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 0x370c506f50d0db04366e9218cf9183b48053167f33fc373d980441abf72f67b3. 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/ec687cab-3cd8-4d41-87f3-9a7d9dbc7947.json and https://artists.proofprofile.net/proofs/artist/ec687cab-3cd8-4d41-87f3-9a7d9dbc7947.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
EXIT RACISM (rassismuskritisch denken lernen)
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 0xd0e91c28096df30e53376247ef8104f80e259b488efcc8a281b10da440efe246. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/DEVU52054825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd660fc574169b9a7651d92bfd38ad9af0ebffee9209a7674d9fed63f62c3b00a. 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/DEVU52054826.
Kapitel 2, Teil 1 - "Los geht's" - EXIT RACISM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4aebcc4afbac7831cd0f6bf97078042cb72b5a37700df829f65e6a8026dad50. 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/DEVU52054827.
Kapitel 2, Teil 2 - "Los geht's" - EXIT RACISM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ead340b894b76cd4ac2453aa8d8779db6d36f7550b66f63e3b38d3ec8c0d021. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DEVU52054828.
Kapitel 2, Teil 3 - "Los geht's" - EXIT RACISM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe60d7e66904da703c80b0d16776233d954c26b051a4526fbbd110112bbe26d9. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/DEVU52054829.
Kapitel 2, Teil 4 - "Los geht's" - EXIT RACISM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a775c9fb979ab8baf9bc07bbe180ed41dab5c78836833b2efe75da4bfc6a338. 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/DEVU52054830.
Kapitel 3, Teil 1 - "Willkommen in Happyland" - EXIT RACISM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632b9179e811194f1c77d8c30a47cda2278cf05eedb7a5bbee17325d1644d931. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DEVU52054831.
Kapitel 3, Teil 2 - "Willkommen in Happyland" - EXIT RACISM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9ee5863539cc9f79706716baff398e3de85ddcdb63c672847fc89a2a59b243. 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/DEVU52054832.
Kapitel 3, Teil 3 - "Willkommen in Happyland" - EXIT RACISM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028c13027feef600315e049981b49469e5e9212305b4278d1cd99f36471facec. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DEVU52054833.
Kapitel 3, Teil 4 - "Willkommen in Happyland" - EXIT RACISM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f8f55638db05991c1ac936a4bd0867226089a77b76c0c164b21ed4d4edb53e. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/DEVU52054834.
Kapitel 4, Teil 1 - "Abwehrmechanismen von Happyland" - EXIT RACISM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3342857f89c391c20974be96d0e4c02dba1747b10ebd59330ac0c22d358bb9f. 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/DEVU52054835.
Kapitel 4, Teil 2 - "Abwehrmechanismen von Happyland" - EXIT RACISM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2377989864a4778db9186d5fd370ad6c0976ff0b3d39003cc42c93ce05033d. 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/DEVU52054836.
Kapitel 4, Teil 3 - "Abwehrmechanismen von Happyland" - EXIT RACISM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582d88771bc5d5a8fb2a89c7495d799f45bd65e703ec385e7e681172969fb569. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/DEVU52054837.
Kapitel 4, Teil 4 - "Abwehrmechanismen von Happyland" - EXIT RACISM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44851c68dd5c6ca5581aa89e6bda2985f9b8eaa673862485f1ae019edbacc6a2. 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/DEVU52054838.
Kapitel 4, Teil 5 - "Abwehrmechanismen von Happyland" - EXIT RACISM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63760ba0e6032ea16981a11ffa32f0ab1438f454cd42b58f3195a1514f14da29. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/DEVU52054839.
Kapitel 5, Teil 1 - "Die Geschichte des Rassismus - oder: Wie Happyland entstand" - EXIT RACISM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362ef2e0fdeaf123ba426c069dfffff55d98a59a0610ba8f90a09edada18ee66. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DEVU52054840.
Kapitel 5, Teil 2 - "Die Geschichte des Rassismus - oder: Wie Happyland entstand" - EXIT RACISM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825da3aae9d527cbec1f008b15845629208f2a4c3a85817cf15d53dc40946520. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/DEVU52054841.
Kapitel 5, Teil 3 - "Die Geschichte des Rassismus - oder: Wie Happyland entstand" - EXIT RACISM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008cccf720ad315747c457f8925d09a692d1c230f19820c9c1f1c28ec2ab1902. 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/DEVU52054842.
Kapitel 5, Teil 4 - "Die Geschichte des Rassismus - oder: Wie Happyland entstand" - EXIT RACISM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca47fc1da9a1bbb4d0da37bc7acabadd9acd7458f2b5ba8c1bdc3817843b7f7. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T13:14:47Z), 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/DEVU52054843.
Kapitel 5, Teil 5 - "Die Geschichte des Rassismus - oder: Wie Happyland entstand" - EXIT RACISM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb834cc4a8fb854a8dcf109067191dc46db7f0e806302cacba92c76f7414957ef. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T13:26:15Z), 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/DEVU52054844.
Kapitel 5, Teil 6 - "Die Geschichte des Rassismus - oder: Wie Happyland entstand" - EXIT RACISM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501992d2bfc4ed08e99bb99695ae4f10368f5b73404777ffba25e9bebdf216a9. 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/DEVU52054845.
Kapitel 5, Teil 7 - "Die Geschichte des Rassismus - oder: Wie Happyland entstand" - EXIT RACISM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d69dff6408fb6dbab97f5eafd6147d03df8557b04c7cbb5c8c3140c04f12b8. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/DEVU52054846.
Kapitel 5, Teil 8 - "Die Geschichte des Rassismus - oder: Wie Happyland entstand" - EXIT RACISM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895c05d64c7521fe43a682c0e649bf75b1b8721ae3274beb8648f8b2b251479c. 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/DEVU52054847.
Kapitel 5, Teil 9 - "Die Geschichte des Rassismus - oder: Wie Happyland entstand" - EXIT RACISM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786e67961fd667f8f5fd6380a74450a9f80e2131a668b394f0c82e0c8df77073. 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/DEVU52054848.
Kapitel 5, Teil 10 - "Die Geschichte des Rassismus - oder: Wie Happyland entstand" - EXIT RACISM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f56ede96fbf26de52a913633235ffdf52b32940f99935361dd1cb171f6ab25d. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/DEVU52054849.
Kapitel 5, Teil 12 - "Die Geschichte des Rassismus - oder: Wie Happyland entstand" - EXIT RACISM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404589fcd2b224fd1a0789fa465381b71d09b3877a06cfbf95facf4a20ef86ee. 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/DEVU52054851.
Kapitel 5, Teil 13 - "Die Geschichte des Rassismus - oder: Wie Happyland entstand" - EXIT RACISM
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64beca898fa838f585871dd9f8fd6cf4ca46a3ff6ac7914587b6a43e7d65bbd. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/DEVU52054852.