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 0x4d77cdba721339fef23c84f261858d1590b12ec1c431c1243d593969c423ad9b. 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/faf8fc9c-eff3-44d5-9745-498404b6b9e3.json and https://artists.proofprofile.net/proofs/artist/faf8fc9c-eff3-44d5-9745-498404b6b9e3.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 0x8ff09a87c5b743845fe38057d6af0868d42902f1ed3a3aaf668b014eecdee5af. 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/QZTB32500172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a738c243b352bdd3a419790db872e0fcc82b0dd6d95ea1e7a81db1c2428354. 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/QZTB32500173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915d630b7310d9fe22f9c58d66df664497581c017a5397e58d350ca0ab454297. 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/QZTB32500174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ba351eb428c6c0ed33b67c16883552eaa4cf407f341542347edba8117cc996. 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/QZTB32500175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9c63aa68ffc34522790479e482d3dca1f0790f311b526af85603f8f89f00d5. 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/QZTB32500176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263e8ea2d1d290ab49a69bf8f0f929f061665804f90c9e95078b0d98f4583041. 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/QZTB32500177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3645f8c62ff2227921797f823e2a06577ae0067170118b5e4a001ae19282263c. 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/QZTB32500178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd50d331d73695816c8f94ab0f1bcece6e827846a052f8511675c0b8e417bf54. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZTB32500179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9dbac7e0b9f44792031372b738c7e10f90d5e58d3caa26c9ced6d862ea4d4e0. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZTB32500180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4953b1903c0d1245951e8b6132bff08f993d94846cc09d53d3856fdf4c1ec36. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTB32500181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf698573b7f1740c9cbd25bfdfa267b1e8c00640cb3c388508b9d7b1cf42bcee7. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZTB32500182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e4692799501d08faece7fb356fa8b464dd2c4b9f61a8463145de06d35989e2. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZTB32500184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252fd409f11f3b4e927a319480819be9a245eabfaa2b1f20877e2ef9159fc2f4. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/QZTB32500185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290274627b47d00dab3a8ea8b6f3c9c823f41b6df7946639ccf6297ee542a6a3. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZTB32500186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d73a124d6adfbd349b65b71b85af94a73c070bbbf91ef8adfe926033ed6fde5. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:33:20Z), 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/QZDA82580411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1178a7331b4a0c6b1a589f3b812527a39b6461450bf053b8b0ae609a2276c0f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:33:50Z), 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/QZDA82580412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63643d017c92f4d9271d4f580ec86c29ee059b2fb37f9b2a25d293d320c73d5. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZDA82580413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f075298cced04276a9dc66e505034a34fa0dbe6c26ebf9779974b0cdd3d7a0. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:33:51Z), 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/QZDA82580414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36df2fb66ee38740d02834e7501b51dab2943e1ba313866e721022e283e6adf. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZDA82580415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd3d4ac6d7d5fee2020521ffd5f7c617444639d58139b0026761ae785b8148c. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZDA82580416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc12a1b5c5f48dfc2118fb3ed96e8245e3c733327fa261f7af9d1402924306b5. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZDA82580417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015eb8cb4628721301d64e60a18ce6c59ee99a7f4379de92f314c53267ce7c44. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:22:37Z), 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/QZDA82580418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f21c59e675d065447d511106a007b82a4341214e394b53a985ba64d3d434deb. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZDA82580419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6a169a7f0899c9bac700f0372b1ce40ee5b93171ee2f394f4cb783eced086a. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZDA82580420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109d6a42bfcec486467448151ee5ba020f73273245ca3c31ccdea30b80594d63. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZDA82580421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e6bd478f1049d1cf7757c6c7e8aefc4fcb077df1f1c5dbd858a4b132a97bf8. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZDA82580422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85cb139e25f85ff21790bd908e75dd608183a882a5db33878692e9b0f60e8a8b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:55:18Z), 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/QZDA82580423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385596eb821e388267e5ff53ad9387b8c7978a59494b232d0471c3b5bcfe5b89. 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/QZDA82580424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a567d73dc26e10f1a0d8a2c1d0104e31864f89671868492edbcbdb8c54f1ae. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:55:45Z), 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/QZAKB2361530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826400197ff2822c420d4860dda791e3fcd809a7a2ef7be076c394c3d562161f. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:35:00Z), 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/QZAKB2361531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7380f984b9a5f8814d54802ca09acc0427f42d4d2bae087e8595fece3f4e7a0. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:36:57Z), 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/QZAKB2361532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3055a455ca34a15003123546977226295cfb79653371502b4dc2aaabedc11675. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T21:01:32Z), 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/QZAKB2361533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1d0d3640f44fc791553ea5d287e0c5888b9ff8d3d94aea2ad8615066bfe9cb. 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/QZAKB2361534.