thumb|right|Sign greeting visitors to Nordhastedt, Schleswig-Holstein. Moin, moi or mojn ; is a Low German, Frisian, High German ( or ),Duden: moin [moin], Moin, [Moin] Danish ()Den Danske Ordbog: moj
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 0x91a6737a8dd4b43cde11883e3c529d6b8b2f6569bad8903cb72f12c305d578d6. 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/d312508a-439b-4130-85b9-2c17e0cea333.json and https://artists.proofprofile.net/proofs/artist/d312508a-439b-4130-85b9-2c17e0cea333.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 0x5ae4e4d87f85e2a82ab900b9121a181104a4eaa06ff7f0961730b43936602de0. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/GBG8Q1000029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4dfe9622b917bb0fef62baa2c56f4c74baf9f3f6873dc562060f16da04a157. 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/GBG8Q1300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b656c46cb7d46bc0d2b1cdd93a8f96df2a101a2285a92113c15594dfaf1fe63. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GBG8Q1300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85c52d720578c3545f63f693737b3023a0fe8a72d4191031fa523713f1bd60f. 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/FR96X2142085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba2aee80a4fa8eafd5640cc1e5bdc9782b816aec2831f054a98e880e2b466e4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR96X2142086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353b18723aae9bdaf21eee44ef1d66598554e60e5c36331c70975f38643b0a01. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FR96X2142087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758d0e3e9328b3ce611a48da6029e725d6fe9922108b7b2530e6e9c9f710292e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/FR96X2142089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcaa141b3337ee30afc4bff064c81bbb536c2a9c2f5ac6841f8ff4803fb2ed7. 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/FR96X2142090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80b9cb032b936f0617b85e56811b3f05d1e2d07237bae75cf981e42233b8d0e. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/FR96X2142091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd49015c3c5b2171c372df3d26aed0af23350b872d7444367291e2141cc6220. 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/FR96X2142092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2d15e4f8f32c860911a59ed8a8d75244e2dc2c93783251b742ffd5652533e6. 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/DEG932202820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709f4d93549e0c97b890e7685501fcf1c483661452a0d517ae178ba80629b23c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DEG932202818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3f49d42072598f1dd805b382143aa967918589060681aa699d6f9331ebe7b1. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:21:32Z), 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/DEG932202819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840be78a549adf2155ab5a11a7d11f1b5ff84f8e818abc5b0730f6cb686d94d3. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEG932202816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb097a0413023eb0844a9ab6e9ea4a84953acaa544a6c0271a1f5ca039a3f20e. 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/DEG932202815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03ed957743e99039c2e24a81fdb31bd5c7e15d1a5a3d7f65bf331cf338ea682. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:29:21Z), 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/DEG932301056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c56de5bcac85acc3bd1013a8a67bc1508b722ea95962ca6c79f852ca894807. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEG932301057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37110abd51310469fa35c6b1c523092b00bc4c770847a32b10dc345fd4b6ebfa. 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/DEG932301058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5f70674e0e46a2fa2105325dfbe466ea7d6ab6ed7fb23df853611f1a1a29b3. 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/DEG932403656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4465aced7f8d260251565e793c092f1cd4ec84ce0e41f4c1cd0ab5af85b3f47. 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/DEG932403663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5f70674e0e46a2fa2105325dfbe466ea7d6ab6ed7fb23df853611f1a1a29b3. 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/DEG932403656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28dc336b9928838436b67aa27dbac7d0cce58263805cf563268a22303786f2fa. 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/DEG932403666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a0206322d2e1a13f0215611ef5a8e2f9575bb52b787f8f549b0cf35c6df40c. 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/DEG932403665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fe4de55a526aec4c78b607b0c46082e41c8c23eb67f78c8e655aae157d7d71. 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/DEG932403664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4465aced7f8d260251565e793c092f1cd4ec84ce0e41f4c1cd0ab5af85b3f47. 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/DEG932403663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470ec5a86ea965db43999614ac8e63fbabf2658bb8018d1a16111ec65887d4d3. 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/DEG932403662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d09fceb6d0ef28fbb885288a4d6cca1643ae8bdd9fc7a7e418c499e4c76d24. 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/DEG932403661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931ba03be071da90cfa2f6085fb7b2b90bf1f0f32d206ce3307f3b00be9360f9. 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/DEG932403660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ceb4c568b76e2a0bffd689ceaa8c2017fc66b5c992be390a953a0eddf4c890. 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/DEG932403659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482b27c34b7dae5c3794720fed0add35aa50a7f64e7cfa45a7755ba5f39cd1d8. 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/DEG932403658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe136182ff691adff8e6eaf49d8d2d84ebee0109f29fa9aa801f44cc9d69baa5. 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/DEG932403657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd7601bd67f89494efce08c5565f5dc3d2eb4ff739a4e12cb41cf9b319ef65e. 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/DEG932400621.