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 0x1beef2a02b2deb53f64f260b9b967e288c8f19f3c64c114f27075d5ce100fb9b. 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/f86cf8c8-0f54-48f2-8b0f-23f2c3c1f136.json and https://artists.proofprofile.net/proofs/artist/f86cf8c8-0f54-48f2-8b0f-23f2c3c1f136.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 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 0x504ab8394aefd402471c8ef78cb7ec39722b81bdbdf3df713ead97168d0e8438. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEEQ81900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde150a083bb949e21ac19e923ff2e4b962e981b0b75c64b691b05c8cfc6d7c6c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USZXT2454233.
Bitte bitte bitte gib mir nur einen Kuss
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9889bcc83560dbe0fb43788149babd60906d0564868e56562f1577bd5309f0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEEQ82200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f327a8b9d4be79d70a0e98a3eb29e88a73e6a4b2b7e03dddf7fb8fec3f0133f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEEQ82100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a321489b0ea6a41e83855f7066acc3863e123220e38a0afef9d12c7151afb4c. 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/DEEQ82100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fdd91bd6340d1d94181b27cc70bea6ff947e39e804b2453bb52acd05e7a5af. 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/DEEQ82000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6812029ce4e76df91a171764933ec6501456513f53f1f36e614f294cac3c5b3. 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/DEEQ81900113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0035f390b0a5567359816fc614a3dbde3307971dda5ea1cb9f02e0bad6e3b426. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEEQ81800076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0275f51000b45141e9095f007bb6adc7a081ae5cf369c249509e0ad71518938d. 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/DEEQ81800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47dff0edc2dc64dfb1ed1122f7f3a67557b07857e27014dabe47b75897a11bb3. 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/DEEQ81700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a878e3aee51d41bc1cb3c4662da119d372a9261fe5d2e6c8ce5f7ed828b517b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEAH71600836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8634036f60da747c5fd9204cf904607b5a068832a3f46676812bdf439a3edf59. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEEQ81500084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28fb6e0097694cf8c8ae6ee5cac809639c8d8fab201762bcbbbe23fe8085e81. 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/DEEQ81400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e50ddfe620df0522ac642bdd49aef055bf42057eebf1abbbda6a23cff964bc. 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/DEEQ81300035.
Sieben Berge (Sieben Tränen Aprés Ski Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3b1f599633dfdc2631dc0e3bd088eb2314cdbd2a50d5a6c1af14372dfe5096. 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/DEEQ81200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1d37e9f0b81c228f877219e6bc40ca72715028d6c7f3ee78174aacf0d6e18f. 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/DEEQ81100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb942b235e2c06e0551179b3704d7dbd607610c2420ccb95517ef9b17090bb2b4. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:30:47Z), 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/DEA811100464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc102a9313cb2c69c725ce98e658d3074e6e62845089b89f3571c92ef11465ddf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEZ522100540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b238f3cd55a913fe49a441ab63da486eaed85ceb6d986b0ff701fb3c65561c1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEEQ81400072.
Ballermann Wiesn Hits - Oktoberfest 2020