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 0x857a005589362f7104b1ee4fed85a380d4ab529fbb70d82588d16e8d9d127571. 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/ea9a107d-4b5a-4a61-b112-d80e71bb754e.json and https://artists.proofprofile.net/proofs/artist/ea9a107d-4b5a-4a61-b112-d80e71bb754e.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 0xdc72f4dc42870bfafabe65467295d0cd7ad7b2643e2be5cdf16b370e0e58dd61. 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/DEQ022009930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472c8051828a62db3f3c96aa61db7f7fdad45a39dd9ec3298c676fab4e6ced40. 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/DEQ022004013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571c11841422a615e21747be1aac1a4124d90c598ca87819a78dd1c7b8855a80. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEQ022009931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374589297b3befc3b6850dd8f12c122f5cdde139030950e39f4d7f8f2a45a811. 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/DEQ022009932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d3fb204f5797ae629ac9bde2a9f987485868554de9046600be9ffd269e410b. 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/DEQ022009447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca5d80d4612622983161ca65cbd40a56c27b133c4d95d5e41070822a9d50118. 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/DEQ022009933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e90d3c82fdbf19b34e38526ab08dda216fc7cbd3aaa4549b70b7c2891c0aa0. 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/DEQ022009934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbb0ccb3d64531c67358bc77fb17820cb61a3849c7a118bd1cc738942d26345. 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/DEQ022003284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f9a425d9725344a63ca3ca02edabdf475321fffb4710211266e5e0e44879c0. 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/DEQ022009935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8e4918476101f4519747042ccb722d9590e4b1d1c5d15cb6e79488ff0ec6cb. 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/DEQ022009936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc916b3e3b9cf15e9ff739ab3d5252a4536595abc3c35d234d6d8f6c96371660. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEQ022009937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59df8acd4f93463a6fa90941332d44a071869e53214786b4a6630fe5eb12d3e4. 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/DEQ022009938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3dc5b5480f3618488cee069a7d348a7bdacd760dd4acda49aeac26fc9e5849e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEQ022009939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a5d74675c032e55677234782c28303e8acbe2fc5285cbb36ab7386da4ed194. 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/DEQ022009940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cad3eedda08fca277d3023668d8cb3729f52986f056c966038b226b354ced8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEQ022110992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb57ad7b893437a164e38f430060a993c419f02b92e02f249c1c38b810259f3b. 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/DEQ022105227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2acb48e4be26bd43135ba979c95753c40a740afc2b9f4c05f417e9a17b0ef1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEQ022105346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2e6f07b39bd2639296a877be1291dc69d73bc81bc4b3ddc2df057a4b955963. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEQ022116396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9112a723ea5097c08f766178fbc80901115e5438608abcad706139218f29992e. 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/DEQ022116397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f354e2ed904f65536c23537b442c4256d7060df3ce90e3a05371c66118982b. 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/DEQ022116398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5248873a3df253e7c4bc5a924c7ef7ad3ad0638ccfda1323acbf439519965517. 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/DEQ022116399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927144242af4a4d656b1654f16046a000f76b28b1b954b726b4b04364d838fce. 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/DEQ022116400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2acb48e4be26bd43135ba979c95753c40a740afc2b9f4c05f417e9a17b0ef1. 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/DEQ022105346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb57ad7b893437a164e38f430060a993c419f02b92e02f249c1c38b810259f3b. 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/DEQ022105227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0223da801be830520c92bd9368b41db678e37ebf79206abd9e8b1c709ee1c805. 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/DEQ022116401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cad3eedda08fca277d3023668d8cb3729f52986f056c966038b226b354ced8. 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/DEQ022110992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48177e4f00b7c658af608d054938b0bdc8e952a8e38cfd7f6ae5d255910bca82. 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/DEQ022116402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31eed328eeb70b22cc957d194308eb98e4c64b9dcba511b38a185aa4f513af6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEQ022113625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf632e60434e23f33886d585fbe62b20e2649ce24cf7137d6af71d4e026272952. 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/DEQ022116403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1607fe304f5d781b90130a0bf605018536605e1ab1f9518e17291a9a13ad31d. 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/DEQ022116404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28187f7035206c97ed3e3ee3a2a3568d8e4ff120d7788d82ddd4114664aa349e. 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/DEQ022116405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff04721737342cb56b23cd2b1b1f2f62f426fa995bcfdab3ec18654e0c6985fd. 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/DEQ022116406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5bd0048ed8560e3346dee184f022bf3f237626f8b7dae8c08d471ba5dbebd9c. 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/DEQ022111093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0ffb431f2b7147586bfffe5df2bb4526fe64d1b906fd988a6fc2b9ed9b770a. 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/DEQ022150505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ce7c5aa78cad60e472b3c3b1665f744bd8fa7827842144f5cb49621ff9881b. 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/CH7812215571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3d53c0745e0f1608ed12512a0f8561f863ff28a6e225fd9072ab3346a8c625. 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/DEQ022390518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da31cfbccc4b81082bb2041048a0114621503eac90878eacbdb8a950c362e36. 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/FRX202464611.