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 0x8595f6d6ed758b53c97537fc9a17698a6e56b7c0c3afa29a5b4891735bbb89f3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2363aae4-7a4f-4045-a8a1-f0b2a0332e4f.json and https://artists.proofprofile.net/proofs/artist/2363aae4-7a4f-4045-a8a1-f0b2a0332e4f.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 0x1a5e7d65cb4c35130cd234320f4b4e36f69db6e015035c4610f47ecab9224ced. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:04:02Z), 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/DEOV41200202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb459ed826eab8de56feb061d2fac6678846a958732f666ab13ffba6249cf54c4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEOV41600201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02bbd17a558e6e76cc7e9e2eacbd6118d131ce436b324423ceb7c2ef767cc1cd. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/DEOV41600203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45550b9ae9c0b98fb14aba25f57ffa83afa893f1dc372eda76e6b575f1bb8b54. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:20:50Z), 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/DEOV41600204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b4aa16a75a7d42a92f5d11a40c7f231261898ff0304fb5d66bb043c283e01a. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEOV41600205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c1cb1e06ad61541e182ed262eae93bf2808b20f7422d1cd603f111d80d4530. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEOV41600206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ee81fa798239776c9edf21fd3d4ee066798fc2fcddb3f8b53074bdd4637a49. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:48:33Z), 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/DEOV41600209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9141967d0b1676878fbaae55be11f1b608ccfa6cbe1b1bc563700675410e931. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEOV41600210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e49a0be462febd7fa6b20fe1b30f3d5c518e4bbdc02f9a656d55e6b4fa52f2. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:36:06Z), 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/DETB41501686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40ea2fcb8567e15a484df06cb3c16bf1ae88a224be982a8509165e71bfcf034. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DETB41501687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eeea0cc7d6ae8f7c890c4c3d8ae8ae87ed4654f052946f66f65def093877462. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DETB41501688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60e2ed10d47d70036ebd6b5a15bf4841f41a742333a6287badc917ed27c7c20. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/DETB41501689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71091aa1bfc6f5ac3abeb17174ee45fffa1cfbfda2ae5ea0289cf98b896e3e7a. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/DETB41501691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19c5d8b9ef4d87a733eddb83a91e6e17dd10d55aeab3de9639b5c8055b05247. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:30:13Z), 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/DETB41501692.
Über den Trugschluss der feministischen Punkrockparty
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62923e432129d972c114667e7cd9540ca1a239942309ed8d6ea752751fba4db2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:23:22Z), 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/DETB41501693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c96106453b3b03d4660935915baa87aeeeea311ae72eeb70eba4f2c9149c8b6. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/DETB41502132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201868c2f80180ef227cc4126609bdcbb3febeb7d85f90931152390cce784ab1. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/DETB41502133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abec4d884d8287d73c020eb307970aad02429a29d2e8729d78da84df01828dc. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/DETB41502134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f99c931531055397d721ace383c071b705303d4731f838e740f0931c8099967. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DETB41502136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43403eca8dd39b52f2e7514d3b7a7dc42562f1ec95383365cc901eed3039303. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DETB41502137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3445f802bd81e3ae0ec7e13bed4b5996bd12b924197c6f40eb0acac6ffe37255. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DETB41502140.