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 0x3c067c03b0070b5cff0d251ba9dcda86eff6d8a09033e5356d2ace23b5db7498. 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/92a1d2aa-ed82-4120-8ccf-ecd2150e1cb3.json and https://artists.proofprofile.net/proofs/artist/92a1d2aa-ed82-4120-8ccf-ecd2150e1cb3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Steuerfreimoney Anthem Vol. 1 (Single Version) (feat. AchtVier, TaiMO, Stanley)
Oskar Lafontaine (feat. AchtVier, TaiMO, Stanley)
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 0x43dc1dead8404d19a8809cbd0933725c1ea2c6681b57e61c20d768c95f2e5ad1. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/DEY641800003.
3 Schlampen (feat. AchtVier, TaiMO, Stanley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590d09b8ee185a76d94f8bfc3bdba9bfc72ed8ec0b44d29f90f52ded29762eda. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/DEY641800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aec14c20c86fe2f00c36fe33def93fab82eba5b00d58f2a484339bdc1213c20. 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/DEY641800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a9f8f1ce5c7ec0b9b339544c06de73766731ec8ded3b4223fd46842052c809. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/DEY641800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd763c7d79aadc282ef30e7018f663331e4b6111c227a4166c3928c9d71230ac0. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/DEY641800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd62f410559248d2f8488475ff5d703fd290d69c66e5149826dcf1e14ea2ecb. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/DEY641800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39444306bfba9af0e7bdfab2b707823731f8ab5ac49657ca91baacfbb95a6d4. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEY641800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787fa96aa3e88e6dc38df231ad071fe9633f3fb618b95923e1508ea0f56d60d8. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/DEY641800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d6f9b085ea121a995e3957cf6211f09786c147a0cda39338870a8c7c8db1a3. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DEY641800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532c9b32f9d2b2b025a484cecdc559f79f6f3937f0adbcabb450cc6738f7e239. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/DEY641800014.
Steuerfreimoney Anthem Vol. 2 (feat. AchtVier, TaiMO, Stanley, Danny 111)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940b84c8b3dcd7767746e8902b2628c4d0bfcf912026d58df515c1b59c0f0d38. 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/DEA621901332.