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 0xe18c19cc8655364c919ef913a73b5ce8bc7566629ae2c6099e057d4f2bfd97a1. 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/3e77c584-2bd4-4124-8102-1e4f4ff5129a.json and https://artists.proofprofile.net/proofs/artist/3e77c584-2bd4-4124-8102-1e4f4ff5129a.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 0xfcde64ef7969234b5b6ea829230fdf9b4fc1b9539bf98d1706b096b4666276eb. 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/DEN060200508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cf5cbb5888b8978d25824bfdf7e62946eed013c3f333e398de62355e47c1cb. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/DEN060200527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052236ee13572811f9946a2bb31cd0b7ec8eafc3252bb936162038fb58ca20be. 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/DEN060200531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7d909c74f286a06ae34e45c96b50266f3d6f4dc2385041e62aa3f586894cc9. 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/DEN060200532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc4648a9ab488686ed1dde351e694d92df974e934e2890a50d61d5c8f62391c. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/DEN060200733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32d3e3bdb296aab9fd0f46f13ca5a58ad97fcb85b3bf42947dc98f981dad40b. 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/DEN060300798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6fe2058ddf2242faece70bd1fed803090a4ef3948115284fe82a338de8c36bd. 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/DEN060300824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9c67cf8542599e20e96290a64d878c0e929a12b4d46d85500401a1ebc854c8. 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/DEN060401894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694e1d3032d9dcc4d9814a3ec493c6f63416406e3e3e1702e137ca8d0fd7437c. 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/DEN060401685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89c8be4733d14210a6d0a26bb47bb24c9f3e3977c6c9a5ffd9bf64eb9a2505a. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEN060401597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39bb56ac9a8790b07307066958ea005dca910ff2426a11d3d671cfab19f9b48. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:26:18Z), 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/DEN060401669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd0de699b10e116fadf5d13d725678bdeb2547ceefd20091e05f31312a959b6. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DEN060401678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab81b5bf3df9d765265a2aa74936e7a492cf2920281174550b919a1bcb885a4f. 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/DEN060401680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80991756779b0e3797b5f576e1c1aa2bc9a45aa7bf73b4c69f21bdf5a2db99d. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:54:57Z), 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/DEN060401686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563c77ee9441d9eba7beb93f556d02a1c22c4992709551b385aac84569887f9d. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:27:10Z), 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/DEN060401687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3e02d6ba9a494bec3f4baad4dfddf3565a49045c2597199972ae3c26165e53. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/DEN060700570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff3fa0fc1d96b1fab07516f783058c69445d504f7da8ff8461acebecb477439. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DEN060700608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43cc088cef8d72a5c6491460ece23de7b819b9e86697cc8a23cf6ec2b43e8331. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/DEA811100492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7bce698f063d878f0d171065d65c6bfc0ce0893bc40825123906da359a0d19. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:05:25Z), 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/DEE860200629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8fe1150a080635c02502362f1685fbbecc8f0b123526d2b60a14556feb87e9. 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/NLH2L2400220.
Running Beats 15 - Musik Zum Laufen (Hands up Edition V) [Inkl. 5 KM & 10 KM Mix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9c67cf8542599e20e96290a64d878c0e929a12b4d46d85500401a1ebc854c8. 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/DEN060401894.