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 0xd4091f79352f28f69970481950e3e3c8e34035f102ab702925d052deaff845b7. 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/cf4324fc-47ed-4bd1-abfd-b84d6ce55afa.json and https://artists.proofprofile.net/proofs/artist/cf4324fc-47ed-4bd1-abfd-b84d6ce55afa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
BONA (feat. ilo 7araga, JUU, Avie, Moel030 & Amo)
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 0x4f32d9b6ebce4b7745a3a9580ceda1d0c86b12bf06d77d0571accec251396567. 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/DEKF22301043.
Von der Straße (feat. Suad.077, Jiyo & Nuhat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab91b6f414fa237e446bdd6347a0422c5e3660ed2d16d9ff442248d31f1a24c. 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/DEKF22301084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f32d9b6ebce4b7745a3a9580ceda1d0c86b12bf06d77d0571accec251396567. 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/DEKF22301043.
RLR FREESTYLE (feat. JUU, diyarue, serko, LeoLaBandit, Benoua & Adem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2af9f48f86cb1cd9c9fade456d75b9b5d6d6a1fc25d507489dd20dfc3da0e54. 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/DEKF22401530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1f27bd0b5ab3f1e08021b7e5da6f3c61c6f2f01f72dea9feae3c9cd0c9869a. 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/DEKF22401133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64e91c1825a8ff32384ac627af7d09bad7d4052f498a02f78dd52a9b65874b8. 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/DEKF22400318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a78d4ba44799858c23029b24a40a92050ccaeecbbb38a09851021e40eb60ebe. 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/DEKF22400317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd678987b54ce6d06539fa470a755cb801e933c9e8e8479505260ae3303bde210. 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/DEKF22400278.
Nein Mann (feat. Hamdi52, JUU & Suad.077)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51253ca5fe502069a816fd87d99a248bea551fc5c6408dd4b780190e08ec1b0d. 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/DEKF22400053.
Jump Jump (feat. JUU, Ouzzi & LeoLaBandit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde21940b3a7a04fa5e1d1439a0cc223fc825721b705490941d64b9eec4088a62. 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/DEKF22400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44de57c5d7e74cd3c34604a28062d5c576d0b3fa96ada8d86a049da1d7f45a8. 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/DEZC62387289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b3739a1d4ccef1a2678ac52ba3be0a3298446f6b4380b3ad1aaa8f794dbb29. 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/DEKF22301443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21734f436a4bb1828d360d6ec4e3cb65338348dbe78797e6c84eeb13017bf3a. 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/DEKF22301169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e9b9df18bb970b25c4e712f9ed1cbb9be9f1c668b8b85e430fd0a0ec576fff. 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/DEKF22300753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdae2c66bf50c1b9cbcf9998a66da8e885c1af04ca17ef8fe3828bb1234f408. 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/DEKF22401120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a0fa7ccc0e5e86d4987af346972407ad20178f94b88da7078eb7486f495958. 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/DEKF22401122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c47d33443f53c3b43c193a1fdec6088270183b57a8cb730869dfc382d876cd. 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/DEKF22401124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89794c17b3e4e4da22edb840f74c418e3ef3fcc00e9ba946a02c871c649407ef. 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/DEKF22401125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b298f28bb4f60a2bde769bb0ffb4121a0a5c02487b26951ee11833ab9cd5c57. 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/DEKF22401130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099af22ed1fcfdc2fd66366aed8d652f9ec9852e4f691483e0892b340090779e. 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/DEKF22401132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1f27bd0b5ab3f1e08021b7e5da6f3c61c6f2f01f72dea9feae3c9cd0c9869a. 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/DEKF22401133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66ae2df853c3f009ad0907e3831bfbd36c5892341bad4235eae8a7cc959104d. 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/DEKF22401134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4406660eff06a213d43a72469929280dc59c14793a82568dd972311a2c083102. 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/DEKF22401136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a4d4aaac3f3dc6276de7305b7eb615b36024f4d7455b29b92f0d61947f2fb7. 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/DEKF22401139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b9f02389249432dbff63bc3c014e446935009556e83898a579ae2cba2a800b. 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/DEKF22401144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1966eee73b087de3c6feac0074da7804f906a253202a1b9795a3ddf98d28ff4f. 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/CH7812225060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ace453c6d0284ec1bcb5bf3043f0be110853f97b25fe62ceabcc64f2b1691f. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/CH7812225062.
Macarena (feat. JUU, Cave 110 & LeoLaBandit)
RLR2 - Runde 3 - Tag 5: Wenn Welten kollidieren
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56bee8b5fb78160ae047f4bee55aa370596865503f09198dbb140481bcce7bbd. 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/DEKF22401936.
Tutto Ok (feat. JUU, Ouzzi, Finessim & Chanelle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44961b1c117baefc16662d583603028e65680053078d75e33f67d5f610c6b3eb. 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/DEKF22401789.
Block zum Block (feat. JUU, LeoLaBandit & Benoua)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe249b3b9aa2410f5bacbebab386d63aafc03b750ea814f78f6942d9b8d45b95a. 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/DEKF22401617.
RLR2 - Runde 3 - Tag 7: Jenseits aller Grenzen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffb201ff790a3c4244b7b4e9403db75ac9e78ed0506616ad41e54937a747e61. 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/DEKF22500136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6847413d5abbcc2211386f4ecdc8949fdeafd3f365bb5de2618a9ad032c84944. 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/DEKF22500139.