW2513670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0f497c9e5818ddbe48954d5bcc884d5165176fb1d3761b3245b55374f85bd2. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZWFR2495597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427bd2b89336ce5c4561ea7753ab843cff9dcd24589ab9b78e19327aa6adfcc2. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:31:06Z), 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/QZES52598431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cee8dea51bd5bf147d9646264709e9058a4237c162f94a2a4150ce3dfb0d8f0. 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/QZHN52513358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaecd481b5780c2cf9726547c477d21b98d9a414c978f82005dedf7da0e37cd7. 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/QZHN52517017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f7105568e2b825344eabc5dc336d38e7ea2ec4db754dc6521e72e716cde351. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/FXR592402769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6287cab9edd37e805832f2d9233735ebd2c47706445b71b2b58d89bcc46300c0. 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/US3DF2578970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509ff085801141c8ff6c4c4be7bb827c34cb9f217c71af60c4d78b4f6ec1cf42. 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/QT4K52566514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499952836a84e8cc806c18e488bdb0300bee22b2826b82d8bfe48227c162c175. 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/USANG2523354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1af98b17d0ad4656992db48294e5bf8cf0f9d2baef195fe01634fe977417bbb. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/US3DF2454979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301f78bd3f43631546857cbd57df0d065953b5cfc33dce6a8d4859023db1626e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZES62421340.