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 0x4658e90b4b80769648681579ead126a8a61a37a93303c1689d97e33f7f0311ea. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8fc6d21-f16d-40f7-b2de-5aa3195975a3.json and https://artists.proofprofile.net/proofs/artist/b8fc6d21-f16d-40f7-b2de-5aa3195975a3.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 0x16d43949254ee7847ed0d208b00b008a303f2176aa5b43a807bb4c3f437522e5. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:34:15Z), 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/FR9W11914257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058523b6b36ac25eae90017d0e3e96b220aeeab9d86fbe2afacfbb30e68cb60a. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:31:28Z), 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/FR9W12002382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90a202cb6ff13d329245b872fad55222459f5365bd0faf506dd04d54afe3da8. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/FR9W12012386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad0ead5f01afabe57170c3a20d2ff0f1c0cea98bdc5a9b94c7ed9c966e83bd3. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:26:11Z), 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/FXQ692100298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef8405f9be0b8f485474a259b0ff98a5bc6d599c0792d53b554d738c40e46eb. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ATR981272185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa96606eae98e08b60a59a05d01d3a243ddd6e2dc78eaac47169858a576cef1f. 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/DEAR42273444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61179730e7a8f7591387c550b5048eb16269ff8a5b5a0ffc82593928a216a4d3. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/ATR981297988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf693f2aebcfd441f18d16ad9f0d7d9842bc6ad082c286a021210d979edd018. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/ATR981309811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea887053c286948517b7835ebd1a583319c57f232419712d7bcbcd9009d1d279. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ATR981315829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84e055e377489e11de75d5ba8ee0b048e7c9053bf13199045031dc7513d6063. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ATR981317730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664ae7151f861a373da28cdc846a9b31c2e9103871762e8818e57dd4402e3e0a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNJZ2407511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdeb34d664f67209669453e5d649035a9d6f3ad13f99995d4ac754eccb1bab0b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM6MZ1959358.
LiEBE AUF DER RÜCKBANK - Mr. Bassmeister
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132728f44ae63ac7a2e16cdd2884269caed3fa17eb19d8870a52ac47c08b9ea1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEUM72311574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106dd507f218cfc3da4f61f9335b39e275b24046ab2d46ebc790a69baecb709d. 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/QM6MZ1849969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22acb6c273b906cd8eeaf2576f7ec7a61c5dfe261517450ce5649c758aa89c1. 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/QM6P41878300.