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 0xa3aed2582886e24f3744ca8567c8ee648e35c1b4c96b1d423565babc02803cdf. 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/8485f89b-3da3-4e45-b3c1-863ea84302a4.json and https://artists.proofprofile.net/proofs/artist/8485f89b-3da3-4e45-b3c1-863ea84302a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
My Own Worst Enemy (Acoustic Instrumental)
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 0x850f19d37ad00233c837f90f436d90126f9df7d02df9cf89dd037afa0fb3e35c. 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/QZHNC1967016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6059d0a238b8eac1d406e3dfa533ec9528de7ffefcc2d9045c17744cf25aa1a. 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/SE5BU2189677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2091c06ade720ef66820c802446ee49ec42d6a72befbce3ec7cc3ebdda45ae29. 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/SE5752127574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a59c672cff3db1fb9a4a117d92f257f0aead1a705cdb19e453077813c1a448e. 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/SE6HN2149100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a9d3c3dcadbe584ee391319b1690a371c42cd125909ec6ab4cff3f4325e73c. 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/SE6QE2105444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b36cd800e8d2b5f6ce8a347f45f130ee1810eb8a72227edbca1a5005f900b3. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/SE6TI2172387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc121e959e034aa21099a782605e5bc6019f11055513cc4b29a26312cb845702. 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/SE6XY2107637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8ccb059bc9023fdbfbc392939cc502efe43c78b98b8d98eb3d41413705be4c. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:28:44Z), 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/AUMEV2172087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479dcef70b3c9e2303074293bb2b118198b50c5822aea39532608faa81f3dc45. 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/AUMEV2241222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8125464bc54b43c5e8e6e67172a3ac6ad02374463035c584891b8ddab8d47822. 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/SE6SA2234346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a8601027a5c1f2d6a9419b48b5a41a47c77e928d45c03d20b2928602ed98c2. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/SE62M2279185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710c3211660adfa37c1429a71f3b14614442bf75cabd628aaeac81d9b302317d. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:08:04Z), 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/SE5BU2321150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946429e30c80f2ee96d2525a3424ee784557a58bb55fea2e6d3769634c2f8b79. 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/SE5BU2393491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b59fd7f360302efa62abae7f8d8e918de1890c7a39e215f2f6ddb610566666d. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/SE6SA2396849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc145db7417cc7dcc6185506c0b194e31cc7e08e0015961eaaa7e47f4038fb46b. 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/SE6SA2344015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3988a120905c6f3d4af3975961eb83f2083c5252b2160850cd4d013c47f1959e. 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/SE6SA2305666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bca8ce1e11cdb70c5d872ba271299d8dcc1c5e910d93cc3d65c6ea6b13fb5e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SE62M2384086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a14d62d9049cb88958cf99509a282b49a9c961ddf1be051f5e972630c20b498. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/SE6XX2321401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e845903dbdaec0593fc47dd81e134f94ad4a161abaef4a171ed398ce50f1dc7. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:05:27Z), 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/SE5BU2414356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb422e5b1b473dbb617d8f2eebf7dc1853f2efd4df0a92a55c1f054e36893069e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:53:24Z), 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/SE5BU2472994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c3901bb3005007682486c1afe3780ef82444af73545ccc6febee2f1cacb02e. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:05:59Z), 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/SE6HN2431168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcfa6dcc27b1621c892219bb49f5ef014268e321cb7c4248033e8ddb60313ef. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/SE6HN2492800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cba7e86cf186d98f03bf387b0cda51fe2d18ee8d8e5193271f78752e76b86ec. 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/SE6I32431839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa48192962966a1fb73b41bf3ac0a468879dd0fda6f2c7209065eaa01e44edf. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:22:08Z), 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/SE6SA2427556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9321318ff78682990c9291d60f197a7b4c7385d111c04e3b1a0b05bdaf768eff. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SE5BU2506568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31913bcbbc6b5a60fb36c752e0f29c9c16cc2d1ac32cee66a24b6b79a283b1e9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SE6XY2591334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab869ebdd687294bd01216724988a34f02ae9a930b4e4b2a1cb6af1ef8e709d9. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:02:04Z), 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/SE6XW2543977.