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 0x51dde1edd6b2996af6a2d28759d275ec5f6a35f70b5b73a5114bb947f411f966. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ef88bc4-eb07-412a-976b-dca344a4fc63.json and https://artists.proofprofile.net/proofs/artist/7ef88bc4-eb07-412a-976b-dca344a4fc63.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nezvi mě na párty, když tam nejsou chálky
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 0xff473101a24d33d7958962e0225a8ce45bab00df5ae665d674e34d97793d7f93. 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/USANG2104707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1a0447d787d0224d322a19cc47556a77724a1a6dcd8dae5c3b126e96e39b3a. 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/FR96X2239490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf070cc552f77bdcfdb375962fbe9b8688c4153da44f9e908835ca40512b710. 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/FRX202236510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149862cfd2e8372380fc48602b92b86cd0c1a028d098e361d59edbd518a9b85b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRX452288033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd6e9b8c1663905197e6f3114a6bd1061faf73a41d2a4308c2dcf6703c91b3a. 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/DGA062236552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02aab675341ca8945b9ba0e04e42fa144ebb00c927e5d7f5845aa5cf6017c13. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:55:08Z), 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/FR59R2318142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3653dde5601abab2eeebb7d79c0484407d00fe8e95a4721224b7ff562fe89bb8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CZDN92400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce25bdd4d40960c2bd6c2c24d69fcd01f666cea55b86681b4f2587bd911c1e2. 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/CZDN92400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8ca977e1921e67f0275c2ec980979f5b071d8a555babb9a6ba23abc612dd02. 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/CZDN92400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeeebb3b7297133f5973e53ae0867680f3ed7c86ab20c1f6180598453f811642. 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/CZDN92400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f410b62a1cf3dde38feef2b0b43c5b356952e2505e585d080d6afaea09cc207. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CZDN92400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d5b64e0d5e72285094cbe2b20cf2ac0ef2996aedebd8e479221c0ed4c39405. 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/CZDN92400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9133b52ea026ae527b8d7080c64060edbcaae0814b8c78edc2080e127851fb33. 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/CZDN92400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812d61c8be90216adc015c542c564b0a2f730c53cc57aa284d045b1dda8d4eb3. 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/CZDN92400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514a0ca90e6b08f01680d7d53cf3d42392b4211c5ed443c135c79f750c40221b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CZDN92400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437789b57244b8970ebf1d1f5398cd865964808321c9bc60cefc8ea5cf7c89ee. 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/CZDN92400005.
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 0x6c7354f6fe9ef4699c1a17b80b3949c72e0e1b1fc92fd18e61bc1947e6a2c6ff. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/CZDN92400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aabf1e3d48dda398b64f5d016492b0704336eb32a74d2bc22840c41927e167a. 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/CZDN92400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa2c2810817960636297d57628cf7c5b34a285b2dde149982fb981f7f776146. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/CZDN92400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f51df5f8cf7a0617360342059ff26873b2b0e002de173ec3d6135f12f802d6. 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/CZDN92400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06424048886cdb474d03188183c51d1d7c007a69578a50da1eca35b12006e6b. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/CZDN92400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfccbc82c355d46ab5c8482b463e641b312eb0f74e7d2c91d42cd14632df1f274. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/CZDN92400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78dd7e911498f4f4b2cba2dece33c08cf20426c93ba300364188ac9559cff24. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CZDN92400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94899db849f0ec7f7d060c4410f6d1af0c1f90a284e2a28040076c213aa90a1. 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/CZDN92400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ad461040fa5c704e0f2a4e920fc3081f753dfa2948735cb7c904d515dc72fc. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:39:58Z), 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/USANG2499670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa382713619ea551a82a464c7e1ce9c9919e00527c1ad08cd1ddd55f449ce8844. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/CZDN92500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6706f2b631d06c7daa2da19389279ef94fe09cd5aaa300eff7a08233515c60. 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/FRX872317317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6706f2b631d06c7daa2da19389279ef94fe09cd5aaa300eff7a08233515c60. 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/FRX872317317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd922c281ef64839a1b2c70ad31994bad329ab0637f8fc88176a95159945a1aef. 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/FRS182159513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd922c281ef64839a1b2c70ad31994bad329ab0637f8fc88176a95159945a1aef. 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/FRS182159513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73bfb8f23e5f0a8816b787f8d401eb73ced57815a1fa3905b60e062b47b87f07. 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/US3DF2485891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d73f6e5a2c2d45d8ad895e79d754c476dc3957e96b24ea9c27499894630e237. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US3DF2465671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d73f6e5a2c2d45d8ad895e79d754c476dc3957e96b24ea9c27499894630e237. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US3DF2465671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08979c0b78463c6db6872bd951bba136149845d824b74f713a0fee45960452ff. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZHN62140617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e287b323def63ce1340bc0f6192ec1259eec585e74c84e781a165e899d6c4a. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/FR10S2247695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a13eeb325feecb3d4e74a712c86acb8c567ae8ff83ea7356f66c778f290d4b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DGA092396417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d5f5ebe1b0104562a2ac053bfa4218dcf4301d61f8473b47116eac820ed37f. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/US3DF2255799.