thumb|250px|Henrik Iversen at the Nocturnal Culture Night festival 2015. NamNamBulu is a German synthpop/futurepop band, consisting of Henrik Iversen (lyrics and vocals) and Vasi Vallis (songwriting
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 0xbcc19e19dc79560f29f87c8e3290b3bcdd786d0081311f5d53f26382d2c7070c. 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/04ba3632-8e7b-4d13-adea-09b1aaa5d204.json and https://artists.proofprofile.net/proofs/artist/04ba3632-8e7b-4d13-adea-09b1aaa5d204.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 0xe96e45f18c4b09c30491ccaf465e041c0a72e17ab9f2723f0429ea8ba91516b0. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/DEKV21612589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf4da26a52ac51d8b4ed385e951fb8f0b5b0b2ddc80d33c48f6ac2a47866b27. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/DEZ900501362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff9efb0057857adf04740cfb00377cb709a02e355e98a42bef450e5a68ebde0. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/DEZ900500081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75863147356916b016c5491e909f37a2a757992ccb31290253b4833ef7dce12. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/DEZ900500083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa69bf4627a207d11e26ee73d70894c74e0c1a1fbbc562d6dea760545b1167d8. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/DEZ900500085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64fa775c61595cc2890b469d5ad1129950ca34d4c9581df4a57dd87cf05772e. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/DEZ900500087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4894311a24250f3e95401d03d1ccf4a8f99ca9875bcbbb7cdb8d00ab1adb73a9. Chain 2 (Bitcoin): anchored in block 957959 (2026-07-14T05:54:20Z), 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/DEZ900500088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf6f21ca3e305843b4d9ec64abd870d7e5c8e53292422ed006bb8dc6442a527. 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/DEZ900501330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80dac336ac64b09ea292d2115921cba2cc422790928033be68b92ff231ad30d6. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/DEZ900501331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38b81e8bd229e3f7b749d6c9478882a980acc3dfd0b7b0a9e806a82093b3cc9. 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/DEZ900501332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f5c9c4045df5ef175d3c6d8759f6336c0aa0dbc480d81227a29c51bd2c6733. 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/DEZ900501333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313ea2c537104d4eb930f59b7218281b27acb7458430b18e5290793352160612. 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/DEZ900501334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8302e99b01b0531556869dc8ed342ac813bba6df32a3b6aa8e431b83b21f9144. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEZ900501335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff4b8a521b2b69c099021642b5cd2eb897d635efeca0ba420087258772c16e3. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DEZ900501336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51c884d3e81d7c9429dddd405a8b48ba5e2415734b40f1d758b1b46105ba5dc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEZ900501337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b326fa65aa5a59b7e32e628b16b822329e579268bc3c2231101954423c7594. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEZ900501338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e991240bad426019697842fd371eb5aa67ad9e24cb8c9309a27d564c9af1555. 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/DEZ900501339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5078d559eb18547bab2fb21ebb6aac453aedcc7690cb7408b1b97a7661e5db7. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DEZ900501340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f653a994539cb1df3731a5a64f2dbd4cdbd572e9e1db0fe9a37ea87bf7b8c1. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/DEKV20500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084f32ac60cd5f17bcdfc8ac12840ca82b62001cf49587436250b0cfac9e0e19. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEZ650712691.
Breathing In Fumes (An Infactious Tribute to Depeche Mode)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e8001ad9fe90429cec8694e4224b97f6146aeb5351ecc7dc7febe15a97c81a. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEKV21801414.