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 0xdc0cf3752f14b575faa5bc3f57ab3a619b7b156a0f1856e78a07e11f07a64ac6. 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/64eb37b6-e1c1-4be7-b93e-4524194e1f0b.json and https://artists.proofprofile.net/proofs/artist/64eb37b6-e1c1-4be7-b93e-4524194e1f0b.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 0xca288f7badfec5a18183d72c9bba5d3a5304c08b0cbd1fc67fee71d3c81d9425. 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/NLH3Q1500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc382935136f7af8c62d4a93b86ae4804cc7cd20b1785c87e050708d8020f743. 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/NLH3Q1500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc2a80fe79081cf49d7679f4ba2beb94ae189558fc74861cfeb14600f9cbe64. 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/BEB681500290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4866534ad9042da8763e888d4c32ebe189703d9486aafca5ee14a1933b4450a6. 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/NLFL71500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1638d361720206cb0bf09b353ba7a919a426bf37bb13aa993cf6698e945b91f. 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/NLH3Q1500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1a933aabed52572dd28388da821984a7ba57d3d5ce9292c8bf425e18992f28. 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/GBKQU1546306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcdf67ab666367db2169fd642ffc112c81e7415aa5ac31a88dfbb5c5502046bd. 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/NLS161100743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ad869eef7468ea3dbaa09a3c14a65c0611ed186145656ca13eb252b990391c. 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/NLH2L1500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa834eb2d4cb9995c5354bbbaf040236daa9303371b2ea30d0d286d22d6b2042. 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/NLE801500187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c0f56d7b204111304031dc22dd064ef2f868c6ca304e34dcc828fc65bcfefb. 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/GBN4S1500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a99afad7da262654711ff0247af0173da955c9202258f0c6a79369887e68d1f. 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/NLQS91500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f6a5ec85bcbd36cad18ec22b924e2d3dd36e798ae87d58f152a4e5eea2d7e0. 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/NLE801500185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615d5763a2643362e6ddabd27c2a445071de615dd156326cae3412414cb7d707. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BEFWX1502002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c60d37cfae5cbf594efff424c0f37135fdb06cd888c69874036621ce33b3da5. 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/NLS161500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9958f455833f33df2673f0004ab9a29ee89c3954a3b129fa7782f9f27d988e. 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/NLE801500183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04346c94946ece95c247366467f5e0b9c983dc3af2e92a2d58dab60d390627c5. 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/NLC201500072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9579fe2c7d2d22ee2e8fd667afa425188bd2b68e06d059018020932817ace18. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLS761500173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8873fd7a3f5010db7d5322f7e747872278183a40e750ae47c93ecb0aa9a12081. 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/NLS161100643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae0831ca1dc6d28e52d9d2a901d0fa826972dbda7ee7347278948dc05715e40. 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/NLS161500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0945c7024c6fad543d9dd1fe53f8e48d97b366731eb4a0765055a6e105ed59da. 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/NLQS91500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0fb0edf7c4bd8b3d3d2581b56a9de3e72d92a2133dc3d3f1b520b9acca60a6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLE801500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a1f427b8047cd21075e2436897d846a0b61d114b988a2bc488de09bc265d21. 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/NLS161500062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bde56f654f0a0c59b91c3aca11e27cfe353e8d234eeb7e65a8c2e74f63ac57. 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/NLS161500064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5498af11ad71b7f9c1a0f2e7e42630c57c561a7bb763a6437647a93c9cb0a5cc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLH2L1800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6405c316c246fb911746c11ef8fd60c30b9b2e56c2e8068d6ee688b2b3ed7a24. 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/NLS761600224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc56e24bfce4b60e4aea72422b0234d12e955829f976121078990ff28b755bb5. 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/NLH2L2200412.
Hardstyle The Ultimate Collection 2016 Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41d190ee6e4335a46dd27f98ed0c31caacd003c6c10bea19c26c3c19202d883. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/NLG3W1500091.
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 0x7364b0c4d33259fd60f5954b277e392d8b3bd63a2afaef5ab89d1b3fca507b2a. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/NLQS91500192.
Street Movement - Sub Zero Project Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47844938f4e41e3b458a5cd834937b1d92fd4b8f052b26b234ee2af98780810. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLG3W1500092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea0ff10b3f064ef516ddf4bbcc5cfa388a76f75368508e80147a0eb7f3f33f8. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBLV61618467.