Anders Koppel (born 17 July 1947) is a Danish musician and was co-founder in 1967 of the rock group Savage Rose. Koppel was born in Copenhagen. From 1976 to 2012 he was a member of the trio Bazaar.
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 0x12ab080e7dfd5fc2a3bfb608d863492b93cad30d00feddef9ce0948db7a11a37. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5971623-3628-41ae-9011-f65ae78cb38e.json and https://artists.proofprofile.net/proofs/artist/a5971623-3628-41ae-9011-f65ae78cb38e.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 0x1bf7c44454ff39821930203ce371ed470c1f8b0a8d25d04d7182e64c45fbbf3a. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QMDA72131784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dabfe899ff7d40722c85d396f728569534eee822d975f5591c14c6f1fcfe307. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QMDA72131788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dabfe899ff7d40722c85d396f728569534eee822d975f5591c14c6f1fcfe307. 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/QMDA72131788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003860768e49f1aa6fb14cf60770c3260bd284bd099f9d92322a158302c619a2. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DKES20800103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9b8fed04aea6892fc62f9faafd2bcb121d1c82ec38e167f50fbc7607794456. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/DKES20800104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92edce4adc740b25fae0444c622fa0a8e84df386ab30ac285e58daef9adaa06. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DKES20800105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7684f21260b93ac4a61687aeaa8afa585cc812b16b66c25c179623ac3fb608d4. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DKES20800106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944309b6917d3a7da06257b49c688f95ce493c7180723cffd5316960d41bfbcc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DKES20800107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e19d111e7c7057e9a729c9da28fce0fd194a58f0ecbc816792eab342d9c859. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DKES20800112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35472e0e00595df0c142a8d103a62fef227a66bc832ae070c4ad15fb782dcdc2. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DKES20800109.