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 0xd16bcfee82860b76a1e310e017f825219ddf6c5034361b3875446cac34fb808b. 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/e2b3b70b-e7b9-432a-a939-41ca8272f0e2.json and https://artists.proofprofile.net/proofs/artist/e2b3b70b-e7b9-432a-a939-41ca8272f0e2.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 0xbd34aebadb519df005d970b203eed622a6c7bc05ad7add1ac7207914084094e5. 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/US83Z2320755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c30dd2a91f86adb4ca4211681465182de54a84b4e94d902ad6ae787300f63e. 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/US83Z2320756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8e2278f1dd08face6e5234e269f004385c57c60fdb445a49d11872bbb77e23. 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/US83Z2320758.
Ki' Ile Tu' Kabin (Feat. Dr. Christian Rätsch) [Amu Amu Remix]
Seven Lessons With Mehmed Begic (Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43ca2b83aa7e19f7b82bcd39f0e4568bf1c0e49e2231e87f40a7ed890741615. 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/US83Z2209249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3850551dc00ea6ea5464366dddab61f5ff4a5f0937c51ca7d980434abf4d83c4. 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/DEPQ62101122.
Tribu Ancestral (Compiled by David Madrid)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956c1373aea595336dd142e00dc0715571d35597995b3c12b4d9b1975fbf2a53. 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/CA5KR1835371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e14994d7826a2aa515eb33ec7e2bc3240be00894f543dcfabcf670d988a824. 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/CA5KR1835372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55413e81116de21fd42c7453c196870bfb377b63034d32aa9dbbadc18c17bd47. 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/CA5KR1835373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26c000630b8106130ecfad014bb556bc39e0314d180854588e728976e39d7bc. 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/US83Z2021264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf6a146e479bca37290f5fbe9e8b07b788860c57d764038b674cd79856f4fa7. 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/US83Z2021265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd232c92a21a381d0d23a89118a3b0c20cb51a07f1d58448276b14dca8772240. 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/US83Z2021266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b5cc58ee33659b32cd042e9315dd759e6a65900347b95de82d30126b11ad9f. 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/US83Z2320065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee392e4f50d815c5b063b00d2e1165b110b9deef4c499235cfb81ef461afb678. 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/US83Z2320066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb754526b78ab5417fc4b3668706ebd6033e540947371c2597cedc75ab025f2de. 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/US83Z1796985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67f673acd757aa69491a6628cceab6889eb0a23045a1c3f9434f8f41e4a61ff. 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/US83Z1796993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f6ff57e6340ab84607d2a5bfca1a83e1ee6b9e413a2d0383c7ad613370f217. 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/US83Z1796994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b44d8f9b84b7588fb07824d45725ed11818706c4a255083571fedc3d76804fc. 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/US83Z1797000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf1d0329a34a8465ebf214e59d221b8a25add7784b5d85bd5a9a945691a45e3. 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/US83Z2319072.