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 0x407f208a781e7ec734b3c113cf02bc0e87b41f18c40c18e04400f527c8279288. 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/a5752d8f-db15-4eee-9e3e-ac00835a5490.json and https://artists.proofprofile.net/proofs/artist/a5752d8f-db15-4eee-9e3e-ac00835a5490.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 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 0x4dec84d02c4834c6d9b1b5840cff9ebf6fd9475b9aeac029668738d702386e54. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/DEU201000149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bf3dd4564709dc20e677062b8668c87f42b04f692d513d3fb285ca75aa8788. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/DEU200900119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b0b3b03026e98db62bccc6cf4ba1bbda206812526d8f911e735a0b2085b27b. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DEU200900126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395d64abf7d033eab2ed0644469ad7f6688d9aef3e75b231150da6b5a68857fb. 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/DEU200900128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac04a728fda9adc0fe0bca6b8f497aced0076418d548345cd7398eb043f6ada1. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DEU200900131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230920bd319182d02753ec558a68ba0c804a6893bb7a040346f618b40847f752. 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/DEQX41200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d8b49da8ba34e3af9571a22c843569882df6a878be37521c99e79d15fe849a. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/DEQX41200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fbe0dc6153cf78440bbb3991f4fa6c2ca0615e9421bfc9fed8d466e33584fd. 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/DEQX41200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d4c3cdf4e405ae8788c4401ef2e58950f18bd90cf2bf382e40d2a1cb390d3a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEQX41200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226f32c136051b58e3984b178aef1ad68bcc88db58f6acd3fa085ad5f318dbc0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEQX41200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e51046d71b443e5feedf15b3ea3a499920cf1a7eee3383009e417a175d2aadc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEQX41200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441bf858794df8c55aede3b8f89e153f484e9de0a7cafd4601031113b00d3406. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEQX41200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8c2093e09f980a92b5838f110dad3a28e7e6586cbf42a0cc03377666da3c51. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEQX41200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ef850ede1b13c9bf52e24d0a1abcbc5eac5380b740f811afccd39f0f20e40c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEQX41200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6d91a03ef4b61e27ce6a75d6bcb47c6f75447424d15a1b27dff0ac9a20d60d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEQX41200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c62aa2445f432e842d1d4a75ddb934e4b8954c88a621e87d70ca27af2c2df4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEQX41200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfceeb407ec0fa2ad6544e9e494098483ee7784b6a0001f4fd20be1865c01004a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEQX41200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c71bc9318cc0723c02c80b440a9e6e5ccbc707f3842b6a06ad04f1186569d8b. 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/DEQX41200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25672cc0d493639c7190c0da28350b66ae7a6e1221f1fc9b637bd42e00b90c17. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEQX41200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e14b01f75a874c4d0dc00f50aeccc790fc34927d24a7dcf020cd1853880500. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEQX41200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079c71b0ab725042a90f3fbcf550ad6a42cf512f92afbc1d500ffb2dcb0f49b8. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/DEQX41200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9b69f86e0d627a27e07cb9315dc207266bd3a3cbd88431077c550a975398bc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEQX41200062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b55752dd9e7fd54e79c15f11b02b5fab8ca7f9e3d53dafef4f87e5139345b65. 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/DEQX41200064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2cc5ba80554031a816934a10b34e740b41546163aaf583d86199198aee54d9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEQX41200066.
Wir Sehen Sehr Gut Aus (Ulliversal Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7ff76a8f3ac2c8d45453044b0272258609866fc9134de62bbe16fd3ceb118c. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/DEQX41200088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49b884f4f1d50c111fc339b79625dc5f2a1a7de166c156881769433a732832f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DEQX41200084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8829525f48f4f7882af0293899cfdc15d8befc55eff6869b7f146cd1d50a1828. 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/DEQX41200106.
Gepäckträger (Live auf dem Deichbrand 2023)
Ätzend Fröhlich - Live auf dem Deichbrand 2022
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc277a48c7af263c9e8a01a55ffbee8bd776e34822f5bd5978c06e5484703bd5. 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/DEQX42500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbe8d3d1edc0bb7b930899bcedee9cf32e5451742f1b3a8f2eb3009c504525a. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/DEQX42500002.
Klassenfahrt - Live auf dem Deichbrand 2023
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc112775283bdd405a3ec82c15b765922676c1ec946519a47553401dafd9b8683. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/DEQX42500003.
Hand In Hand - Live auf dem Deichbrand 2022
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7048a37e8426899021855dad9894e435a92c746f32410fb2a8f15cde412bf800. 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/DEQX42500004.
Gepäckträger - Live auf dem Deichbrand 2023
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72192e6fe680b72d94ebf473b88f1959cf32593828b143244ff1b49ac08eb535. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/DEQX42500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63287744b2fb6868dfbc945dd152cf80a6a85014f64125521ab81c62076d6111. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/DEQX42500006.
Mutter Natur - Live auf dem Deichbrand 2022
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909cf6091297bd4c4ba41cac571d49567daa58a26d2707e978bc157e82eb316e. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/DEQX42500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f4fe9eed1d3c8d8d90ee3fc70e5fac13a9496493b5e990de99f972b8d12631. 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/DEQX42500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95713a4e9f2306b935d2946c3402fc6dfa7f2fc3e572b7f8193089d7ab3512e2. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T12:45:27Z), 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/DEQX42500009.
St. Pauli Tanzmusik - Live aus der Hamburger Markthalle 2023
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf5b5628c43b56a0b1bab33405b4bf16e067aa5197e5955af0b25a6b6af1043. 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/DEQX42500011.
Fliegen - Live aus der Hamburger Markthalle 2023
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccacdf4a8cb8def1951ca9675c6636f6ebb910ad6ebec1a1fefbe09d818ab246. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DEQX42500012.