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 0x8dd5326659cabe84ec23a523e3447971fe6bcfdc84cf80d4564bec6eaf452d61. 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/f055912c-9fc4-4f91-942d-1baced0d907b.json and https://artists.proofprofile.net/proofs/artist/f055912c-9fc4-4f91-942d-1baced0d907b.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 0xf167f1710225a94e099e0076e90168862b3ca8a4d5c2908c1978572414d50df4. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:44:48Z), 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/QZZ7R2402030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb640b1e5ef3999a536d4782d7f65387067e9a22156714a5acb1af19e168737. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/ATBK71200356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe089d03cb9d2e731deb564f86564454a601f9992fb6b33ff06830127613afe. 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/ATBK71200357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218c4a7acada315962ea86114927ba8ac35543e2f50ff7f2da3311f556f2d7b5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ATBK71200358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a931e1fbeb40459c7ea9431fe64e66987552ccb6fa08a6522453bf03468e12. 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/ATBK71200359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced0193227ca93f719135b9a0306b6a7a15b664ccef2621219f907053b2160a5. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/ATBK71200360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eec64ab6997227b30586566bd09b2bb20f56e844177304f34e5144d07b5fad4. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:41:53Z), 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/ATBK71200361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6777e1f00df6f6d645b9f3c45212b3930a45769abb262df86eb8fff849f458c9. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/ATBK71200362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c8a653d6d5b737d052f8641491a881c50b4a0e111d583d65a856eb8f29c33d. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/ATBK71200363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268ab89352500ef73d84c0c2e55543944845ed0290a225285f542b1563b4f23a. 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/ATBK71200364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cccb744a69f8edc5fceedfda0476ec660e10e421a7d76cd5665cb2c8004aa1b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/ATBK71200365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb035617f43a380890b5be646810d975eefa5e031fed24502834448e636c1c8b9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ATBK71200591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8435668fcca730b16a5269926fd57066eed1602ce2e6be5af13409b43cc9004a. 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/ATBK71200595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2a1065ec10375e80079e78273ac101eede9625bee8631fbd62643397a6297d. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/ATBK71200596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7654f9dcef79e7e9d92ce7b251fb9867166d7945675abe9bb4f72ab45ca6f23f. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:52:22Z), 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/ATBK71200597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ffd38d35ea7157d597cf7547bab008b57f5c14fc926189e910a192b5486e16. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/ATBK71200599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c8293e8d057d88c690403730afb21df8c2c88782856cf3fd9f69f56abd48ab. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/ATBK71200600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe10fb93c1ddf6999399ef931b87e7073866f479913cbf983cd1cff11261e7d. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/ATBK71200895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184f22e57e7c9dfef745e540e80e5d0951579a3a80931cf540d6200f4dc199e5. 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/ATBK71200897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2ff0fb517ac953ec43984f0bff65feb37d5ed1ef71656cfd83fc1073dc6456. 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/ATBK71200898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6af25f3b5bf44c7b22b6d1f479289fcfe9bef3489ced8e783ef6d13074967c. 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/ATBK71200899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910d34be03b21506a21e6c03567733ee8875a8c1298614537639613e1d20e7d7. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/ATBK71200900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72c55a72b4e6339642c91a1d03c7dfbcb72ee350ab0287d26e7230a48a37cb6. 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/ATBK71203488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108663fb21e6ba1c7f02f9c7397c13f46a55afca414ab3a9099a81f1400fd1e7. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ATBK71203738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9a7d653fcfb8b553c908d84cb500b2a6b6117540045026e0394a461959a2eb. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/ATBK71203739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f71074ce801506829ee79ab6dc551849465fe90b6fe7fdb0bb2fa68d041012. 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/ATBK71203740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4213dbfcd31c23363e5bff8fda081759669774209dd2404fcd976cc47a374ab. 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/ATBK71203741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7ab6a3dc60bc927137ab40c63851eabe3f4116aae6fde21aa5dfed3a2a9692. 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/ATBK71203742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4bbaed1bfbe653b99cc1f13e73586eee1ec239ad339bfe6e39725d38c536d72. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/ATBK71203745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc87a2a510dfe326e731cd0a4fef85c0c66d905b58d07a5f24f84fcab207fa22. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ATBK71203746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3e9b7e3bf7fc59d76af6a5612ade5387b0dbeda2f0f2d4d24cadacd47054dd. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/ATBK71203747.