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 0x4e4c5e31f39d6faf7864a4eec26b79963a8c617911aebd29c4b0066658081757. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7a66f93-78dd-4218-b630-ff5ed08ef67a.json and https://artists.proofprofile.net/proofs/artist/e7a66f93-78dd-4218-b630-ff5ed08ef67a.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 0x46cfdbd1ba0482982702861b0a10569021ed47cc6372a5b52d9c6f3e8e5bf7c1. 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/NLF711902461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17daa1ff22de293949ffb243df988f5b3e54dd30cff9bd90891273dc545bbec3. 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/NLS240600435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4778b50aa950b2482c96e017b31e57ddcc926e02999c3f86d0dcaf6852b874. 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/NLS240600323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46eee5c6d7c6fb228092f28411b8ffbaf76e1ff33bf79db2038e5158ae7b3f9e. 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/NLF710702057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bd822404669886535ee01d9859ac4f03f96770ea759af99b78f124796885cc. 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/NLF710600904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc58b9ddf4bfdc99e0f8a9eda5ad6b452e4e42a3857547279069e621f824103d. 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/DEL670600071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a940f824e4f91b7fc970bc7fd383d7a2905e7df1c43443279fbdc92051198bc. 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/NLS240701590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd765d8b1c63cdb733ee2450e83b94830a00d8d33a31c0b6477ea57dd89a89ff. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/NLS241103470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaafa6b8ac76bef93b1eabfc279db43dd8105510adc5323698587baeafd95f8a. 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/NLS240600697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530ddf686bca9be8d06323246937d2268ffe3dcb00c0e03fa254041e910ba664. 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/NLF710702066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc85a5d87db50e2c6c808c518e2d575e9b8652781ac41b88c539a2ef3d8b528. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLS240600393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650f83fc08204c3acfa667b12b12f3a620515376d8f0d07335c0811754a49bfd. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NLC050700178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c4e058107e1a26810ea3a5f022b597ed6a259acf8e606a4bc62c25c9f09dd7. 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/NLF712407938.
Greece 2000 - DJ Enrico & DJ Ton T.B. Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ecd10ed59b256fe998188776cd014ded31ae6e565f7ef029cb26eeaf6893a8. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/NLF712407927.
Greece 2000 - DJ Enrico & DJ Ton TB Extra Extra Space Dub
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e7f1d26377ee19abcea2618b5b534536ed2cc40c2b5417af0d3bf14c637e6f. 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/NLF712407928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d764dbc9a91cc5b8c2d0397a5e8d8ed24dcdcf9480169f07f324ddd35037bbf. 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/NLF712407943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a59a9609413608794ff85e2875088d42bc616a4791473b80fd9151998df850. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/NLS240600450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b42de078ecf0b018552f3cac22aa106a81ff236cdc0236eee2a5df3e017073. 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/NLCY30802918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f86492a0def6db597ff34cae8d12a1ffb9ebb0eee8737fc4a8eedfcee2365f1. 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/NLS240600239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a5b67aed9766fef0ae2a847cd47b3368a175863f8ff6b293cae716ec10e3dc. 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/NLS240600695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0534fb2d3e4cc7025d269b99b5f83b97356cb9debad1b71e664583eb2ba669. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/NLF710300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078df4cf2d046108d0b911f1da10fac5ef654fcf07d99e39ac1a2eed88ccc7b2. 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/NLF711502078.
Force Of Habit - Armin van Buuren's Rising Star Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c1ad465f8a7ff46170dd31876ada8de94b06d8d6837f8c00db24b00add5d97. 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/NLF711502079.
A Few Seconds After Trancefer - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc297e357e29e9bc2312b6716094cfa1614365dd2673fd97c9c1464ef553405. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/NLF711502082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92aae2aed31cd89ea43bf715868af1cb01b719007967fca2809a0f9315942022. 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/NLF711502084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f93093a617d548f513ba8b4a8aec0dfd2f62882889fb194cff5324cc1c62f95. 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/NLF711502087.
Love Commandments - Danny Tenaglia Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c4bb68e0da20c585d1e455a5a5cec21131ac6e8f1ecf902e611f8b30b91874. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USGZ20717326.
What Would We Do? - Industry Standard Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3714162ce3fccc9688382d541ca5e1248bf15a15d57b17c2efedf6c217f103e7. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USGZ20717327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce90a2642068ac5ca01f810f2dc7825c49488563d6fdceb64960cb0e0e2fb4d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USGZ20717329.
Jam On It '98 - George Acosta & Ariel Baund Phunky Break Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef982c01a894ee3db8d015b64dd52501911fa3766704d8ed8845b919a864485. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USGZ20717336.
Seed, Scattered - Dub Foundation Remix Edit by DJ Mark Van Dale and DJ Enrico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4895095e99a25d1f0e724550b34e9e7883d1d84c0d09ac98a80be258b66dc5. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEK021850123.
Seed, Scattered - Dub Foundation Remix by DJ Mark Van Dale and DJ Enrico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef59aaee526c8069589152401de7325368356830f220db1e6212dc455c86adf7. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/DEK021850122.
Trance Top 1000 Selection, Vol. 10 (Extended Versions)
The Sound of Goodbye - Nic Chagall Drumbeat Re-Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9844599730828ca2dbe1175c3220abe1957d715b9d52bac6a98c5053da1fc561. 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/NLC731100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a20f7bbac1c149c1200c057fe129660ceaad817b8553bf1f4108925bb8218ee. 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/NLS240600395.