thumb|Robert Seethaler Robert Seethaler (born 1966) is an Austrian novelist, and actor. Awards and honours 2005: Tankred-Dorst-Drehbuchpreis der Drehbuchwerkstatt München for Heartbreakin’ 2007: De
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 0x9c4b4d01a1269d2bca74d714a975bc450a3debddfe96896a22d213b657c129e1. 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/7707c461-e26b-4846-8ab5-e5c62ca5c7fa.json and https://artists.proofprofile.net/proofs/artist/7707c461-e26b-4846-8ab5-e5c62ca5c7fa.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 0x065e32da3f3fe30d3213b007c1e1f2a2b30efd2e3393f757bff4fa4ec71fd1e3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEC162104011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9821bdf94439eebbf90995098b23d65cb4f770f29f3e31c42d3e4cccd5df25. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEC162104012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6013f17182a37a9c8a7c488dda8c5c0136d8f1bb20dc3238abf3c1c86ef4efac. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/DEC162104013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb171b3adaef6c57fa0ae10475543ba6b7c539c14ec92c432bccf6c179e4a75d9. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:42:10Z), 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/DEC162104014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640355874cf8c02ea734e5a35d0eb28d5caeaf630e0294352a034adb1125a013. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:49:20Z), 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/DEC162104015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181b5bc0c497407548057d10ef9823703579f68e5b3b5d6d1fb8e1f2a001318e. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:39:16Z), 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/DEC162104016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea13121f5258a46641259e11145bbb9ffcefaa39dfee423ab0170707deeb14a2. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:52:57Z), 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/DEC162104017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6fe0443c9a3b0d43c2744473013f6a8d3db6407095bc2e6982d3232d0f24bd. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/DEC162104018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ef87965ee511a91e2a66e81943505598d1fe8e151179b88846c073809b7ccc. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:19:06Z), 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/DEC162104019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9c97497c8881e66d069035a3ffba8e901ac02b12bd273b6f018432b823fc4b. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/DEC162104020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3747003ccf2f8f3bb3082db0a4a42c569acd9afc87ca6661fb428a8876849def. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEC162104021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9415b9faa4eb3e356dc9fe7c4dacef0423df95da3dbd13e1de00a5eef6a46d03. 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/DEC162104022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf483f035d14bb8771d3f0664cceacb4929bea7c0431786da73ffbd2cbb1b6c22. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:26:59Z), 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/DEC162104023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e521ea6137263e35697cf160ca3c004b38edbcb73b230a7f189f0b459e7a23. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:02:54Z), 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/DEC162104025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0ae8808b3b0b5fd800eebfb930251f9ba8f418f8480da17f5258a1159f880a. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/DEC162104026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae20cb6ef25146685f6b9f0f569aa1c12fe15f2c4cf9cf47e1755c7b9a25ae15. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:22:24Z), 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/DEC162104028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d34921681de7f4837cc629e74e77fe78c1141b0055a651998c96da6cafb235. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:27:10Z), 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/DEC162104029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0aab87f51989b2eb378b7b90181b82f17533d4ab804f8a0f9d5cd4dacede986. 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/DEC162104034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06e4d9d0975fffde3fdb67b81f5e25a6e44beba52643ced2c47cbaa70717c03. 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/DEC162104035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7724f237b49e58a61f4c7cd01311dacc7ac99f70c083cc3a12b125602b212cf. 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/DEC162104036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3343df1d166ec05001b6884d65913255cb569ae07f203eb0d1fa22e67aee397d. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:07:17Z), 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/DEC162104037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3bad0e72c36bbe2f97c85f40eea336da8e4fbae2dae1704fdf03abb71fb32d7. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:43:47Z), 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/DEC162104038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645e83b58a1e56e4ec97a7cc9de2cd452ca241c4ff526bd7758be6ed2140b820. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEC162104040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b2c08b22b45c97e124ee915a356c4fd31fb917723112e0ef5ae2505d8592e1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEC162104047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558dc3058ef8e6b950c7347957da780de7ff1813b1080463318e6d0d18e465c8. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:00:12Z), 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/DEC162104050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9693465392ab9586343bdb195f7f2ce8aae4c854492abdccdb440c7c71f93a7. 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/DEC162104056.