thumb|Greger, 2008 Max Greger (; 2 April 1926, in Munich – 15 August 2015, in Munich) was a German jazz musician, saxophonist, big band bandleader and conductor. He recorded over 150 records in jazz
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 0x6c9063604c7a5c36dee353c9254c22bb38b47458beb26b31376c23f0ed89cef4. 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/8ff19917-76fd-4254-af59-0550d258a359.json and https://artists.proofprofile.net/proofs/artist/8ff19917-76fd-4254-af59-0550d258a359.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ballroom in Vienna (Jazz Version, Stereo 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 0x297da74311af8237a0e2a1d4ea83765cac51ad0260d26f1560b767018af8aa56. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-20T00:27:42Z), 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/DEF066906110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c81558dd9683e2c29399307284066bb243288be282d1c7976717abccf72172b. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:28:38Z), 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/DEF067006120.
Klassisches Tanzvergnügen Mit Max Greger Und Seinem Orchester
Max Greger Plays The Best Of Glenn Miller
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8a675af9859b576250ff41afa1827dc55d0f525458e07a5e5f585c0e769530. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/DEF068707030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb820b681836ec72e58ec5b44a227183342c612ef1bdf727969e793ed840b01. 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/DEF068707060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaba7d9f3f9a0c160192f4fa94ff5cd869515bf6e198b29c8d2f71b1ec15a7da. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:05:13Z), 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/DEF068707070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbb616d5b6a3bb94316319f14f8c4276e093445f98b0dad17c119cb4d334c5f. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:57:32Z), 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/DEF068707080.
Die goldene Hitparade des Herzens (Meine Welt ist die Musik)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0a4d06c2ddb835741464728f683e744af6353f7a89ec43780b1c5864b1ff2d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEF069002270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16998ec816facb4b5ed987d72c0c203557680617647a2f6081b47f8215f03a1a. 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/DEF069002280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d05e067601a167daf72b395cb0b7e14306dfa99b31a1bfe1acaa2880f18f103. 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/DEF069002300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0dc382670007bab2570ce0c9ab73bd97e0176d1d7d6c28577e21c133f8ddc6. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:51:38Z), 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/DEF069002310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3191668e1688601012f19dd0ab32aea782c4b461121e31142cc3e86c2f7c3744. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DEF069002330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42dfef65a1e5f31449bda989facab2943e4ad15fd6e6804792a013017d503b9. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/DEF069002340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2163693ebcf5d84e90c06f43d2af56773f57a009b9356c270839fdf601db847a. 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/DEF069002350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d86189b7fda0c38219174b5c82b391b372aee49e4394fa6dcdf693206f897c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEF069002370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4a3921676c9318f2bf9cb4da0dd254f6504b587101c2f3540b27566b5dfb60. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEF069308890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2d638a9979d641b45f862b6753ed2a990df9b974da798be7998f711857cb23. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEF069308950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923213b7fb956a0cab922b3f2c08104239d0c38ae12b86e005db3ae1e8616d03. 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/DEF069308960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e291be8823b90ca392f7beb769c08746be369d4758a7a269baf10fc2a1d7547. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:14:14Z), 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/DEF069308970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a09ca2f22fab55bc1cbebce0c2719ed8993b63089b2f83398a318f1c6e70dcf. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:41:54Z), 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/DEF069506750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef7ec1a57768b7876e42c75a65da5c018d82aeb0263c9a56a961fd0df5e83e6. 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/DEF068403010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb3e91d488f384dbe5723a54ce9fef946d44e696a7a266add9f272c7d677d78. 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/DEN120000800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045160a12f97dc0924dd43224240402d37a37e26042246d8214ac092ff6e459a. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:44:35Z), 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/DEN120000803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa54bce02ec7d59d318cc7e9f583e879c445ed6e3bae6a8170177b57ec3ef0d2. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:37:30Z), 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/DEN120000804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07af22ce76830d7734570b58a0bbe12715edef480bb97f4e7c0668d437286ba. 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/DEF066912190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28055e13d763b49544715cec425505f3d663155f137daf89ff47b988811e2ffe. 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/DEF068707000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bc16344ad4636bef4d1ae7056f96fa98d2286ba2f48c49fa4f9362a690e33e. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/DEUM70600457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c1c8c358bdc118015a190bedf0799714109d41fb97c5c5598bcf42a6186c1f. 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/DEF069308860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f258c3d53f61248c48d11426b414ff605b4d3ad0f8bc42c77cb6d52471789ac. 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/DEC979300235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf1e388270ab282c2890f0bafedcc4aec7f45cb92d4dd437cc13c27ed8fd08d. 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/DEUM70706813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46790ebb949a8a7e2127908af17d7f96049ef60683c2d82c614a2c4f2f6fc417. 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/DEUM70806275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c1c8c358bdc118015a190bedf0799714109d41fb97c5c5598bcf42a6186c1f. 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/DEF069308860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a9249380d6722b7697a77e101fa50b109fc481e58c51ed65b11e0b1d5e2dea. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/USRDG0224662.
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