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 0x393dd4ba1934ffb004e0644f2b7871257211fc1dac7a45f41f1dde63452981ac. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e59d3b01-e3f5-4ced-9b00-47293a0b0d9f.json and https://artists.proofprofile.net/proofs/artist/e59d3b01-e3f5-4ced-9b00-47293a0b0d9f.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 0x0c55319338fd5687bfbf6334d72d417818fe5737e447c2dd075d907734dd6abe. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/HUB882201012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0fcd4505de49feaae20be53dcf0977d72b115b7c0feba33c7ecb17d98e5c6c. 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/HUB882201019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85972dc789e7ef4e4cd25000ba89b2326dc7ed6b2e3df362b2d9c643d9eee5a3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/HUB882201022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0926bfa0d70e92e50f300920edd29f4318fa77ae46b8b0ef3f78fa3fedc04f. 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/HUB882201024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7adf1f20b919803cfd216e79d17b2fc065a9b31baa067ac540efa5205473ff. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/HUB881301212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf44791c5345877290c770f64a14ed8094c29ccc99cd5449008c26b85baf36c5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:10:46Z), 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/HUB881301112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac3c819c84117f011b178f9411e385b273ea4e060077a9c79774bec167111fd. Chain 2 (Bitcoin): anchored in block 958676 (2026-07-19T05:43:13Z), 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/HUB881301113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c14be4e2914974fcce3ddfbf4d64c67ea829706bc40aed75b384b68899cfe3c. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:36:41Z), 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/HUB881301114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77db840838e19ad0c5b91c0de8f47284c19debd86bcdf22a0d49f494d118a059. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:19:05Z), 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/HUB881301214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292fa43487bf25c79cc8cd90680fed979a04f39b3fa2223cc6644bfcf976badd. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:23:25Z), 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/HUB881301115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5233589cd91e6794fc8ecd5aebe41daa76cb2da3735e1704b327ce5d4dae14a4. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/HUB881301215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f507aa4a707c703530175fe6201f4d24358b08ca9a0c353a73498b1ab0d646. 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/HUB881301117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8499fe54483b6ab0a58359a080befc8bf7ebfccf0f91689459cb84f315c3e137. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/HUB881301218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6470ba960497f6d49b000ec22422317f70b9c0c98d6b35023ebfe36c3667a12a. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/HUB881301121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a65632c8bfc48a3fa32977e5f286a363617c3d453dd72594d19c97ea2b3f0e5. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/HUB881302111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e96f6278aef7e051c5bfff875c7b6a59cb888a68d07c72f821f190bbdd95e58. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:08:43Z), 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/HUB881302117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c99f70fdca497d57e9b218093aeaa724b35545f3174ed4ed7ba0c9e8b38b46. 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/HUB881302118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c49b7910ce33b6723b37aec9b34b3311f2957e63b98cb7525a829b8fee596b. 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/HUB881303114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb15fc4aa44ab383605929acb98032d55d5a46342774703a06cd3163205297b. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/HUB881303115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc257a101d65840bcafc0dabb3d9ab0ce78c6db2a7938738a9ab14f16f76ede58. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/HUB881303111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ffb842a44357ae8b418b9d1e097fd31cd7a268f9bd83318e8ad869dc2f129e. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:06:10Z), 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/HUB881500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17460a6799477f7007c9e5891f0e4a85923c6540e5be9eb26b7651a2dec708b. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/HUB881603211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69bbd270e25dbd52f86a427a6aae10d32046d985ee650adab73289475759cc7. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/HUB881603213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50717626030a5bb515091478a3e550fe235562217bb0a12f21571fb96927d5d3. 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/HUB881603222.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd850c5239445b9d5bf20458620b1fdcdb01d4eea208fe64254f5aa9b90c0d892. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/HUB881801015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51a4a4884e31b294b66af39c4754e0e596cda7f9b0e42c811e26c6173acc47f. Chain 2 (Bitcoin): anchored in block 957633 (2026-07-12T00:19:47Z), 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/HUB881801018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6550534f7cdb3cd80a9f424cd4429a5297f6c2eb207d6d76005dfcf68bb395b8. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/HUB881801019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b829d7a03384e67cda6251535e6937beab4bea5fef4f1e9b79da3ab2e29c8b6. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:44:22Z), 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/HUB881801022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6513ffd9f519e75377f6b4bd2778600d674bf1228c9f2b17327ec1a4e393cea. 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/HUB881801023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf992cbc421d99bf126229312ff06461382d117d2b722e5e7ab9a62414d83956c. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/HUB881903313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414a5598cf6e37103635a839709149293b2c54b02d64d6178714dbdaa6b6979d. Chain 2 (Bitcoin): anchored in block 957633 (2026-07-12T00:19:47Z), 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/HUA612200390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87af78558d65e1d0f2b784e7285b192641a4fcffe947b20af346545ce8c1941b. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/HUA612301497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf835e0c4f543e23eff6e9fc0712b6d5d52cfc7ef6150f8bf57be3aab4d5832. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/HUA612301503.