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 0x02c28287dfe887cb02d39be8655f33f93831f8b08da127997c0621fb4b85e93f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d2fcce5-60ec-491a-b2c6-5afd9caa780c.json and https://artists.proofprofile.net/proofs/artist/2d2fcce5-60ec-491a-b2c6-5afd9caa780c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Am Borsigplatz geboren - Refrain Version
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 0x872977a0a7897b6f11023346f0510590f4f9ad375b723b2accdabec41e13b1ef. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/DEKK70800003.
50.000 Borussen an der Spree - Single Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564be24117e1122f4a085fd0d50d67fbd836f36d124ce7e938ab2e24fab6a5a3. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEKK70800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fe9296e09a854a2d0e6931e202bcbcd672d99965fa2a35aa94d68a065c999a. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/DEKK70800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73c0ac8df84159db96105b9e91365abc3a2d0f530174d5fb81cabcbe9cc2817. 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/DEKK70800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12775cbba33b05675b4931b427752f88a4b1cbf049446f1f64c6e639600e6dc0. 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/DEKK70800073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3390665ed0da9081a01bc94db8c35f6cb38ce026421e2f03cd7521627dcfc49. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEKK70800066.
Deutscher Fußballmeister ist nur der BVB
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9662ea808f25b420ce13d0723a9c9794d04328e8e9bf5a4b8e84967b6274bdd. 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/DEKK70800072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3168258b92deaa39a3c42fd5d8f7308b42cc5292a4a142fa1e62d573a402e19d. 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/DEKK70800069.
50.000 Borussen an der Spree (Stadion Mix 2012)