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 0xb49dea5a415b7b307cf07d9622adcc0653ab66277c715e491da7192dc7cd937a. 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/3d8307c2-2bf7-4cc5-9b9b-53e3e63c2d4c.json and https://artists.proofprofile.net/proofs/artist/3d8307c2-2bf7-4cc5-9b9b-53e3e63c2d4c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Trumpet Concerto No.1 (Trumpet Town) [feat. Bratislava Symphony Orchestra & Johan Plank]
Der Meineidbauer (Original Motion Picture Soundtrack)
Alles Ausser Liebe (Original Motion Picture Soundtrack)
Die Alpenklinik (Original Motion Picture Soundtrack)
Afrika Ruft Nach Dir (Original Motion Picture Soundtrack)
Annas Zweite Chance (Original Motion Picture Soundtrack)
Die Liebe Eines Priesters (Original Motion Picture Soundtrack)
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 0xd0df519952bb7a3b8a407e1d21b3b88ce97d96558118b4e0e07db7c9b740f838. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZFYZ2190745.
Symphonic Dimensions II (Mixed In Hollywood)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911850812b29b79837e1a2ef9e65d179320328f97ee54c8e0cdab03f4f154a63. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZK6J2033477.
SYMPHONIC SUITE FROM "DIE JUNGEN VON DER PAULSTRASSE"
SYMPHONIC SUITE FROM "1805 A TOWNS TALE"
The Pied Piper of Hamelin (Der Rattenfänger von Hameln)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5447819636b413c5e76019dfa31e07f7774be656b5043a54047622eab7f21929. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:10:45Z), 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/QZTAZ2232101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31802b45043692a995c0af3dec5008ef697a54129dab12a32e7403ea890289e8. 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/QZTAZ2232103.
Symphony No 1 (The Borgias 1. Alexander VI)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383c29e39d92f961ee04e094fb405a3051990587e596216dbc59a0fd0f770390. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZHN32394428.
SISI - KAISERIN VON ÖSTERREICH (Sisi - Empress of Austria)
SISI - KAISERIN VON ÖSTERREICH - Sisi - Empress of Austria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a2a43bd4d4f7f414976aca98c2443297b86625c6fef2e61d33172fcf5a4bdb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ATI282401701.
FROM ASHES TO GLORY (THE STORY OF A VILLAGE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb639a0933d58cabf588d1cf0675404aa685d87e437b8b1ce97ca05b50c2d1a6e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ATI282500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb0b48ba530da3091ae9226aee376261405dbc6c1cf369828bbaec3f444109f. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:36:43Z), 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/ATI282500401.
THE MUSIC OF OTTO M. SCHWARZ (EIFFEL TOWER)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4389931ef80feb40f45759508b7d91487e9bb7eabbf0d36bdeb5804153cd9abe. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NOCJB1501407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a4034ffd8053bc1a09df5a30a53094c9ce44cefe596c119b0d4311a360bb16. 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/CH0491512704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a74f709319af7a8a9b2e2f672fcb8b670b30b0cc4a928b215ecb254aca6092. 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/ATP570871140.
Symphonie no. 1 - The Borgias: I: Alexander - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27409cea57536e4a562851df3ae0d6e40381abe80ee7d79238f05f52487b0b8. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/NOCJB2401211.
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