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 0x5177f5715553f1b84f068c29badde01aea001977610fd65e2533ecc466048294. 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/467e4686-e403-4c92-81c3-57adbce56e4c.json and https://artists.proofprofile.net/proofs/artist/467e4686-e403-4c92-81c3-57adbce56e4c.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 0x7fc2fbbdb25660989ad0fca3a4e087555c30a8e33ada26141dcf13d19fc78ded. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DEHP51000066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf93774dc7d471e55b0bd7034229fe56d1854375a9d12cc9d2f6f458ca0a4ede. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEHP51000074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea6bd1b9daa96b29d03e12ab6e60495464b4046bbbcdc76daa4c671ee65cae0. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/DEHP50800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709da0e6749fad490ff7151ae204b858a4417df2783e7e636d8534654284198b. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/DEHP50700010.
Weißt du warum ich bei dir bleibe? (Ingwerreibe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956e95ad5ea81837728c15e43e4378c1d64b7ec1dea582bf7624c6e8491e86c7. 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/DEHP51400194.
Das macht er nicht aus Liebe zu dir (Felix Schulz-Remix)
Socca Samba (Lebe Deine Leidenschaft-Version 2016)
Fleischereifachverkäuferin (Neue Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032b758b499e1f9a561e6826aafee687aa7a584adeacfa0ebb71786092392eca. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/DEHP51800282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7500b1332385d2601963a31ea70383966a019fdab2fd06caba19b88fe14fb40c. 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/DEHP51900297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559bd74b28b84870977067a09722975782262f7198e28da5be8b82db13c0fe12. 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/DEHP52000303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080e39db81563ae498c9cb7ed319a4d13bf0a1a8f17270c03fa36f6579a23ae6. 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/DEHP52100317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75839dfcf101b9ffc4490f0867c1736ee761d654ffc9a1fbf3b16bded4104ac. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/DEHP52100331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75839dfcf101b9ffc4490f0867c1736ee761d654ffc9a1fbf3b16bded4104ac. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/DEHP52100331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505f30d5aa69af4b92c14ae2d5aea1e35e00c147d39eccbe3508897429ab7fef. 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/DEHP52100333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080e39db81563ae498c9cb7ed319a4d13bf0a1a8f17270c03fa36f6579a23ae6. 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/DEHP52100317.
Cowboys träumen heimlich von Weihnachten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca3a28d747bf321992cf2696c57a72e4af9adf316312ea5c880795dced045f3. 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/DEXH42200010.