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 0xc187db361fc44580c2e2e84b05a241eec588c745a3abfa5298a871d05d0333cb. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb55198b-54ef-4bb8-8266-8b460aa8a6f3.json and https://artists.proofprofile.net/proofs/artist/eb55198b-54ef-4bb8-8266-8b460aa8a6f3.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 0x28813f5622c8f63474ce4289a384b1c3c4331e2c8bf423985833154ec5c260f9. 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/BEB682400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a87c170b8c9a3b734eac1ab64ad253cbb2fcf649523cf7f27900cbd6de90bd6. 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/BEB682400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afa0c3e0636f7c4aab95d96ded983465b3bf47d65f1e377242966bc3b8ccacc. 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/BEB682400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5d1e6951b803fa842eecb8cd75f259689767b56d8ddbfc8d4f5cbacf85c8e6. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BEB682400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b7a0e573d789a426c9a2cde688ae285a0d5db61cd0a593ff69baa3a246842e. 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/BEB682400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144107e0380339fa5a08529381b5668df8bcdf2ea606a71334e84575617af954. 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/BEB682400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7541238bd7791b9166fe192ab6de845166e439b70e55f4e79a654ec5bc56ac55. 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/BEB682400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1934c565cbedb166565ff099ea5a8d5f141ff6f624cf854a35c18e931d1db05c. 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/BEB682400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa44abd3d29520441b6a6d998685b950d00662a20294fcf97c214b3aa9ef5895. 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/BEB682400250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84fda7ab80f9edb68d37df4ab171c1ade6707549a4cd38ce80266366f5909fda. 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/BEB682400360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222f8bb24ed7950b275301ba12023ead2b6344cf03ae104a8360a33a46c4e494. 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/NLS762200162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53312224485d410687990c451ad364b96f1496ff629093d9b7a334219a7ebe5. 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/QZDA62132486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed0a92c6c40ba7ac9005e78d48d8ccc3b9bc24f3bbee3d79fe083d466d704f5. 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/NLS761901393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980ef7894cfa3e80c5d2e377306f9236d517cf107bbebe4ebc2ea6ceefe02020. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NLS761800210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fc5a88d2bfb28529b25ea430525b65b5cb9d507b332e9546d2cb7f187288dc. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/NLS761700164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e3d7dedd371e3efb5d7fad487d692943de2a217c5d5060866051e03b77c31c. 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/NLS761600522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c64881185e574c4138751fd98bf1ecb7bcfe440cd7649dca1df1f739bf2502. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/NLS761600268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b124a5101c902d723b98a0408177983febaef9c98ffd01cf44e6be976f5a160. 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/NLS761600182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde1a627ffcfd023fd7f5c62397a814e9d421d3ed56949994bbd73d68e08df02. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/NLS761500359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3bd049503dd1dbbc2c8ec44a6f9e4842b3df9b9f6b0f7e23891e56e125286d. 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/NLS761500333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeaf4b18588a4d35dc1b7696f08411de25810d758897bb8438ece6c6a9d13edf. 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/NLS761500294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f19cad11244cf64ec19688c308b91b6966b598bc1952a286367bfbefe2a9567. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/NLS761500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb222a266471a0387547423c369eddbabbbc1584d38f0d1931d2fa4429c2249ed. 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/NLS761600248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbee2afdcd78f032f27ea175d6468a6fb5e00b28e134e3e818f6e54cc2dfea45. 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/NLS761600250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb599e3efdf9910494dbfb8418374828c6461d61b7cd57cc770d8ab58cafc44. 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/DEAR41444519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db08aecccd735e1a193b047993d2d79ce9ca5f3892097f663bcb9e27d4ce799. 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/QZTAX2391947.
Ministry of Hardstyle Summer Edition 2015
Jump, Jump, Jump - Hardstyle Anthems of 2015