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 0xc24a0c63abff334a4a6f0cfa75cc79e63fdee9ef0ce356ecbaba0e4da21cae0f. 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/cd4f2a09-6313-44ec-9833-085522464316.json and https://artists.proofprofile.net/proofs/artist/cd4f2a09-6313-44ec-9833-085522464316.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 0x6321744fca94e24ff7c9c5a47e8d03ba3787afa54a8ce60e23a4cccac8455f26. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DEPI82457437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06910e32411fe64e9c6eff5e1cb2d72f999e400900c3a211bff504bff4c0619. 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/MXA3V2418336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c55cc44b14a58e6cf99a0717c706d072d7b9aea80b9fc7cc083bcafb6f07bd. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/MXA3V2418342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0741f6cfadc50b09b1d2c51d3fffca844945c1804ffa194413771399beae79. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/MXA3V2418341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5c613a13d2429f282f2e4f87d360d0592c3f2b553617ff1a0b62db58f0c182. 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/MXA3V2418343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7a786ee2ca1969c593a4f5119d04d36189080773838f1f44756815e60cd95e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:57:21Z), 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/MXA3V2418334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c882621dda5c8c4565a460d06dcda5d1d40938cfa55c842db76b6d8a1a9796. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/MXA3V2418413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf076f6ba1988acb715255b74d66a9b9c6923679aaaef71eac6b9d52ba7b147d0. 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/MXA3V2418415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da3d1ad68e72aa779e844e7e9514b2beb618e1cc430521b5fa3960cb2735163. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/MXA3V2418414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092a911704d3c0cbf7823a037be6552860f354c7800c688d0ee2f0d9e4b0bc6a. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/MXA3V2418412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b8486d1c2ed87aaecd97ff765b64b79b72156d807941aab7c067299f033f4c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/MXA3V2418418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9c04a27467fafd911633c7d7a16f422866b3f6e0e463d341a7a491dcbf2856. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/MXA3V2418416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c08e26841838d46d495b13e695371ca800a67912603eb8625c375dde195c6df. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/MXA3V2418432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ac695403af24b96f6aea459fbaffc2b23850890578186c4d755dd47b259060. 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/MXA3V2418433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1bf1c0a85591d8c5840e7cddf3b37a0b65fd2297d3457598dffdd80cfef0f2. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:43:59Z), 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/MXA3V2418437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2824e8892a003950c39e2708ec027314d1a0b905abb137d0ac0aa19bdabe297c. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/MXA3V2418435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f5307077911f0f7b59763e5b8a5c23c568d662bbf6e7757567a4eb4ca98b02. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:42:11Z), 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/MXA3V2418434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f23dea19477fb99d3270fc8e5aaa8a5b2f1e53fef0bd6210b749c1826a377a. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/MXA3V2418436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe27395ae6226460147edac23acc243fa94cd329210233f5816b3acefcc76867. 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/MXA3V2418646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecfc4f30c7047b251ec6c65c951855bb673ca69cc1eec64b8b678375748776e. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:47:00Z), 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/MXA3V2418439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d48c1f4f6e56e81b5036a66952769272b016a28f1995799c32b109219711dc. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:08:46Z), 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/MXA3V2418443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177e262086fcb4e93a2e54d51ad7b1af45b1152117c821ad68aa43ff7011695d. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/MXA3V2418442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2301b8dfcf9ba2247c3599bdb232bd4caa961a4b99240d5eb6c389b3a952181d. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/MXA3V2418440.