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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf195c6e38e3f36d49824dac551dbd036fd8b6c3e4de8268d5f59c28969164f9d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7cb549dc-0a23-4a3b-bc16-dfd9678d8b6d.json and https://artists.proofprofile.net/proofs/artist/7cb549dc-0a23-4a3b-bc16-dfd9678d8b6d.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55e80f661eee5ae04ea275a2385779c378a7da1d089b7fc3c61d2f575e739fd. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEA621900419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0c30e5c74d48e1a1719bfb5431d899b00dafd8c85acf651cd06d5930d374bd. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/DEA621900899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4ba93f9aa9f380901f240239b85b197c5dc57eec77e3c845d092ede7ce7a3c. 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/DETV91501555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc18b1ca822654a7f30df21f979962a9cf68fa777729c69f713e78534998cc0c. 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/DETV91501561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c990849d27c61cf832f4dec2aa8744562ccac5d0b86d632c6569b66584e45f. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/DETV91501621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b212bc16f03b5b9eb93f283c3b9f08fe569848e26b43a8e3c9a73183b8d479. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:33:23Z), 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/DETV91501631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87420c2e974ac3b60467cc0af9dc430262d03acd103d608db7f0d1d6515ae350. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DETV91501636.
WIR SIND ECHT (feat. Hamada, Hemso & Brecho)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2e2c2ff9cdc72202424997147a2f872656bfa6557a590f33ce2bc749c43d49. 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/DEA622101093.
3NG (feat. Hemso, Play69, Hamada & Brecho)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd181e5f3fdd543c88565d5a68382f09e74898a49f85f195f40c4438f6e1e353c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEA621900838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd483cf01a838ff33b5956f82105629d03b1613a6bcb3e1a883869979e074cbf1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEA622000572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd483cf01a838ff33b5956f82105629d03b1613a6bcb3e1a883869979e074cbf1. 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/DEA622000572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a085a99f902b175602962b4eeb9003c0eb2162491abef862795abe98144e32. 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/DEA622000160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a7431e0c6c7a0732943800a2fc36ef334439f8a477796172d8e534c0488fd2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEA621901293.