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 0xa50bee3a5103e6b2628d73d9a680cfd3ba249dbd330018d872013d9c9e76cfa2. 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/2ad9d1b8-9d32-4938-a94e-ae259e6b07b7.json and https://artists.proofprofile.net/proofs/artist/2ad9d1b8-9d32-4938-a94e-ae259e6b07b7.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 0x35b249be98ee6eb35aaa8a0d6044c7eb8e2986b2f53c22b616d504194a22734e. 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/QZHN82361432.
Nüsse essen mit Jonas & Joshi (20Tsd. Follower Special)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0369e6a1d50b8204fe7058bc33fb16bae0fc3d7f1224244e596fd8b0c0d25e. 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/QZNWQ2379643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ef151b5872cc433c9495e95d61623979e3218bc7d283adb7564987cda726d0. 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/QZTAW2374137.
25K Follower Special Terrorpex Livesession
Die Eltern - Lehrer - Schülerschranzferenz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb6886fe0a111149d3fcdb50a4ce35a72b292f5f545301cbb54fb84a91f4fc7. 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/QZWFE2343259.
Wer von uns hat hier Aggressionsprobleme?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a585969bcd8780a14071de7b122eb24882ffd128a9d19ed19bb627a76ffd6c. 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/QZWFK2344801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbd7f8cb1f471f310156415d5f3464cb9e9ee593161d89dd91e05e092441b9d. 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/QZDA62403620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdcac0d338285abaa4d4861430c7e785dc80d519244c7d86f40b81964c352c3. 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/QZFYZ2422379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357af9ac8938b4b85774aef77d9673ae2204abd5e877b54a9826f27b53aabfda. 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/QZDA62467696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c80bed0634bbeac8aedada21373522a706efca125c5f99219ced72c503f0cad. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZES92485780.
Ich zeig euch was die Bösen wirklich machen!
Live @ Need 4 Beat - Best Part + Sped Up
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e125f76b55acd6b6ea6b23b7adc2483c9ccf23189c79957ec3b665428373f7. 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/US3DF2427261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862e6d3590f0097ffc1a53b146e090f4cc743818f50dd08c3ba8395aaf496f47. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/QZDA62470083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667b05a402792993cebcad36286345ccf06d57dde14cc6283001956379ae1ac3. 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/QZDA62470177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c0b5bb4ae0ac1c9cc4c5002de7308816863248be4dd3a4080ead27e57fa4b0. 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/QZDA62470183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4353aa17cf7bca5a5a7519804d58a2274ccd9a4653cd3669d378e46befefbf. 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/SE6I32436456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb5baa14e6f734de7b3d45324b51cac498c20b2655b8691da625fd618e94203. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/SE6I32436457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2059574a709e6979559699ed565cf4eff90905c6f011fdea00de98e9b58f4243. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZZ7P2491455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171e0772b6c003503652f1dadac9f5c7d8c6d06eb98daa0cfb81d761318041ce. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/SE6QE2485636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e228c3032b35de4dc2e2852f034ec2e532e44d1da7e6be11daa7b7011ab03eb. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/QZZ7P2489478.