Ich + Ich (; German for "I and I") is a musical project by German musicians Annette Humpe and Adel Tawil. History They met in a Berlin recording studio in 2002 when Tawil sang on a production that
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 0x8b64b85a417424ae951681a7436721551e63c235b26036a7d343096b1cb33bfa. 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/e426e204-98ee-4191-8cd5-981e5569253e.json and https://artists.proofprofile.net/proofs/artist/e426e204-98ee-4191-8cd5-981e5569253e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xa8d90615730cc3dd932bd3a2e618f7cd733872ddba495e12cb95ff5607708a8a. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:59:32Z), 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/DEN120500268.
Dienen (Radio Cut) [Jan Driver´s Club Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3522762a16b384719b658a97d0abde98587b938612e0c6372ff2ae3e753da5f7. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/DEN120405619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afef8eb883c330236352f326a3ce724019490c839c6d5fb1a668dc4438a29c4. 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/DEN120500261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6caf9ec97fe3e8774e1b6810a78ac8de10c746f2dc2f08ac37b060cd7e1678. 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/DEN120500262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2ea3279293c19413c9b9baac10fb821ba3e0d31458dd560328e0c54f599092. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/DEN120500264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7053fd3aae127bc958c280c28a0b745e0cd4b05386c7a5d732350e058fdaac7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEN120500270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a6f5b8850b9e45f47fca9690b8fc71c93885b1dc8c714bc4d9c446de876c51. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T17:24:41Z), 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/DEN120500271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69cd400d90d54f97dca8e37035c7497e4ce4ff9f136563687d426fdfeee38433. 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/DEN120500265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf6cf6ab119b0e5107cb7af662ab23c3cdca2af096452cfbd55ea8c95832044. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/DEN120403587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817a0d34548d116c490b1dba5296dc7df9dcafc836485fc7c9e8ee5b5b4d0016. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/DEN120503927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77b4e8989b3cfc673fac376a9043719f14c93fef889939cd4b962112ec6226c. 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/DEUM70500309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7386535496cdaadf3688ca7a56f1957db63f2b28c486270a3f75f27857b5d0. 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/DEUM70502486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2564c801414539653291fb7a90e82d9c4e5ae4e6435fc2b252dfec5cf421a3ed. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:04:52Z), 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/DEUM70502487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca3fc0af0bbf09c74ab365850960ecdb430b871c74df15368b445efce574515. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/FRW772435696.
Vom selben Stern (Bonus Interview Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd16ba512c6948c1cfb3f87efe9fd464b2066427be0fc022a4c6ceeeaac3c1a6. 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/FRW772435693.
Vom selben Stern (Online Version) [Exklusive Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473599c27d4c7755189c2d2b07d35cf1bcc1daf522d61fb0ee772f9352441113. 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/DEUM70701432.
Vom selben Stern - Ronny Rockstroh Radio Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587275c47fb9b929aa14658b46d7a0e55d534361bb7a976297fee928d41d4041. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEUM70704751.
Vom selben Stern (Akustik Version - Live aus dem Proberaum)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14452f8d5e1977d7072f9851dbe79f776ecd9db796a6680f4885197ea1f59497. 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/DEUM70709732.
Stark (DJ Divinity 21 Nite Kaoz Dub Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ec454a04b15f1e445ee3bae08fe974ebcecf9ec0a1ba73ee952fb584a06fd2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FRW772435692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2913a0b52c686541e11f4a3083293e5a3960426b8b2c893bd4a47c4d7869fb72. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:49:13Z), 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/DEUM70802231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9f8ccaba8af58847ef944e2ac863059be4340645b481866d1017f36d7d0fcd. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:36:43Z), 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/DEUM70807622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473599c27d4c7755189c2d2b07d35cf1bcc1daf522d61fb0ee772f9352441113. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEUM70701432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4646e6e78a4ba7e209c1c0b99e334020ebaebc4150cbd96c20f1ca47ee5c3268. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DEUM70701437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86640ccc844b7b73cfccb07042c696f11768bd56422f5f4c87c288804b412b1. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DEUM70701443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a14ed2b29b8d6edf6e097df8460d966ffbe34714a6b3f8b576459b52fd13d4. 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/DEUM70701440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca30df6ad1a5386f379021b39730f44393e0e9acff8a9291d9bd56baf265c9e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEUM70701439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2c024cad9c5946499abee470a4b0e89a64c04a22549df1efb684e1d5f7d280. 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/DEUM70701444.
Du erinnerst mich an Liebe (Akkustik Version) - Live, Kesselhaus, 2005
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b34407c1d0d0cc25d8ce68de3a9aed64628f4d8298f050aaeaa478185dbb30. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/DEUM70705890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ea436e0d6defb61fb769373fc290cd0d734d817d7438298079cc1dfee216dc. 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/FRW772433618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6052fff4bf90985df01af68495d0e9cbee0d2036a1108c42cf00d8c7e8d3ddb6. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:50:41Z), 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/DEUM70905137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e3f6086865cb40cc5d7319a0d44e29875c87165249a5e1b05f84b4fa86b73a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEUM70905138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63b716535a5e518c9ae54e26da7a7d34a420f3297da846b3072e43f13336181. 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/DEUM70904780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ab05bc73eaf39a1dd0e91a79ee5ce26572c3dcce3389e4b87a781be22679ee. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/DEUM70904781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15d361d7975775b04e2f948e67c62072cb7be4f541534d8e9050fe87817fe67. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEUM70904782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99846d0ee74c2aef63ad927565a8939d1f88555264b18c7efa19828f28f7ab72. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/DEUM71015993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdef90bec6363b5d87c0bbc51b1ec13f8e10a45240c02091c8a628b10fb5631. 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/DEUM71015992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce2360e3167e037e262ce840f0aab08811c304d04e192b3b746871543c45d44. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:05:11Z), 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/DEUM71000387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec20970c2d139a5d0e5654bd8167342a2670e2486b94e8dc1bf79853fa37027. 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/DEUM71008380.
Halt dich an deiner Liebe fest - Live aus Berlin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68cfb7811b8bd043ff209b048d6b86c5dc5f3cf5afb48d57384df631e7f00ab. 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/DEUM71017620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15eafb28248e750cdac46c72f743cbe930024bdc7517ddaf217e0984f845578. 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/DEUM71017607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4b210f755fb06b1ff0a13a661e273ddee20202fad66a3f417b2d23a6a0a09a. 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/DEUM70904778.