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 0x55ffee985d7ce705193e6dfa02174e3948fa7848edbb7fc863e5167746ae4caa. Chain 2 (Bitcoin): anchored in block 953903 (2026-06-16T07:05:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1415f220-e934-4220-930f-1faa0a970242.json and https://artists.proofprofile.net/proofs/artist/1415f220-e934-4220-930f-1faa0a970242.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ewigi Lieder (Hugo Ramseyer zitiert Zyt-Dokumänt)
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 0x5acf5dabbcc89232e42403e467c4b1bb01da1df99ae6e59006ea2272330fdbf9. 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/CH1080701551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da9989beca6eee57fae59c4ea9fc6e3bacf3b2eea4180c0fcbf3890ee95ae4b. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/CH1080701552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57fee7ae72c30404e7249a418e95fa336d4b63372845b8957cea6d2b77d3c76. 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/CH1080701521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7affcdc1777bbd8c07b0c19aee31c4d846d02d9f382c003a66fb08b1ee9eb391. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/CH1080701522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006542894e83373d0d95531ee4171d9433276b23d6f4f4ad2c57b0771745aa92. 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/CH1080701523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0f70f115c546cc059f0e1caf72c094cad3041fe402261521544e28ac20bef4. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/CH1080701555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac7eb502c490bde5f66cf0e4705bee5ce48b17b9b4b7712e2641a1dec8b1b71. 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/CH1080701556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adf4d3885dc3ff707f2de8cfb7cb3df819610bbccc60a3f7aa8a8b275167de6. 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/CH1080701525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3619711a73c408517d93f9820bd3e7c7bcb25cb6540fc180c23385ba284e690d. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/CH1080701526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fe5541ef155a2e82a91e4e72740877fbf83313e6cf4c0d12fbc11b43780009. 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/CH1080701558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecf0f394c23d4e6e52c0752cf8823acd0b293487a06c9e7a054ad724bc7a7c8. 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/CH1089200290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31729533f03f3425295f7dc0662116ec174c360c07c97dde383e0fba90a4a388. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CH1080701563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1bc14e356d03cc47d838a80d15cc8571d039092be829fd097c4dbf1e22072f. 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/CH1080000568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbce716ed5ae2bf8e8e630b47d51dd2bbb4ecd22d65930e86fbb3d175c4a943. 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/CH1080701564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90a9ba6fc960c26f73d1b6e3accfe7445bc50cad6e43df79ab55e61e7867cdd. 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/CH1080701547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110eac896fce990058865a73fbbc4ca755d7e5572686173c46f1da867224ba3f. 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/CH1080701548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f543e3c3557c4b7abf91132c37d9a214a84063d71bceaa94761c9d2a7e46c8. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/CH1089501447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49233342bdc93b8ec21c2bbe742bd06c7e871878267fc28186fcff8ad6c03e2. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/CH1089501448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fa697ed51a5d488601de9814d26cb048152e7fbbad35fc5f0c22bfea676b34. 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/CH1080200423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6ad8337c917f965e79b8fe0a39addcf4c6a7022fdec06ca7ec07e1a2ebc4fc. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/CH1089501449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4403e5d971afa28ccc1d36d533616e7b2f2851130be5a68e24e4af329fc19c. 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/CH1089501443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eff1351b1979b53b80ada0a400cb8915cc2403eb2a25210b82f0d05b9e2c060. 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/CH1089501456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dea1c3baa39f89c660ad09dff8a40b82a6d1c15735bf0a993ccfbb92383421. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/CH1089100720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e56532a8e7212a8df5e90ffd07378bd61659e84a872c11a7d5ab1a406a3d960. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/CH1089100729.