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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9484b7927294df318fb5dd2a8c8ab458d44779ca10775e96376c9ff9273a365. 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/d1ba02df-fa79-4398-aa7c-cb56bd9d274e.json and https://artists.proofprofile.net/proofs/artist/d1ba02df-fa79-4398-aa7c-cb56bd9d274e.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdeaeb1a017e8099fdf57a9073949845baee50fbef8956a0061ca9f2197c2d2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/UK8261900844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4d484037d1833e5768f647c92a7355642e7c2c7144901a13a13313ca8524a4. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/UK8261900845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad9698d177b50d038e611b922441200844f85ca4d86bcb5f1142916feba62fe. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/UK8261900848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ed68d35e0dad799418a28568f927491b8545dd3704ddb5a8acfb758288e468. 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/UK8261900354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbaf278ca2e55da17adfa820b3b49c98ad46515ea005f6ed49e85cabda53c966. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UK8261900355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1365d752d3b3534c24481754c0258b9fb8575009ef73cca07a58b270d2a1f93. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/UK8261900356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde1d4011e005dd17c56bfde40b8c1f40b206810a14124e78a84fcaf4576b473. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UK8261900357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29dc564befd4948084022b60c267104a4b6dc3f6a5704d15beae540d0d151660. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA2Z1811506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc89e17a04928ee2111b0eac8381550e27100ed0a82c96d5996427663d826b4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA2Z1811507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e8f0cd88b0540903eec231534427eaa17b0eefd533626ea3c6815cd6a1598d. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USA2Z1811508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ff733056315b591336499370021d6d4d9d2af795b6b32fa2dc6c3d7cdfd14a. 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/USA2Z1811509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c199588961d6c72c45c4a50297653afa79e468f9fa32d1568f5b68dc0d3322c. 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/USA2Z1811510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f154cd57d7639a3f390f6df9fc9e7077ff2798eac87ad68ec0bd352d3ca858e. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USA2Z1811511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721cadbbb7cad8884c7cdfdbf9927090b311e39e02e5e1b968f9188db7ec1206. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA2Z1811512.
From the Heart, It's a Start, A Work of Art
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a1b72bffbc87e55336d9fca95fafd490b18bfe7b344a13ef0120a13afdeeee. 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/USA2Z1710885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208992a5eff75ef1d42a9742bb8093a19a85bc38c26933246fe483300e915dd3. 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/USA2Z1710886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d1c11b7446a585e13c83a7068e8b950af5547d541d181d231a6bbc8c33843e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA2Z1710887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f53b0b60d0afea6d8ab3bebf39ffd6e61b8a67fad7043534fe205ab2c9c5a7d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA2Z1710888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac29b6af48179e10c197c90a0ae3c84448640f6bf4ddeb73cb7b99b20db384d. 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/USA2Z1710889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237296d9615a6b2eb83737a974a48d2b6a344b0da6460710bbdcfcfe49609614. 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/USA2Z1710891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51aebbc8ea9c69c9914fe4608d6c8af92b0a8f90262b9894cd10834057707bb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA2Z1810681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057b58c645db28f6d2659a7f86b919f7c2fb9b08378633c750fb7f3390f9a42e. 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/USA2Z1810682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5dcf4ed6887a493b532f90120b3dcbdee68897a976dac9e57fc01b7702144d. 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/USA2Z1810689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0047e7ccb80c4b7eb4ce3c5f69aa5186cf4e193478ef55a67019d4b5fb787b. 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/USA2Z1810691.
Global Underground: Afterhours 8 (Mixed)
The Atmospherian - (Tornado Wallace Remix) [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32418fd383b8ae53593fca38ae5275d243526dfd004f3a6c54033ea6dd7f649c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBHFW1800014.
Global Underground: Afterhours 8/Unmixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba759346b9761f0a1839ee6b45bad6f8b6b973e4d011bef7c530bf3db36c98bb. 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/UK8262401354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69083fda0db95e111cd03452d4265a40d2e4ce2169810c4dabd505603edc483d. 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/UK8262401355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa9f16173f8c362b2823cd9280796746cb6818a1e77cd22f0dfa8b6f74d41e2. 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/UK8262401356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6954120fb189f023676c47b04dac12c60e39278798e105529a0a834d2bea2ab. 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/UK8262401357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49e4ca8f2de199f291113b5ba52f9b9c06223d73baf6a059aac24570012ed75. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UK8262401358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62fd15d5fd4b60dd9989ab8b0d559c3e162f08de8e607209f9d9088ec9b0e27. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UK8262401359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd76deadc8e688cccb158003ffc176ea0485a592c03328affeccd059bb8b68b3. 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/UK8262401360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4e495ad85547d8208aba0c98bbe37175e5f9901a862fc1177c337196cca4cb. 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/UK8262401361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff50740d7fa79588ee958bd585baa1829f2ec06ae35d9538fa0c896260c88bb8. 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/JPJ902502580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f4eb2d13a0d15e478c15950983d004bd91caf6dfa1616f921df9964b60661e. 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/JPJ902502570.