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 0x176b7587b70111c38f12d3471cce5b8aecf5506ca2cad1412e29f737890f0c9b. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8e98c55-b901-45dc-9dd8-f9a99cafd58a.json and https://artists.proofprofile.net/proofs/artist/b8e98c55-b901-45dc-9dd8-f9a99cafd58a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Folge 1: Der König bin ich (Das Original-Hörspiel zur TV-Serie)
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 0x6bfb9225eff5cd3b2999b536be357b53cc4ab4ab67a23a98a2022bf2c7f1d4fa. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/DEH821602811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c4a9c1365bbf65b759237506af1f172232739704d48daeffa8a72894760d35. 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/DEH821602812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2d86708670cd8bf183a69c0d71360d0c9a9735efd42c6179d229b305c6d2ab. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/DEH821602813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44e14841ce195ad7d71cfe392dc32acda61e4f07b9509de78291ebda03230b8. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/DEH821602814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2c16889c0a94dfdc225ca07168e11087010fcc47864f79d48ba95f897cdd69. 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/DEH821602815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663fabbd906f1461a3932fee1e1c8afcdf69ce258893b39cd0289972c70fc7c0. 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/DEH821602816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37ff4af11ba682ad8df10d5fc7c8005e687b04f98dc717128cdcb2a70a069cd. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/DEH821602817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458f770c21e288c76f2beb829ad6707b80e071369d5ef462cf02da85f1f8b2eb. 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/DEH821602818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1395b157aebcc95d3a03b15647e974e30e2feb93b02c80ea47ac83ccbc0aadc. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DEH821602819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8265987b0abfdb8b0f4afea8856ed7047a19d78f893cf2fbd3175975970703. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/DEH821602820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5cdc8774fcbcb5a9aece56200ec9658b92553cc18bc953b29dc59ae20bb1ccc. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEH821602821.
Folge 2: Bananentyp Mike (Das Original-Hörspiel zur TV-Serie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010a950079a5385ce83512d1122181556f02d8054b7628a4ced5cb5572fd2429. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/DEH822502683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35854405d1de053308bfc70f73d903c8124789571f98596b351d135281fc04a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEH822502684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11546c6f2c53bdb3ead3aea5dafc5b2ae01103352232e15a7143bef858dcfc2. 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/DEH822502685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca1f2019d8f341721643a5ab0cd9bb6d29ceeb22f9701b147acf6cc5087db04. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/DEH822502686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84aa443b63f4e47847a3de16b7614c5f246497582051e023304f6d06d02c0d45. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DEH822502687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b770cfdeb414157754fb35396919d588a7aaaae8bb41b6039bc3df4884ca7fb. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEH822502688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f1e659b54d85049b554fa6c9cbe046fef60b6efcffdaa7ecc326ad99ac101b. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/DEH822502689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec2c83ab8b9f327fc3781a27c0763871f4d2f648896c5773bb259148be08a90. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DEH822502691.
Folge 3: Der alte König (Das Original-Hörspiel zur TV-Serie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f178870ac07dee89a1bfa9433f9c3aaac3cce7c4b7e2cb34f4b508145042b82. 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/DEH822502667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb628ce7310ecef6a2c9af67077b2b23c3d85f0da934d1dd6e5f640262d2f6c. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/DEH822502668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebe83e101c401cb220cecfce1039589b0474b97ace39fa0633677d3f7bcee8f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEH822502669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30787cba0dfe1449d5f693151b259f417e20d718be0902f91a30b59aa177398. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DEH822502670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3a9f025857c07d80db4ad926a6442035b0257217c9c258762c687c0ac637bb. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/DEH822502672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b511633261ac87a9aa33b9f408fa5658b519e01592e1d3a6a431dd4f538ece. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/DEH822502674.
Folge 4: Der Regentanz (Das Original-Hörspiel zur TV-Serie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf8420ca6ab4f3207490e08cd0fac7e3c0a3cd5a0e61f0279eb80ccc9c9fcb9. 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/DEH821603067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b395508aaccd48288355c3535f1f60e2a52e756a4609b983ce1a8385ad7a97c. 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/DEH821603068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28839b6672ef57e105290b642128bd4bc7591e74b34c7f947c6aa426f517fed. 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/DEH821603069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191408ee314527b95220e9ee1608714bf1ce127d0a65360f8d8ea0e00e5f59b5. 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/DEH821603070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70155a8b0152b58505ae8b374ce25c952163c103e2d316c2797d99339ae4591a. 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/DEH821603071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7e7965cb19169ce5ca923db60c6b17d28123253996d375a98b2fe85ca243a5. 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/DEH821603072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdee847b266f6a0e82419fd627df80880d8fa759f7b221c30997540037a17435. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/DEH821603073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86ede622bba4680f73db573f379cfbd7bff089b457203d9d38b573f5c5b4cb4. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/DEH821603074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84ec17005c16937c2aa6e17301be8546ea49e59b55278ac2d93f0d8994593e4. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEH821603075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd950ec535ebb478c15e31b7ab70cace7b922eed13638d74739d1f429f2473c. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/DEH821603076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaaa9a425215730781e8e684cb4c4490199a67de3421ce29194ae5f8f140e0f8. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DEH821603077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5427f5c4f7ca9ceb0ad93cc07482cc6e57daedecb0b42a91d5a823e22f8c600b. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/DEH821603078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8d3b7a6b1da93db35af4a868de537d0e1bca12224deffee95b338b47bbf85f. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/DEH821603079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6e4ea798811845ca762fc45ef1d012887377760ab9656f63004436998b38cd. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/DEH821603080.