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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46cce44d0ce2e51630a7c4650599c7eca30db75d2c532ad2d011a3d5f66c166f. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8da0328-2e58-4f53-abd9-dd83f020542c.json and https://artists.proofprofile.net/proofs/artist/a8da0328-2e58-4f53-abd9-dd83f020542c.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96913e71ec787d3977a702ad5d14aa0ddc296864f095a8305318f1f9f1388d4c. 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/DEH741113580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3112213a4a542039ec86027e8501292fbd8607b4a46edf9df4300ec7cc5f379. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DEH741113582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09087e82bd95b2ff50bdde23ce0af4dde96158d47a3821b3c9915de145b6703c. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/DEH741113584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d009c2d8702e962e631c7ad7b21f095266820a30eebc1b89f31d584c1d41073. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEH741113588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc182579fdb74deb8823f5667048bbe6abcb9129dd7bd0e0bc678cc04029fe4. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEH741408046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f728a181b92cda3f1bddf69caa2f049e821190ef61ba7f9bfefb03253fe884. 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/LTE232200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f6dff132b47b3d1a28926f9931d2a46623a9a7efbb6eaa78767edd19fb83f0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/LTE232200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef88240823456902d4ad4b04ff56e1c42ec7fbb543b0c6aaceed5e62f543b0b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/LTE232200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358f1b8d5bfdd2a2c37748d3cf987be1874026b7611b892153bc9a1948105764. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/LTE232200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa43406e70064c61da55a1ec20924315cbc0ee8d450d492dec889cc696b1e6c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/LTE232200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181d43c9fd30d79f053992e86d925ddb606064a7a9376ee2dc04c6247b8797bf. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/LTE232200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3bac9ac384bf9e4382e9bd1fd602ade4cf0730300e60b31f019287120eb92f. 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/LTE231700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be18ccf8114bd59fa6e81117ac9c274724696bbaadf429e7aa05433bcdc324c. 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/LTE231700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d67baf81f9435505586d491fd47ac222814644b95d6e4c046c4cc86317c78da. 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/LTE231700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa627a1c15f977256dfc04f830129dc1a173bdd8fd69c78031001a7273dc18a0. 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/LTE231700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcc2a6792a3a3835a2f9f18b67db7f4a171208bd07a68f84e6de3e81b68943f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/LTE231700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cbdfc77005593030bc64c54124166b5e3a9d78f97c02868448de94f4b7d296. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/LTE231700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fba4e9edc39767e7fde34072cb70a928ac60a80d1714fd6e65fa4b64d093e5. 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/LTE231700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1369559a2032c7e98acc0bd7f9130aaea7de1c4deb585949ee6c9bf82ba9da7b. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/LTE231700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cb1da8de424784a11c9a5efbdd9695e7456f0b989d369d80331222dddb09d0. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLCK41048611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9199d39130f307cd022bb348499eb96ca48334893f6d2b8a82c0b63c4c69c39a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLCK41048613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fb2370ba2212b4b31257fc5a2729fb7430a7471fd1b7c8a217de2f8b720bd4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLCK41048614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79552c827f1e4bb9240e4bcbfece798787ae77e46b36aef39a45e9a8b0572955. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLCK41048615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11f827071d97526cdb86be3bab2ed3d7d949176e7bb9b4257f3ece4e1d311ae. 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/DEH741119612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207be21608a0fb5a1af6c0fb4488aa494481868fa1d8a17b3ca00f99936a9dc7. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEH741119613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0715a9b8056537eec24bc7773067fe91eead2a20a0edca2a9e0b49b694872a. 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/GBKQU1967407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadec037a270eaf8d695aec8d7999ae6760bfc63da398e839bcc144f395c2dabb. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/GBKQU1967410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2bed1d653cff9d4987a97204ec091e05159701ea351238ce957a1e31f766bf4. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEH741406161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0ca423ae54879bd4b59bb89e1f6239589ce00dd8dd063f376fdd4b1074e215. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/DEH741406162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcc61e4c8722932f92c79d59ddecb3b7ff0d1dca07364d826ee95889ed97140. 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/DEH741406163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62388344b9c0019b0dd90da76d6a69add374bac81284c18e5a712aad6e6129a0. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/DEH741406164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2e4e3a1e77daf5efed8f98c3dd1013eba3468149b57279d056803712aa94fc. 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/GB2LF1100073.
Nothing But... Electronica Selections, Vol. 08
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a370c6488eacccecf4c0dda2ebb349a79503d7af6efc65e326a0a724bc38ff4. 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/GBKQU1966895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc463f574daba7f44b8bdbdaacec61bb178787bcbc0ad4150663b580174a7388. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/GBKQU1983234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a77b9bd5546818c64cd924bf3b181e2e39d651e172c3adf849f0a89f6fbac39. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBKQU1965595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef208425ee19246064add2fcdbd941a107550c9ea54e9327e984794ecf610992. 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/GBKQU1967408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48eea808e566cf28e2b8dcc755e76567150197c3c0b2d45ca93047f05d84497c. 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/GBKPL1958649.