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 0x264c8b7147238dee173af0633231748cf91f1c9ba79d708348b7d02ca904dc6c. 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/d3874f6c-5d15-48e7-b49c-bbe8057b7e07.json and https://artists.proofprofile.net/proofs/artist/d3874f6c-5d15-48e7-b49c-bbe8057b7e07.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Freude ist im Himmel (Vom Verlieren und Wiederfinden)
Vater Martin (Hörspiele und Lieder zu Weihnachten)
In Peters Garten steht ein kleiner Baum (Lieder und Hörspiele mit dem Wetzlarer Kinder- und Kükenchor)
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 0xbee50c7922624c4d546b7cff6eb80b35c6febe6cfc388a5a15ecde30ba8d56c4. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/DEAF40400527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfb7ab6f0cd0426a960f8ec75f72ea5f4e24dfa5512e0b62a34325546bb6253. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/DEAF40400528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de623448c29cc21fcb5b4fb846058f3e998ef11bd00f4e6129924c8599fc36d. 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/DEAF40400529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a9e74583341fc7715a70ac87041eef09bf8d265f2021f2937a33cb67bb10cf. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DEAF40400530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a6ae87a6ffc01c6d74c6777ed9b76d592519913db6c6d8b6c1c80cda4b1db8. 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/DEAF40400531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f584d0df5faaceb9471fc010d43937cee256e4bb28238e4e6f25f857ccbb5c. Chain 2 (Bitcoin): anchored in block 956775 (2026-07-05T10:41:06Z), 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/DEAF40400532.
Seht mal meinen Regenschirm (Strophen 1+2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530fab5b01a09b5d0a3a764c168cb089f18a0792afb9df45ceffa7a4b2845f6c. 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/DEAF40400533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313040cad5bb1980dec831b9304924213604ea2a5ded34fb2531cb84ba9bcc54. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:19:59Z), 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/DEAF40400534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c636eb93e4a0834151724f186e11837306e779128415db262aaf4d239f15c8. 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/DEAF40400536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f1ed250eec41eb7e93bd0a519642216b056c7bee4ba23dea2f122aca45c9bc. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEAF40400537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5a39bd00a403fd9180f37b9a1b4706910e29686488e3e16fbbdb91a943417e. 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/DEAF40400538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2e484dc32a18ef6e748d1aecc038e6e1ff5ab285df84acb818ef03cedd56ba. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:37:29Z), 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/DEAF40400540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf1f0692068090bf48f0baf47ae26277bacde11de16a2ae04bb5bd9fc7b8be6. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/DEAF40400541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446f6d309e71c318e12b03701db95bf71cf945f1f2006d7dec8d9d439dda41f0. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/DEAF40400542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9022307de511d1167c7b0c38d607fe52f67a4c6f3baa10fc2ac6eef029439773. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:52:17Z), 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/DEAF40400543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab0e824efa8b80086da29041835eceae9e572bee6f8677d1feb213b2cbff9a1. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:51:42Z), 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/DEAF40400547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16766b09bdef554d571494a5214866dd4d78fabf7890924cb636a839e19e3023. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/DEAF41500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca63fff2c4087968fe10a409614c0af2f80f6f545128ce639964269ef7b24079. 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/DEAF41500022.
Betthupferl - Lieder und Geschichten zur Guten Nacht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670038d40e62549ce171a95e3375e2ee9b3cc0168887324c513bc0b2b819bd30. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/DEAF40500124.
Am Himmel steht der große Wagen (Szene 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0528b7f7e16497f07c0d7944120829194832e7e38fbbf47e1112ce63fb507d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEAF40500125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddd11d9c1cc363c2e53c14a2df3ce0897a2b22590bbbddfc6e96bb00743598a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:58:05Z), 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/DEAF40500130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8812866b9e18a10afb83ecd5f29100a6938df215ab9b4b684d6a6a93286ed8ed. 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/DEAF40500142.
Es wird hell (Lieder und Geschichten zu Weihnachten)
Still ist die Nacht - Die schönsten Weihnachtslieder von Margret Birkenfeld
Aufregung um Mitternacht - Kinder-Mini-Musical
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefafecdc6b002c74e4c42f7e183d6f94cdbf289dce6f2ae771434e5b8af59e58. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/DEAF41100426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2368488886c1687a3e857217eb670e7c1e5d3bc63c6502c58c755c709406065. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/DEAF41100427.
Du willst mich, Herr, mit deinen Augen leiten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3078fc86a7e9a8fffc46e5f0ff9a0897652adc01ee1000850a64a205b3a0d17f. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/DEAF41100432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3208fab05a8adcffb233368238b192b4ece7dfa628187fd474dd50b3196bf5df. 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/DEAF41100433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f175e50e472254b61ae09d5ff128d771e68da7cea03941c535ad532e2d7024. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEAF41100434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14bad7b19f10452123be1b67dd525f10e292762900c9737d9e0f0ff4869f942. 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/DEAF41100435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1401b91c7f77baf442c6d95bb546e6e4355aaa4402803d4a1a64e3fa815a6407. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/DEAF41100437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d022adc083994543501c861ab23cb23394b18ae0dddcbadbe3387bdcebf0bc. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/DEAF41100438.
Für mich gingst du nach Golgatha / Kyrie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d60d7483bbb68d81edb5f480b867db3a014b91a738323da98c82a9798bb4c5. 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/DEAF41100439.