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 0x6c6851a0142ce44df413264e9b882a88ff0dc670b285798f382a67f8f58e7fd2. 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/41cfffbe-abe5-4d60-b3f8-d40ce6fcc37e.json and https://artists.proofprofile.net/proofs/artist/41cfffbe-abe5-4d60-b3f8-d40ce6fcc37e.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 0x1a26a468be3d6033af983d0bfc697f0594621b5a62483741f29ca4d236096441. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAEB1978899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69dda14b818e0295fc32841b7542b24a6dc1c281676d09cfd761ec6a5739b26d. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/TCAEB1978903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96a7225f49865606c07b59433de373e10ee057ba22ef97055d5be918ba6d274. 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/TCAEB1978912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30525bfe4997c485b1561cf050bd6e06493b68ff7fbd3f6431d3cc2e7eae202e. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/TCAEB1978931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6d91306476a770b445a6b06ca847cdafa94998981939f5799ba104bf40a136. 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/TCAEB1978933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbef4ae72d618b5701140a7cda0d846bd6343e391a5b7d1e099724f1166db40e. 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/TCAEB1978947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42de9497409956c7c3bc6aab27752be8f4d1400af6d85dfbb347416fefe6687. 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/TCAEP2026762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8f8a977eed8532b39448bda130455ec2dd80c4ebbd1a9ca3514f4f1babb2c0. 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/TCAEP2026779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10efd0c22c8fa9132045dd23eafc01976d0e37d6117b3f44c7e5f06ec0a04e54. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/TCAEP2026788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cad4245e62be8871eb51c1a304d387874d4d161737d0343626258461c38b53. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAEP2026795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e689dea31f583c5c898413255b140025b25c1a9c3f1c5a0aaf5af33a80b0cec. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAEP2026840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cdfd8aacafd25ba3563f5dfe29dd7b1468182459633223041e1162b9e5b55a. 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/TCAEP2026896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790a625852338cc6d17e0f4d58831dc6f11fb90120647f7864fb5f4a1b8647a6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAFM2174466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41540d1182e31cf4c39aa3e6153670b3e4f6395a6b1967c70b9d47cf77e1a9a. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:24:18Z), 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/TCAGD2270183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29011df010f82a52f963b7d19ce3128a5467c0cd5fae64e6a049c0a1f253aa2d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:15:12Z), 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/TCAGD2270209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ced04c10c1df27d4f31689907914d29f4a373fb77f6f80c3db0b50d3ac176f8. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/TCAGD2270223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c328fb4243fc032dc62939c917a28cc51ba3724676c2c43e46e690cd8d10852. 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/TCAGD2270229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3425648b3c21a72a0e358664f5b001704bcd53723ab38bf48771b4f1e3bca426. 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/TCAGD2270230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bc6c694f554a591af3c9605f26fffb1390d5f20a16708307d4d3f69c3ad91d. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCAGD2270233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b4a6cf3caa26ab7d2374cdb143aad79142a05380d530d58386f5cd5764f3f7. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/TCAGD2270237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a3ed6c036695872bf93cf09d77c164303f08f2250216e71b4fba0784482761. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:59:45Z), 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/TCAGD2270238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7573b805a417447d279a8ce4f5c96f93a3a62983dd2992051da75291c3bba9e. 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/TCAGD2270245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaaa72d766dfdf87ba30590e3d7ab5f57d3f6c496e621ab14fef5044561b0373. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:05:57Z), 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/TCAIB2480390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96825548a48d7dc9d06f27491a183bf064cc5696927a0cbb53f113ccc413aa6c. 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/TCAIB2480410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9b50b24779c51b15ae2351cbe4516dfd257dcfd070a732137fb0cd75b436d7. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:16:34Z), 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/TCAIB2480429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc38a968897555aa7461dc1936449067946a34f0b403b5b73713c48cbe5f0711. 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/TCAIB2480456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecea4f711381e338301b1d8438805985332f9ebe2791e6113f07bd09274ad35. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:43:55Z), 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/TCAIB2480527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75bd0f353ec14dccd4ee760a6daf63ca4e408706f52ade3d0564268326fc6a1. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:17:40Z), 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/TCAIB2480559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5275a09e65ce154bb309ca3689340cee32c2b53638cf8e8a54c5c168d708a0. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCAIB2480592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1764afd610e508398091ec2629a398b3df1f4d20f86351537e7556c79b26f3. 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/TCAIB2480613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004ce57a1adddd7306e001f1a0d21ff22038cb5137ef3454d680b3c2c0d3de8e. 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/TCAIB2480648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75678a077f681fac6cc8f39e54c0ac8fcee73bcf842e46d58f60d898c045600. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAIB2480692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1975675f9e07b3b2cd99c336bbd3fd39b63783e647791b5f100e35210eb9b44b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAIB2480715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca0ee9b410e97a6870bcbb2b75885959052c187a49342ea00d0641b677c6fb8. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/TCAIB2480768.