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 0xfef5e415d1ea7d30d46ddd30de7ea91f0a7028a92a364cde7459fc87d0fcb818. 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/dfba8ffd-c540-420a-b7c4-ef61c65147a8.json and https://artists.proofprofile.net/proofs/artist/dfba8ffd-c540-420a-b7c4-ef61c65147a8.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 0xb51c62db0e0a58a28555c1189c9fcf78c7c7ae24a3f47a9473a83ff1e9f8c684. 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/QZNJW2466259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049bd6b309148e3cdb2cda8db0bcadd0228f96bbff2f719b8bcc036d7edfff8a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:59:09Z), 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/QZNJW2461822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e70e6a56213096acbaf653dbdd014f2226bfb00db48e32158fc879060af1138. 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/QZNJW2471485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5bf41704c801a91a24629026d71381072d35a431ea529f7c946041d7f11676. 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/BCVK92401086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c7a31065b47abaa87e3ced3c3ac0376156fd6079bd25212d216cb0599b8b9c. 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/BCVK92401059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6553d66646523df3b0a394f037ea505ac41f661e360aee9e4e877c61a6592e3d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJW2471469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d63cf98085a74af6c6b714a77bd43bd19af1a71b7922726af452cd45aa78f99. 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/BCVK92400890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc614eab8d0bc4aed37c8e797c820827d24eedabad3914c6d0a4072465b5390df. 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/QZMZ92420407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8f0b4e58bb5a2f67c5106afade36217c98f06e3fdc849ccb17f23a7aa754c9. 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/QZGLM2503516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a049d5dc5658c773f2380ddfa90270d5734e482176f6606b4ca63ee1e91c91. 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/QZW9M2445627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bcc21d9aa81b2865076b71f2cd6697f4f31c80c14c7ab2d3cedd588aa6ed2a. 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/QZGLM2503445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1aa7c1807a621f46811a7cb97ede5e915c437253e74932ce3063e915885532. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZGLM2503513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b02f2e4688cc411d7be99a99b8a3bcf6ad0573e0896bf5938aab0e4e7f74afa. 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/BCVK92500273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaee3f72546d83d1bf52a508262f4a93319e0ea2cc67dd70b931967608c5f815. 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/BCVK92500272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1aa3a26a1d9bc0a766029647569aa22f8bc42ec6abdbacf718af92f171b40d2. 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/BCVK92500268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7dbbcbafdac983a4f2833a32e982f6c7e17295c46178d74d3698816d244c628. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BCVK92500275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd287813348fba6c1cfad8b8fd3b19897a03da307e2553a2e8f8c76925f4f3155. 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/BCVK92500938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62af085a5ab67fa01dffc7cbf80e67e8541ab1a4bbd412f9bbc58bb7f70ad678. 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/BCVK92500923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf63d08ade14074de3e3b3e13e7f965738ec7d3baa100a055ca4ab0ecad600c4. 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/QZGLS2576838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150e6d314c8534295ee626d9fbc029c5ee8d8b12ac0b7bfdb150af93d36f2ff2. 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/QZGLS2545842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef49b6d85c9752b7bb6298420d7a86741239a62151d141cd57ad452678265e4. 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/BCVK92500519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69ba30cedea0ac886f1833ba89ebd4e4fdc4e6e2daf6a66fb19f3a57a84041b. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-21T16:54:44Z), 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/BCVK92402831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c31c269e8ca1a1189e0abbc33f92390f1875788ce3ed737a1c2370d20dbc36. 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/BCVK92402830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381c3c94817d0fbc4ab76bb0ff9e10801c7b464bbc84220643ec9a5af79d6604. 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/BCVK92402816.