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 0x508d06ecb0116523f8007928ef2e9ec602e28555093f956ae1d01056f105f7a1. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6969c4c5-f46d-454e-8691-a4ad2169399c.json and https://artists.proofprofile.net/proofs/artist/6969c4c5-f46d-454e-8691-a4ad2169399c.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 0x5f8f4dd2ef38142dc285fa526ef3cd449a3c02ec22201b80912bbb96de9f7711. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:38:43Z), 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/QZTVM2478423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26136fbe937f320f4cc02256a687ab507e53c609a740c9c6163ea8626cfc7209. 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/QZZ762478828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffa7dac786d89c5b9929c36c4c6f652fb3106b041a01d39c19c2a7515d7e2c3. 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/QZZ772444661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde98bf7a75f090d5451844406df5a9de556e2700a4e303d135eb7c487d80cbca. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZTVM2494594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b18555fb5b04f5ad03d39afeb6e158e62d252c05062d3dad5f0ceb217e3c2f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:04:46Z), 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/QZZ772442841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffa7dac786d89c5b9929c36c4c6f652fb3106b041a01d39c19c2a7515d7e2c3. 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/QZZ772444661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04dcf8f13e6c3dd67e9d26a46d2c31d3131702f70b79926fb02e81358eb57a05. 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/QZZ7M2482423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49076f4517c54a846eba6bb1fb283e7f492194ff97acb627ab2188f9746d25b8. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZZ7V2480768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10498ac1a100f99e3dac189f9b286d80167ba2edfcc4b01a4d03ab6bd9d0981f. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:33:50Z), 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/QZNJW2565160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef79ec689cdcd7e7c814cabf95ad0a8e69722103c09ca7e14c7c539e287468dc. 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/QZNJY2596263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf60dcf53452dd1395a85b98be34bf64d09a496bab1a32101fa167d43df5117. 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/QZWFP2565437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0597ddec60bbc882338e70441d39bb056a597eb60d2300de93ce5786bb9005f2. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZWFP2553053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f27e83586435250b1f8649153b567c926ea553631f57412c7d3814be8a93168. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:47:16Z), 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/QZWFP2539159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97bb30933c6d4e9957ba6ca43a1bc2ec88f5f3e181be4b8b5ad558de8240832. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZWFP2563172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a9cb78a19e8ded3bfc3b48d54bcb555b56d29c45c3ac8a364e0124b3ca1e8f. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:44:40Z), 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/QZWFP2537193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa927f558524b14ff34ad861e84f9e8c11745dee3c4bdea4c98bca49d18e11108. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:26:47Z), 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/QZWFP2550489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2a2f93d5c04c68dc92e7d414619f553133b57abdbef7f93c57fc5679e4f46c. 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/QZWFP2553032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce53b707362bb34eda60b06008f6d998ff2fb162e5cbf11e54dd43ef16e4724. 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/QZWFP2556172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1e14d0c989460267b391f4aecd3fe4dc73747bd89aeb4a1b527e9295da5a65. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:46:37Z), 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/QZWFP2541774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24746e3426219eb456e9398b3f20b0114bf8877c3f6b98af4f445b20966a5056. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:43:06Z), 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/QZWFP2541602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484f6109f8fbb57648fc1ea3b008d0196cd7adecba03428b1e017b6bae2c5221. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:48:59Z), 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/QZWFP2544217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51a449822dce2f3ffa175a06cb2c665bb9012796f45fcd6854c00c139b55e37. 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/QT3F92557664.