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 0xa4125ec310b15da76896a133be55ac806e1c9b8db293875e12093f88773c8a42. 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/3dad4711-c3f7-4157-a34f-fa263284c23b.json and https://artists.proofprofile.net/proofs/artist/3dad4711-c3f7-4157-a34f-fa263284c23b.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 0x56d1975ee0700573f74354c7de040b3a6afb8efa28b2a77349acfe72bb2d7368. 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/GBUR62000757.
Jaana (Carlo Lio Meets Kaiserdisco 2010 Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60af58f850dfee8400b11f1068c1d96dfa80b33251489647f26f2cf21acec83f. 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/GBUR62000380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8f9cf6c5cfb2a2499c16f10028d049090dc51d05b25a1121b1cb4f22c0f27c. 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/DEPU61806603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d4395666fe82b38d91651385c99da30a7d38988f48fd1f50e7d215334fbb8c. 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/DEPU61805803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45efd8918a6376f933e3e8eac354887f3867e97ec87b3c5e5d3bcbe9a7e60eda. 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/DEPU61804405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc787961286330e933ecf1da88d5596b6bcfb0604802429dd8cecf383349c117e. 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/DEPU61803604.
Remixed by Thomas Hoffknecht and Petter B
Banause - Thomas Hoffknecht Remix - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc2d93d4ee0d8fd2884918c51e7deed373a1e8c715593aba6a62a92b9c7757b. 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/DEPU61803903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea62dfef02548b3e8e79de4f71139b215e783c6f41baed861fd419ef468b367. 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/ITBGD1900036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fa54cc044cb51430a83a2b94582c9d845cc05084193d352a30878ea144d6b4. 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/DEPU61803204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a17dab763a1f529f00a783b40afcd07f11e48757c2ee3bb391425664d1fc123. 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/ES84B1900080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675cdcb11602709cf288ac4bcc29a5d90e0ccdd5647112338e036a038be4f2ad. 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/DEPU61802601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6850abf00c34a63d6e3bc2146aec8c2f5a79274fabd0e54ea08f54430c6da1. 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/GBKQU1737836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b5631def5c27e5c538396f89074a76b9418b5b636f97210406f759adceb7bf. 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/GBKQU1737837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ebc97429223fd00a058e8c7cee31a65e5c2197d5fa8f3d0ee1ecdb00bb993b. 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/DEPU61812101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6e49ac19d002c59a53872b9bf433ec909b58414107420d0613e4e3841623e5. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DEPU61812102.