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 0x7af8264063b23f6e38eeb725946305213dd8b8e52310d1f6e1c1b4b9383bb18c. 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/fd05c8c1-ec9d-4756-909d-4aee1a227632.json and https://artists.proofprofile.net/proofs/artist/fd05c8c1-ec9d-4756-909d-4aee1a227632.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 0x155283c86a4a86a80ecf341d5f5490521c6ca3a038b6edd5ac2217e527a9ed34. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:29:42Z), 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/DECE72003105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b2144af8d07d039fc847491f2b123a12f918d7a357737a2108e9fe36bd01c5. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/NL4NL2100265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbd4bbfe6ea1df4ddc2061b67825415c515e8ff4bde265ec48db1851085a5de. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/NL4NL2131235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fed0ad8b06da90050785bb764e30551e2ca4118ef30745a5086c80f1c3ffb7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/NL4NL2147993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ec232eefaddf2179452b48ee72cd845e771c5458fe04855d66f9cfea5d4163. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/NL4NL2176535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4758638deaac13906921d9c86ccf39a56910411fa002431f55d1e5fd8266acd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/NL4NL2220434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6961f128356e049771c4bfdeef1056208824bc65c712252143c2d702a180cea9. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/NL4NL2220593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3b99ec29c890e99d64bbeed78b4f1e64cede707a4db18caa3ede0683ad29e9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEZC62208329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56aa375ec0ec240cfbab80ea6be0dcf281299cabd520133f4f11cee20f93ec3a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/DEZC62323419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f96761b55b0bcbd0c1034762f1eb712d0204370bb9ced9f49ef94bce103593d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DEZC62338708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651e1e9dce02200b3538fd5c1282772ac8d1c3fd6478c0a1b5473a997223780f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEZC62346790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab49f6c49d1132d73d94d83b3ff232d45cc2d7147c860490a5b2276b13fed2c6. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:19:48Z), 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/DEZC62351900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2425811ff5e6e00ee8752c42496832473cda8bf9b481d41bfa65f2aedff690. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:24:38Z), 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/DEZC62361640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd2deaca1522a006af825217b0c2851bbde0761e0f262163b714277e4c38efd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEZC62364673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41a4de8ce57a307b84db68ec174e7429b9fe1faf628a50b472855f221d4031e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEZC62372561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e528b7ec03f85438d955bddaa5e95a618a4f8f986eddceb758c49e75dfd3239. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/NL4NL2215268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2fb6402efd13922975ef70db9fca4298b5246a707c9a7dd3d43408f74dc6d2. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DEZC62204514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56703968f48fea642de34f89e7145b88627d40f58c237480d40b71e84ef7a483. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DEZC62367012.
Wie weit können wir kommen? (EM Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5535033f012ee74dc9d0fc6947872f6c1e72a48755c386c9f39bc4ac23804ca3. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QM6MZ2405985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f464c316550f8b3c17dacc28631c03608a5a2446a8ba777ccad542bf8816b6. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QMDA62445296.