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 0xee0f2f9ce6452d30810f0adf338993c2bbd0126dcf511f6e903a0d325b46ff86. 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/c136607d-eb75-4352-a159-05fa45b2e055.json and https://artists.proofprofile.net/proofs/artist/c136607d-eb75-4352-a159-05fa45b2e055.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 0xaa7647709df305e8c449010c969010960cda0bf8360f901ac05aaa6a75cd1548. 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/DEA340701637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a59b0955a44a617f106ecbc57cfef6340b56ad05f05d016045c9323a75f9452. Chain 2 (Bitcoin): anchored in block 957665 (2026-07-12T06:13:49Z), 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/DEA600000483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45cca83fce245d18f71d55cbdf9033db8eb19941106567c9f96262e5ddfd0f11. 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/DEA600000926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5597772ca2d2293464ffe921d7f60920ba8e47e05effbbbc85c34f2c1ae3a5c4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/DEN120500801.
Ich zeig dir meine Welt (Die größten Erfolge)
Wir singen deutsch - Der Frieden fängt im Herzen an
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdeda8be383703e0f996d14b78f89cb66e5f72c9277a3af0119d8f3278a0538e. 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/DEBH30000004.
Ich brauch kein Meer von dunkelroten Rosen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7832a5bba0541026a8d811b40f11d3f8e6e80fa47c88d2cf32412c3ab7e54b. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/DEBH30000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062f8956efc4993dac384e43092ebce40fe9e05e3cec04ee3fff5a914d33be4e. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/DEBH30000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e111ad278d8cc7631a3efa46d1a9b826299b0856e15467ec38d5d16f47480a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEBH30000053.
Die 22 besten... Hits von: Mara Kayser (Musik auf Deutsch)
Schützenliesl, Liechtensteiner-Polka & Anneliese (Medley)
Ernst Hutter & Die Egerländer Musikanten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70b0e63341bdab034821566e37f4f24e56fa70bacc71ef735a4ba6488554f20. 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/DEUM70806966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4983c0090cd84981d8c140e9a100a78766f1e5033c6e6b96b0f40ea192ba907. 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/DEUM70806973.