The Danish Radio Big Band (aka DR Big Band), often referred to as the Radioens Big Band is a radio ensemble and big band founded in Copenhagen in 1964 at the Danish Broadcasting Corporation (DR). Ba
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 0xb560e3efd1a0204b0149c3f224ea9dc17fbea41c47db9f476fc49f7decb14b24. 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/cf6de32d-fa9f-4d16-9fa8-3b353142fd67.json and https://artists.proofprofile.net/proofs/artist/cf6de32d-fa9f-4d16-9fa8-3b353142fd67.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 0x1538a075d626445c147c80bff150302ee0821fa0fb2dea2c12d6d46526bb174f. 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/QM7282371712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f342ab679a42e56a0c57e305b47e2eec80b916a8f0a988ede3e6d87959d308. 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/QM7282371713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010dafe8b1c26ea9a85f19383edf7079d7427cdd8109fbd4fa2f77ab38f4b1e8. 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/QM7282371714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a5e307749f1bca13f6a7805bbc2b4375aa24bc19e1e73feeb11cb262e30e1c. 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/QM7282371715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3669af2424088203e33504629f661a08582cfb0704561372b1c59ee74a46ee4. 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/QM7282371716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4342619d9bd7f9af60a1bae8adf0c53ac3b07c3547c33ec5ae4817abece27769. 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/QM7282371717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4dc37ba430471280e3d2a0c231ece5fa50f935e55f9b3298510bf5f6416832. 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/QM7282371718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc130c53f08ad09d045f6fc3900d99a1a6a07fc319c551f277b25b2bbf5bf624d. 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/QM7282371721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6900816358ecb1b7a67d576e2955e6bfde8c849737f7ebf341b34495e56abe. 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/QMBZ92183922.
Danse Staffan - Dans Eller Dø (feat. Kristian)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe589fc014c20a17338374373444ace692195f3760fdb365f2368ea3c18904266. 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/QM6N21992706.
Stand on Your Feet and Fight - Voices of the Danish West Indies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601f115ba26c477c18002ef0cb28bda5be33a8edf3c32deadda49b3cea0bb4a2. 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/DK6922400801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2a5daa413fdd038e95cf039d1860155c1fa17a71fc6ed8e9fe1bbedfb42c22. 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/DK6922400802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7c8f2d3621bd172aa8f58d0c77aba1c384a40eac1d6f49e770443a665e94fc. 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/DK6922400804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90c391beed082735b536011524ee24529600a3651d66d9fcbb0e52b10c981aa. 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/DK6922400805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc68838f609447031fe401541a2c8bb3947b9bc40b412c96e7c7e6ebaa094df. 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/DK6922400806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa23d3a8c1c511f4577378110cd47ebe85fdb47212679103ba02861d683eb65. 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/DK6922400701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb448156bcf7ad3cc99adf9e17bd9d21978ea2f2cf260e8fc29636d60c0d737ec. 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/DK6922400810.