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 0x7577461bd75a6fff8e002fb65430e76f0b8b177fe1325671e4d8269e76dd41c6. 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/5cb3973a-b1fd-4a56-9139-38abb2237cb3.json and https://artists.proofprofile.net/proofs/artist/5cb3973a-b1fd-4a56-9139-38abb2237cb3.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 0x2d607f3c4ca4ee9d3cd4c09ae8b657ef902c79cb683d2e4ece530a740756d30c. 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/NLE802200432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa10b2581d0d54540422962ed0ef03eeea6f49dd1e870a4fe7b1f4395831cc26. 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/NLS761100317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812f6604f1d03e94bc13e0cbe2934872245d41756e52f5a2b89b279c01154c8a. 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/NLS761100300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa660594fa38ac9cc192df66f88d81399cace466058c28c26cc82dd4b7f6a7cbd. 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/NLS761100310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382e503fb99390755b5633df9664161c0baebb88eecc4823784df55c5112efd1. 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/BEB682000247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907f18e339b3897b5f9080e329a00665628ee05838d4247680509cc9686bee66. 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/BEB681800290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5115d96ddb142ef2e0946fee5f69cf6c8d763db1caa8f63f918f6a36cbe2bb6a. 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/NLS762300795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652f014834f7613f837f6e44dd081eeac2be820f9284e47f0654ed90072a2906. 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/NLS762300791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4652ff7a64e6606b5ed028a35f90a0264a78cd27a7728b1d0ce52f970aa6c718. 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/NLS762300793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93c6ef1d687f01f7bef76f91088d3f25c271872a9942b539af88e6d8f653d34. 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/NLS762200580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556348ca3f0136ae7a0536707765dd40c36d26616eda9904876ede6adf711e32. 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/NLS762300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33c2373ed2fa0a7d82accf0884c47ea639e51a913a7032764457af2b73371e2. 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/BEB681700304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1fcb5743f05b395d7b00a7dd6258c8479bc68f3705e5546e2d4449aca8aed7. 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/BEB681700325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761d508b7a9a449889f984028dc5d1a074a67b98502ab40f0bbb419f1b2e2d25. 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/BEB681700263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff6cf9aa131610d870b50bc6491855a6044327b3a0e19aa186977bfa0799f1c. 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/BEB681700312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2440d0220c55b1a02dbc44afb785e5359baaf6fd9198ac16222bd41e40ed11a9. 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/DEHD61612393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e87bdc1f5a515921b2d41251fd0267871f5d492e122d705355b12e8e70d87c6. 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/NLS241401042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d78aa3aa9472b83616da2683d8fc677e4f5dbaf6eebaa832f037b6ee88a124c. 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/NLS241401044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f3517f23a3be15d52ee50042138585c7f0365a01a40803d8134435ccfa6771. 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/NLS241401060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd870e947d62b0638050fcff68d9388208a0a72abb344028f87324da6e6edac2. 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/NLS761000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7464ac6d791e34777781381a889281a90777eda9a40836f995ad09795bd44798. 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/NLS762500147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd1343d4ef562e88f93aa29e5084f8406c97c32cba00acf9293199e0c0ea355. 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/NLS762500065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19aa5e5308ec6350c4c6797627be49913620b931f4ebef30725fb3ea2d14340. 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/CA5KR2500282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1666237fbccccf28cd1dace829970e7dcf7dc7959c34acd573f15410f1b66e. 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/NLS762400262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149aefbddc64a70dc8b87bd686aef5be0a76997d5d5823ebb5b9ad101a1315e5. 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/NLS762400195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b48cbdc618e249062154127852b190ac87aec9956da848b99c0a7f2f8739389. 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/NLS762400174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60540337f8b02a98f2ee8521103d6d4fe123ae76c203b4c206b5a70e2c5dd2fc. 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/NLS762400121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05999cc7b4f5ae92e2047fb8369f8d487048f1c73a6652a3af608f16d1fd2834. 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/NLS762300999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ea89cd9fcd5a82e3deacbcb5a81d1bacb0bb608512091e2a3d7e908f4e059a. 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/GBKQU2431289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11c4030c03ff844f07716dc666bdeb0367696a6eac75c07f2e2a72e22618bd4. 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/GBKQU2427496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6f668a70cf01378f27682ed78675409420edc6ee674e15efc6f3c510e3b183. 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/GBKQU2423537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556348ca3f0136ae7a0536707765dd40c36d26616eda9904876ede6adf711e32. 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/NLS762300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93c6ef1d687f01f7bef76f91088d3f25c271872a9942b539af88e6d8f653d34. 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/NLS762200580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd86dbfbad563e195f19033d3315cd6cd228cf7832f225304706ab07e5efde71. 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/BEB682200274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af378452f56cc1f5c1cc89696469a64875fc006ff371cf98e37ec5c9191a19e. 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/NLH2L2200367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35818a9799fd1a1af771b90686c77f3f3245a6150a0aa42a69da21b3d08bafe. 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/QZDA72259039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc90e8a1257c95e6eea65753b8105ca2bccff9144944e33e470c6a2d37b79f50. 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/BEB682100378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607e0f9729711cb0650d88b266830e9ad15e480d447c35ad66dcd2ca1af14402. 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/BEB682100227.
Hardstyle The Ultimate Collection 2016 Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388ad96b504cc8ac64951342c1affc76bd0316ccb8456be8f0c2dbfab0f060c9. 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/GBKQU1595645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2254eebc21523866ca90c48bd382c84eba6e6cd35522a9a92e32ef85f8bb4df. 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/NLE801600340.