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 0xbf1df40ad48188ff2c4603cf7a9ad17c29f5e492d1b31b9113ceb5ea1f65aec3. 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/17ff78f9-c6ef-44d7-9025-0dea40808e9a.json and https://artists.proofprofile.net/proofs/artist/17ff78f9-c6ef-44d7-9025-0dea40808e9a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
U See Me - Sascha Cawa & Sascha Braemer Remix
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 0xbf9c2bd4630d545a2cb2741102bece51fb684eda910ca8891d099375a50a3a55. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/DEQF61200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b14c5e6d113d6b1b274c87d6a31088fb1eea46783569cfe9ec50b3ad07a2fc5. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/DESH41500189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e02ff27a6dba2410dce1d6352cb867b401a5f047d0d7b0640c784106be1df3. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/DEY471880503.
We Are Katermukke: Britta Arnold (DJ Mix)
WE ARE KATERMUKKE: Britta Arnold (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9315f206e25e32f0aba7a0a08ac8b06d0d4aaa872e1b6056cc6e914808f018. 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/US83Z2108299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee4f88f3267d07bbcbc3a79885c09e8f7d79f98e8171886ea95266f69686607. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/US83Z2108296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609b2bdb7ff7ddfb4ccb6dda2abf59df40236c522ffd6ee251fac500d22df160. 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/DEKB72060337.
Kaktus Rodeo (Britta Arnold & Justin Marchacos Remix)
Kaktus Rodeo - Britta Arnold & Justin Marchacos Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccdf8c914d5613459515ecdfa2b1ce93228bcc709e4cf10d38e44f5a0aefe7d8. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DETB32401314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356240f7d6eb453a4b8924d3a906a66a75eabebfd0e85a5b82756fc1ccce862b. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/DETB32401371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd634852023913702a6c65ee42bb7d81e2358ff4cb6b8d0ea40c48f0c377a5b46. 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/DETB32401372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb537d0e1d2fde2c149dacbdddff61a5d7254e6e89b64a5a23af9a701a3442e79. 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/DETB32401373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360dbb679549291bec5ad527172579cf2b15292bb3f42c226bb453fd2e9d5bce. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/DETB32401374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06727f4ebcf6cc0989412144d2b7e41202c88b64772dd6b9c43eaf7c33e771ba. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DETB32401375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c74b314e0c4b0dfaea0b742352cd5861c61b6157589ab8fdf3b1b9f3a03e030. 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/DETB32401376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35d3a18fa4b364703f2ca397dd6a80e51d180b2ee3265b2fd8ed178adfe9dda. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/US83Z2531248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee36849e9310c5a52ad4c68b19d237ed395cc2050de290e418905d905d276595. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/US83Z2531249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dc5458fb68e1152091a871c556bca22227b1442f94275ce60f4958a961d3d3. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/US83Z2531250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d069002f230edbc6f4440c8edebf064b87ac1d6f90cab515ddb17010ba6ad3. 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/DEY472088408.
We Are Katermukke: Marcus Meinhardt (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8344bcf8a5874878aa9e14ba8ce91b421f0e53ee7785d5aedcc1abd1ff4bd22c. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DESH41900564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6c31643cf701b641906f1ffe27c38fa0a4ae35c81c4d00f345b8477e273f6d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DESH42000105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08622a89801ca26991adcece0f2e4ec9f494098970df7839c3119aeca948c7b. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/DEPI81905413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881cb05ed0544c990fb820039c762b7e5b7328f7ba94cecb91c2e2b258311814. 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/DEPL91215010.