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 0x1e07dc3db3a0f5bb76efbdb4dead753c22c9d95baee0b2e717dfaa0c36346e69. 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/57d92614-f391-42bf-9572-b5d3ec7d7b9c.json and https://artists.proofprofile.net/proofs/artist/57d92614-f391-42bf-9572-b5d3ec7d7b9c.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 0x1c25540efda68c04ce5cf7ddf587b69eb7292340c7feb05d7307c75ce958c93f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR10S1876402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a299270218c9534a915f302ac04ca21ba0e923999dc58e8fed4daec2b92088. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR10S1876416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0c6efeb004ab9a37927cf48e2e089844027c7e409942b493b445295504d65c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR10S1876417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458ba9c5ae9dace1e5de7c03eaa531a65372bdada3b9e9a30611ac99248bebbf. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/FR10S1876418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb76e4beecb4d42335a01b569783932479c39399b394becd17dfb61b385de87. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR10S1876419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2f7e9d2847ed5acc4aaf33452b108675cb1ea8a805c269c00d6de7c54a813e. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:21:11Z), 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/FR10S1876423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2241e71271da2a585ab9e4678e26ffd6993b2bace7683c088c31ccee5475c7c8. 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/FR10S1876424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851370f9ebe308ac6e5bc76d4185d42f6d5e675a1326a2a20a9652b43ce4b66a. 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/FR10S1876426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ca441d854906b07b9dab704f71e0287d9b91e8156799fc2d4437c6270f32ed. 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/FR10S1876427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13044ef9478d4a0e714460b3ba07c3ba933221ea5f765fc20776a4517a78946. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:47:47Z), 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/FR10S1876430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1be140a226f5b5a696c83659e31ff5979af17020fadf2c989c8b174a8886a1c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:44:23Z), 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/USHM91970013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a9e6fc537f68c55a3fa9a777428b84029b25c122143420261ff937ca10dca4. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FRX201835677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be99ccf5281df9e2b793ce791399a0d5fa60331dff85994e202f3a60bb7e125. Chain 2 (Bitcoin): anchored in block 957661 (2026-07-12T05:37:10Z), 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/FR96X1972157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d37310c2cac6cfd1998e39ceedcfa109954fca86a0e62f605f9afcac0c7f7d. 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/USHM91970016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82df9c5f8a96b308b11572828875020c8de6684e5fd67bad8d3d02c6939a252f. 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/USHM91970018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa745bc486bafc05ac2c8900c51c5597049e547b0054f5602026b1ab89bfe2c6. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:10:25Z), 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/FR2X41925635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b035c8bccaa02c0fe29f98f62e368ce91adfa9586cb452fc81676335858cb8c. 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/USCGJ2041482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b13dc1c0e9a10d91b781e1daf3683c857f5949a28a957094a88fbcb44532e15. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USL4Q1974524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef2685c23827df21f3d3d611713c683605115820b3939ffa378ab6d52bc5a15. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USHM82114484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc18c08ad0ec21367434dfcc2f1cef8f821759205b8edd56c79c184d7cfe143f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USHM82158673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5b673150909697d57de26b25a2268fcc4c88414ab9390481d792a29eaf527d. 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/USHM22183541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0cac7c8e3f9c2ab91ccbd67f69bfbaa67dc0b56ff1f78cdc400bcb165441ce. Chain 2 (Bitcoin): anchored in block 957661 (2026-07-12T05:37:10Z), 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/USHM22268625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc38914f828570b424ed8bd187089d612c04fe924ed7aac85c0b3278f0b1ce5. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:10:23Z), 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/USHM82263671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8e7c01710b8707f41772edb98cc39cca5fab82d0e017a932f2d1d7ffd02358. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:00:21Z), 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/USHM92294756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc081f99381ba21adf66712e4788859efc5c3d7007d33bbc1fadc08969a6a5df7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM3DF2241869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf5fbcb5133e9111c81a58bbebad1a2bfa65dbe5de6f8678c7d8502c56f8e8e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DGA092411997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667e19377fe00ba9f9b16be63b208b3fbdb0b064a46f332bba9da4f6eea934cf. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/DGA0P2453601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf5fbcb5133e9111c81a58bbebad1a2bfa65dbe5de6f8678c7d8502c56f8e8e. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/DGA092411997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe6495be060fdbce1fa205de7565540545b6a57730b147e70835e892ded5d25. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DGA0P2453602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a16958be75f6b9ce5798eb9079d473b9acba06409a0ea6d9a552a2fac9d687f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:58:13Z), 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/DGA0P2453603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b950bcf80e16e0b56775d81a8e72aa44afbbb491d4c110d45dae2ffcb19bc7. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:04:07Z), 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/DGA0P2453604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efc57b95954e3a309bd464cb5f9e1d3d497af17da1154c1853133afab6b1356. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DGA0P2453605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00106ddbe33ff413d14c95d0d3359632979bc4731f3609711b289ab800e03d5. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DGA0P2453606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282fa38d6243a7d6231167806432d3cd2dd8516754b307177e0230cb1fdcc853. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/DGA092411998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfceb331957feb75f72904f172725c3bdbf30f9c73db485a6aec2a5c586461208. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:03:34Z), 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/DGA0P2453608.