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 0x6583bdb9ab1a2ccb6bf75145fef305bf723bf36bb4e350c94a3014221890917b. 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/be128f03-4227-446a-be3e-7b275886af4b.json and https://artists.proofprofile.net/proofs/artist/be128f03-4227-446a-be3e-7b275886af4b.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 0x91ba21905e9d951d294ae7bbdfde44f9a7f5ac11b9505e900f800395e7250569. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR9W12229246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95624c248ddd0740bb398808eda92d884845daa7aeccb96ada8db57ec201c28. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR9W12229247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5920c8d9495b6faf1c61f41406b352d57a6f548bac163c46da6a0d47fbb1da3a. 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/FR9W12229248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92aaace27c867042d4ab4b97c6d670c2a09dded6cf1afe9772905ac28697c8d. 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/FR9W12229249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ee2d5ce0f1c42c6499c1f16ac2d67f61e5756d2e11413446144b514c05c73f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W12229250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0595e55703563506fa4847a330c0380757e9bea16d6fa016ae22b7e6c8f9c2e9. 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/FR9W12229251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f024ce58068add8ccb1c789cefb053e70f4286a28421ecdbabbd7af93806ee8. 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/FR9W12229252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa8bfa027d5078f9e79e6d1f1a3e5367d24fb64605a6d7d44a4ec8e285899aa. 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/FR9W12229253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a02406167267eb285a950d30c6bb0d81af66d896850a4b1a602132f9abc5a2. 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/FR9W12229255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4071cb1d2351edc482a33f5473610729add5d19c3bcb4b27d5ee64e32398c66. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR9W12229254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d8cfb17355e7ad41e84a6322c2edfdcbd41f90ddaecbc5d101aa418443c280. 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/FR9W12229256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5b2dab19b1310373a8c0bb75cbcd0cd78bd78e7814f5ea6cce8d9057387dec. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W12229257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000f95f1f6e72a1c0b85896fa716821fa14229a93187afaad2fed17b1e400ace. 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/FR9W12229258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786b91d733437c26c2c1f5fa9982918b2c029c08413d69611af7a040839dd7f3. 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/FR9W12229259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bad677f2c20b6179bb48b0e84d62a26a60242e06274ea94ab421f628e35a60. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W12229260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab719492d70b0ed6cc55fb04133b935c0dc6e6b0493b79f26bd2877b2f28839. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR9W12229617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f024ce58068add8ccb1c789cefb053e70f4286a28421ecdbabbd7af93806ee8. 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/FR9W12229252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5b2dab19b1310373a8c0bb75cbcd0cd78bd78e7814f5ea6cce8d9057387dec. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR9W12229257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa8bfa027d5078f9e79e6d1f1a3e5367d24fb64605a6d7d44a4ec8e285899aa. 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/FR9W12229253.