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 0x60b0bb4de93fd977306df2c866d898a09ac5ab9476028f448df4726046e74da8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5831f2b-3550-446f-9d6d-466c8dd2db8d.json and https://artists.proofprofile.net/proofs/artist/a5831f2b-3550-446f-9d6d-466c8dd2db8d.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 0x8bec4b5118ebb007fd6ece25f2ab4ce65aee30be5419e32a693d2fe4c1d68a62. 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/NLF711506942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09e026af1eb800b049a3fade8d3892a17fc7ce457953cc020b698f40c704ade. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NLF711603217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec972978b6d61fefb39f84b86e85e6fa91b22dbfb1afdfb319d49e8ad8a42eb. 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/NLF711607202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fbf4ec8a6bc0f9abf1fd59c4c46377c3a261974c15217060f12da29bb68a8f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLF711710041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05f6e8c7d8cd1855a5e8742d0229db4d25783aab97bcb6576d6c53bdccd8e6e. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/NLF711801816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007e575a2aaa17d43b38bd4c79c739f02b59747db93e49869b78f1d06af89812. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLF711801289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa084ebae42206d18870c806a8de997b04da0c8de7a4e5ca28e073bd442fec8. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/NLF711807479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb2029947004ecf6205469cefd69b134164221bcdd01ab9133d974d6c696214. 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/NLF711902278.
Equal - Andrew Bayer & Alex Sonata & TheRio Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaea333a6b20521446e31f566cc711910ff7b21bc74f74d1f4c5e4df8f19f731. 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/GBKQU2402377.
Surrender - Alex Sonata & TheRio Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63dbfa712e44bdf44421d17cdb8d3128ffa16105fc03403e4d7752e386592bd. 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/NLF711908205.
A State Of Trance Episode 874 (+XXL Guest Mix: ALPHA 9)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45dca6afe573331cab107a9e8393a1f4f13e8ae0a6badf51277e25068a8b90a1. 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/NLF711808935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1044ca14fb16009315bd06005732fb4051ac71c87484d6061ccb4f962ba5047. 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/GBKQU2447449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0cb933adfda6cecb2fc992b83b88f41ee0ed4d1d0936ea5022ad502f6f75a0. 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/GBKQU2393081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9efa65974f348674b2f88ed60cf17aeb2e3e220bc47d91e7b6e658f4700a64. 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/NLF711601112.
ASOT 908 - A State Of Trance Episode 908
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc0ba063d64553c1a7be1bd73b6a86e2ec56fcc929ad2f99258b796aad90c64. 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/NLF711903582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec972978b6d61fefb39f84b86e85e6fa91b22dbfb1afdfb319d49e8ad8a42eb. 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/NLF711607202.
Giuseppe Ottaviani X Alex Sonata & TheRio feat. Tishmal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae1966b0cbe9e5a2a90b5c3e06a5e77c53bfc9df050a388427c0c354afadd94. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBKQU2402408.
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 0xe1473aad2fe1779c7448a07c747cf2f9322e97cf5c57caac11d6bc6ee74b58ec. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NLF711406026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d00aad8ca82888fbe9aaed9345cd01a21955db7c3c73059b67766883e00f96b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/NLF711600362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5ffec5930490f460ddf7204f68b374d1fa1bf9d17ef798361194ecb6bfa935. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/NLF711607157.
Find Your Harmony Radioshow Year Mix 2019
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e14f529f0c8df293ddc51b6a256a3b372f18303f4d2fb2649e2ec7dbbff4d7. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/NLF712000299.