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 0xa1d2f8b3151ca740b351bc08756d97b1ab7a0c200bacb85f4a8fc7cc12429d7d. 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/f02ac524-24aa-4dd8-9c77-75dae58980fc.json and https://artists.proofprofile.net/proofs/artist/f02ac524-24aa-4dd8-9c77-75dae58980fc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Serge Prokofieff: Peter und der Wolf & Saint-Saëns: Karneval der Tiere
Peter und der Wolf - Vorstellung der Personen und deren Instrumente
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 0x93f0030f9bc30c559edb9f22123b8995a37f4731e69bfcbf66b351744f71711c. 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/DEB518200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bf598ef1603485a4ab07a9cf5276156aa7df398b4232c010b77010275051ba. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/DEB518200005.
Peter und der Wolf - Der Vogel und die Ente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d31092ecb142225fa05e609f5d2fe8955746ac8db5573be3900854273217c13. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:46:57Z), 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/DEB518200006.
Peter und der Wolf - Die Katze schleicht heran
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8c7c5b738e5e57594481122e696339d2ed612ddc536381645ab52ad44d449a. 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/DEB518200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc06382f44960e7de8cd780b1ff80b7dae0b8027a8868d11b6f0c621788c30c. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/DEB518200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f9578a32692e6180c2880a9219f6fb12ec0a8f9d4a1041092be66c2d723703. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEB518200009.
Peter und der Wolf - Der Wolf, die Katze und der Vogel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8109681299f326ff241ea8079628edd4c34090b053d52d390ecdf56bbb6330f9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEB518200010.
Peter und der Wolf - Peter fängt den Wolf
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4460d4984f952e5b1a2fe11648ce0c1a6112d876b8468127a32048ebfea1d5d7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEB518200011.
Peter und der Wolf - Die Jäger kommen aus dem Wald
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cdd59e0e7b173a705c8eecfbacfff04ac7b50632b6b2daabfdd705566bbaeb. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/DEB518200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572f8cfebf1ba5f25172ed787f3fadaf321e2d12bda44ba3e60806ae87691143. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEB518200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ace97bd30cc8c74cf74fb28612ac68b2d22c1997edabe738e948581611e269e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEB518200014.
Karneval der Tiere - Einzug der Schildkröten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0562685071fe6b81148b1cb1c1251c975a15b6b5c6a619c7da951ce001d66f6f. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:01:44Z), 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/DEB518200017.
Miklós Rósza: Das Dschungelbuch & Mark Lothar: Die Geschichte vom faulen Bären
Ein Stern geht auf (Elmar Gunsch liest Weihnachtsgeschichten)
Lustige Geschichten von Quakerich dem Frosch (Erzählt von Elmar Gunsch) [40th Anniversary Edition]