Gunhild Carling (born 7 May 1975) is a Swedish jazz musician and multi-instrumentalist. She plays the trombone, trumpet and many other instruments.Gunhild: "För mig har det varit superjobbigt" Expres
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 0x54c1825fc34a59eefe18f1a03d461be6e1dedfdf7b57f7bae69a6c23f62e5063. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/46c94ec5-e110-4bf2-a307-924274da6d56.json and https://artists.proofprofile.net/proofs/artist/46c94ec5-e110-4bf2-a307-924274da6d56.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 0x8572bca9c0d0bf5c3dfa44aed0aa18048686d7cf8aa0eb4d267927cc732ffbd3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SEVSG0501612.
Red Hot Jam (feat. Jan Lundgren & Jesper Lundgaard)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a808e45eb6bf695ac7a20c2385e4d62389243ccbffef9d122faa51234bc384. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SEY3A1500301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32cf278cac0f584533b599cfb6c530faa24a25b4512d2acba7ef3dfe502b7d8. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/SEY3A1500318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4ac52f2eb20e1779c5173c13d3a0c0f8b48c93fc899a41228e8a3cbdd2f3a2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE6HN2084937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e5aad077c255549d92abcf118c6d898f5337f75bf065c6175fa57dc33a9a18. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZTBA2472997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08bfe4fd24ded583df853876027fd195a71782b67f87af54828c035304227ca. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:21:37Z), 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/QZTBA2472998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469fe02471c7d1815575322d294868d40a7263171baaadbac88280a1dbfc795c. 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/GBDMT1600222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6ec3db41f3f32f49de8cab68757a9d2e549d180559a3d0732ff14c10fc90f3. 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/GBDMT1800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd1e7757c54648ffe3d9b4f087e511d11b7a1910518aea8e8f310c0a303e69c. 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/GBDMT1800322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f45a2827a5d7cfd977f05bf0a583509f439051b26a3f1681fa6f422205b7504. 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/SE3OW1800051.