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 0x8d2015195e7fba53bbfdada7436fdcb85553fb0856bd6a60d1ddfba427b14b42. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b87d757-2653-4236-bf40-d79bb4bc704d.json and https://artists.proofprofile.net/proofs/artist/2b87d757-2653-4236-bf40-d79bb4bc704d.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 0xf21f128b95b014fc02edad31464d3ba7ed39f864d7bb27c7a7c2f9323989c06e. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/UKJWJ1900346.
Looking At Me - Mark Lower Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c97ee1ddd3ec66cce29edff385dea79f013d7ab3cb0bb3d724ff0af207be28. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/UKJWJ1900345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15dec8a91fa2ebdc4223f892254cc8e957585a1361439efb82467a6f8b13b3b9. 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/GBKQU2464925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf373820166641db63560adae36f034a3c949c3c23e54c9b0273b7937fda14a. 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/GBKQU2378020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c551adb6d19ab6bca62261de6d679c9aec2c4d422a5e4ffa101f489b8926c4. 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/GBKQU2305425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1638324556be4549b6139f5e5c8c2dccac76e1329d9d53595d6b9e929974db39. 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/GBKQU2393874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1c4f141f9e03fd9a2b8bc233c473e19032d1b082261385ec4dc3ec0f30e1d6. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/GBKQU2215603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64e17e71a578bb91011b956e668e8258c1f20668a0845d0e8d2cd907851a2d9. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/GBKQU2426192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42207ddbe7022bda74c3cee93ab0db59bbca36981b2ef279c0eaab741721688. 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/GBLV61713854.
Mushroom Jazz - Angelo Ferreri Refixed - Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cac22a40798325978bb05c6ee74186ab8133c3bbde40a3a78e38b39609cf9e6. 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/GBKQU2464926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c77b03b4c03d33eddc97b48074fa44b091eb617fe2890690ff022015fe253cd. 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/GBKQU2464927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5b4449892e87429018434e6fed753f3fe269be97b6c23b0c5c8d09655bc1dc. 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/GBKQU1839454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf10f19234a2f292219b90232c08e5e9744b580611bd7e6951478d7de206887d. 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/GBKQU2347114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a17528f85f6cd55530c98f01ae15035cfa7ec86fcd9d838251aa0364ad33305. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBKQU2464929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887d4fba51c946eccd099048f177617d55c75730067dd0179479f7faf4ed6f5f. 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/GBKQU2043351.
Movin' On - Angelo Ferreri Remastered - Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b6f362c7d4ee4cf5bdafa6698a016561ef6f1be1805bab525298dfe787e3fe. 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/GBKQU2464930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522f94a6ad5847e123afea509e71dd0dd729eccda6bfe5af43e7cb32be169eb6. 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/GBKQU2464931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c133362d2b67adc7f02a23a13457d6fe43e38ee53a8637d6ed0a6755637bcb. 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/GBKQU2464932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a60a263ef80f0bbb097e1ecb8963ea26346f812bcd4c3e80f4dbca420a59db1. 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/GBKQU2464933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c793fe6bd1351a8768a43ecd0563caf1d183a7f81d6318b9d81b2c5c73b3503. 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/GBKQU2464935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52121696d274bf8d084fbf5c731eaa4d465d0822c54e779a2b1044f1fa4de611. 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/GBKQU2464936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e21476b71398d2e84db35836eddecd67efb5067fd921a95c26c3c912680e23b. 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/GBKQU2464937.
Nothing But... House Selections, Vol. 04
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03cde4b983fd0764687c608af953092022feef157283e47e82cb73d72b97b35. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SEYOK1939732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f4541e26c53cc00cc230828ca228a1cf16c55e6aa7e49a6be223817e856cc0. 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/UKXN22173666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f899303222e5d25ac2ba3c9206741d05d31a0dfecbf22918756d877c958eb1. 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/GBSMU9085859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f4167e5e1c48a65089685d879190dfdc7a44b769bb63088ecc94992745bf20. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/UK2X21900082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db4bcf35ab393afe9688a3c45a55477a999284ffc60f46a0c91d85acc00ae9f. 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/UKDTM1900083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93ac8fad7dceba1d117a5f86721507162778dbbb89c333dff33be16a4fc53e6. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/UKJWJ1900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec153a7837253dacdfa71b0a411d2a83dc7467b2b9578d96ba0e1d6c8fbb8af7. 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/GBKQU1865602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6944ab92676db4c3fa1b6c4118b687c3464a1d32ea22f6dab4a9da2584a2956b. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/NLF711500299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6173cedd6ad6e97815e1c74831cfd8e604e06c73d60db375116d683ec0b67b5. 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/NLF711601319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417f4146b7415074654e982ee0cadba4076ae479b540a89446001ca2d6b9d20c. 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/UKJWJ1900311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c56e70f51c2ce8ec7d2f9c85c235dc8ae30f4e247d9dc782925967ad3d45ed. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GBKQU1991082.
Let There Be House Amsterdam 2018 (Mixed)
Josephine 2020 - Markosa's 2020 Club Remake
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f9948a0d29b20752f193078682fce4216773e054676f70244153888a8b4645. 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/UKHKF1200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4b3659a1efc51f42bf0385296fd6ac473571535dbae1e1f35781dedfadfd26. 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/UKHKF1200092.
Nothing But... Essential House Music, Vol. 15