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 0x1d5af844a5608614c25799b3ecfddf8564c5914007f530381483d66b9f77c8a8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/64c24883-02b0-4452-83c8-30a7e9690f60.json and https://artists.proofprofile.net/proofs/artist/64c24883-02b0-4452-83c8-30a7e9690f60.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 0xb5e8a72edee0f115bd67cd2b2c017ca250ab8aded7a08f2c7d90a33bb4f31019. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBKPL1898382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa540605baa132f04bc29ee4fca35ce242ee2f576737818da5261b1af55a86bf0. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GBKPL1819553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec2fe2ec015f0fef9c5c304cde3231f71e851980b4a78dce4e37fecc75451b3. 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/GBKPL1933978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd761e693c246ef7bd506e6328c404678d4f1736cbfcc6cfdf55e85e9f5b4f2d. 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/GBKPL1954359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ccc1b1fea75828c281e5428b073d33805974e2973b1a637d54763adbf2dba2. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/GBKPL1958861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefef1718a95c875cd1681f4f1d4e1f39f40da176cf90e6eac12b30cb9616d01. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:31:40Z), 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/GBKPL1966016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafad1e0c1da842e9b90112b18c5915715b225c13f80ca746e0825fa75d2b17af. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/GBKPL1976170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb349edf38589ce2b0082652ac5ca99e150203adefa9ba549ee81bba92f76e8ab. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/GBKPL2092975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f8715bb5527bc7506af2014a2f7ac2ca79e97e23deed5f0ed689cf2c6fc070. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/GBKPL2016142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a48130a29c37a205fa7756c4df5c408daf860b08e14c2a4157819c7a797532. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBKPL2209906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe011eb7fa20fb626b5337b9b8e171c6a7850f6ef8765b0940a8c82531d61415f. 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/GBKPL2208503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43eff7e0f841d945200a9e693161bb246de9b6df6cdf7cd6d4e7b577d6a7ce08. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:04:51Z), 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/GBKPL2209908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d258c4a7149611d32a19d9e0ae43021545fc4cc534e246606ed40fcfe2bb17. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZVEM2345103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c998c57c3174c7145e55c85f78207a0c078d85375a6911a7131d573c6a14af6. 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/QZVEM2352528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f27e811fd358d340952a01c74e026c09e19ff95e6a074603491a36f4ef7f0c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:44:58Z), 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/QZVEM2352529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb57c7581aa8bca9175d3bec454ea95fedf2ead7a54390eb733542d07f2e0d2. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZVEM2366439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f9f7fd91956f372d33e06417f6e541c7dac330030245d6e8b4b74a92f1e3f6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM4TX2415851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb560f4879fbc5013923abeff067eb684584694bd7808a9726cfbd632be5240a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM4TX2420406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045c67a1eaccffb9bf3a076746902fee42a5ac66e407d8e72f446222cad5944f. 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/QM4TX2420411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fa3af4a3396b76070af5df844464aefe48c26ae28aeb2ee81e9d034f9ce8d9. 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/QM4TX2420432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb44bb48c4cf844d734d1881df007696bd183ed9da453122e236cd287e219f6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMDA72441908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b40ecac3692e9ec59963c812ee181665ed5535d1d0dab5756cafdf74bbd8f4f. 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/QT4K32566728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4d8c25a10f972d1960e7784b50e1c7eb611a4e0fb331685e8368235b6fa35a. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:08:04Z), 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/QT4K32566729.