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 0xd5dbbf384ff8b0573d10ee279dad2642cf8acff9dda7ccd324fdafd721a182d6. 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/5542bbc0-c680-42db-81e0-7886af12fd68.json and https://artists.proofprofile.net/proofs/artist/5542bbc0-c680-42db-81e0-7886af12fd68.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 0xd186fd47bf140d13509793ac3c93074c2fd09fd1f8e578811a10584b6ae5d2d5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2414302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c81c271a480301651c9b0d55dd7761d28d90b9d994a033e7fa8d9d02e102aec. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA5KR2429993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127f717f98f3bf23f07971ad292433a1a2fc45a89f170cd4a79b43cb4bffb06b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2434157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6098bcf36629650f0d6cb884ccb8e86e9f67f6a225888745046087ee5ce2ed. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2434158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde719c21179249ee0bbcf5432f73a49d292957d7c3a276e0592cc5555ff39743. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA5KR2434160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef34ccb5acc599939a17999bd16eb4b7e0bc601701f7d908f90f54fe477cad9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6F2297258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed375ec99d1cbeaaf9515a820d01ca442116cd3567c483a81409b0f9dbe961e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6F2297259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f6734b8cecc6f136bcde2796b83833dc748fa7161aea3fc22bb9237cbfd936. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA5KR2440571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593735a0d8e7761eb710b52e78ceecb05ab5506e38b081881a360840d3ce6d12. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ5FN2151083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc393af7ef11f1e59d8948e3ae636cef51eed554b139dccfdb8bc14efac40c375. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ5FN2151086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bb2bf39fd3dbc2c647c50828d8269ea779da5d36180d020f922e9544cc20ec. 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/QZ5FN2151087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2b03b548cf59dfbdfa2e6d95fb89ece463fc90c13f819522e5ccf495572e11. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZ5FN2151107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56cf350c78008d9922aa39b17d960d1744d8dcff2c6c141af2b27ed5eec8bd41. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ5FN2151109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144c85c67bd813f1974870dc2b3ebeda9db9de181a48510e091680527eda8586. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ5FN2151132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cccbebce9d27624e237c33bfc16c6e0d611570f1431f92b584e7116d4b12724. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ5FN2151133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895b2461e016fa1559c746722f254da79cff258cdc3f65e40a4948bc8e7437ad. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ5FN2151146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9378055df4ffa82ed390077d073f615e68419510afa9a2d64fc2e9d75cbd42. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNWT2316758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36c310fabd4d50e408adc84eb5b59d20e3d7b688cce1ccf9f0724d9b10b503f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTAW2294019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c77f0a4b247be49ae2d6c1494a26db53a6cc58367474c4bb6b0e097afa09c6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA5KR2504173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7d0e3fd183d926be96579468d3ed69f45b495436269d47c88a76128555a67d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2504174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c23274d5436d41673a8b1a3af8d17eecfbe801a211630b3b10c61a5633e60a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA5KR2504175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d1076a2ca6dd6dffdb93a7d2b4a3d94adb059aa57d2482c611c9be3c6937fe. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA5KR2504176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde788392cfac8ccd1e007e551dadf0590259b0c3d2879b5c60f3204dd337a652. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA5KR2504177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9480f77745b97a3c7b59c0c74e377934e147cb2898bce477121cb59c4bbd747d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA5KR2504178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2386c0a8ccd27dfacf70f9a18084f45248796139f2a8f6de544459d9b4cd35e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2430436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437aaa83e55c40daae56f5e8932af7fc1548f9c16e47034858538f7cdac59671. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA5KR2504179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda76da6d39f114c34f4e3dcab37adbcba9519a50d04b13f293609db0e7c09840. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA5KR2443903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99bd17cab8f9422ab6a3ffacb874a4123c406dfbceda9511882652ffaa699a8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA5KR2341081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e06ec96bb593300c657ff658f01818ed75c708b7bd0e5a148b3aff3fdf9239c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2317074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afdcf355b64bb80fd1d6da1f27010830fd383731f96740a04177545aa06bf24. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2463653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a0a185052152ccebbe8dfcc165ba0ec463db6a153f6137559ec2118c9da37f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2504180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063c01abbfa4937c68c45dec283fd746ae5eebe2c563d169637230e86093d6e6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTGW2403415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0f274dd723b0f344600b1d62b1aa169ef7b326131c85f5cbdb5bc420764650. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTGW2403416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759523a127653a815afac4a7d2daf45847fc90b09990a345c0a0ca92bb865d77. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTGW2403417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56680c0792af9e0572c91fefefad0a556133f56d3f68f2ae9c583c3f4dc88830. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTGW2403418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c920530aee9d3c15c927dbbf6a7e934387ade6e53f97cd7ab8d59ccfe163b3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTGW2403419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ff01c77805407b3641a669bbd8d5827dbfd5d1946096cb994f665f705a2ede. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTGW2403420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d8b495353772d3cc94e387390bc76de56223e0e750309a029fa54a2b6b5be4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTGW2403421.