Bertram Bangsted Kvist (born 19 March 2005) is a Danish professional footballer who plays for Danish 2nd Division side Næstved. He has represented Denmark at youth levels. Career Brøndby Kvist is kno
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 0xddb8995ee181c63e206f07ec3cacc978411027a433497116450e3c374af9b720. 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/cff1de8e-3231-4aa3-be51-b0a0cbd8f6f1.json and https://artists.proofprofile.net/proofs/artist/cff1de8e-3231-4aa3-be51-b0a0cbd8f6f1.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 0x3629dffc61ce9f14556316d3fe0dd77e6c9aa0100a5fdfbccbb8088310059f99. 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/US3DF2467098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5030520dfb1374b8edcbe043049a0801e3d2f9a7f6b79bf3eb5fdb8b6ce0d6. 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/QMANG2250970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31259762370a5f4671fe78911dc0a527ca05bb468b3f812a38954f7f575de2fe. 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/QMANG2216666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ea0771a799f51d6603ae6f1ea9028e552e1cf10fe4d58ef0f31cd0ec9b4ab5. 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/US3DF2148868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74d4a3a2fd11a10870d428f8566d4700fc4ae4f8799a4d2a84a08365718da55. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USANG2451082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087984d686c3f5fe0c749e271da974fd274d4e63491ee47ba321e364d5643336. 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/USANG2441452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468de30374f16d7a3cba3e24c54d8fa9581262987f81a31d9e5db00b485ce9be. 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/FRX762489608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd86a4e513260d88eec97725a7d314cac54645f66615839665ebdd2854e9c24. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US3DF2465318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d3c6c9187c504044f2650859411fe27ba13badb9cb921f821605664d2a79f9. 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/US3DF2422403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fde129dcb056b42a793c0368bcf4285ec787d8227ff737349a04ca26c69a42a. 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/QM3DF2291631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120507dc8c56ac665078f8700a76cd121fb1556012c4ef5f7d2e1b8176db3dbe. 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/US3DF2454769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2520dc2ac25bbd8254590823b68403ebe87a29f3381206812374bd1aa5d876. 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/UKZGC2500037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c484d7b5b6e6cdc1c171e2e233295a2ea7c07802dc7a923327816b0107cd803. 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/UKZGC2500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c0f139b84ad6805eff85594e8e161cb127a3a7c1d83d5a7ca3ae722e06237c. 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/UKZGC2500042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b078531d128bbaf2a12448e08cfdad54fcaf9757de8959a50421e13e0a3f0c8. 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/UKZGC2500044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093c9ffe9bd8f07b91a98eee0e45259860eecf20fd973bdc25b28902c312792b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM3DF2177813.