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 0xe16982529bfcab6169f291280037e1ada5426dcc9aec1f1ed72e2467c166bfb8. 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/d7868a8f-2c04-44b4-94ea-55344df5d2fc.json and https://artists.proofprofile.net/proofs/artist/d7868a8f-2c04-44b4-94ea-55344df5d2fc.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 0x2107a1e743d86507dd2fef7af870a7e9a0b1f65b035b5b06bfe719068dfc8350. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QMBZ92256598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e2a307b708a36f9655efcfdf56882fdcbc740c666d90fc822e877ab29bc64d. 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/QM6MZ2097957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92de80c61092ee6b0f6eaa09d6325e80eb2251664f2a5c99149cb6dc19d907e2. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QM6MZ2097951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787c76cdb07b0df2d9265f722cd93d6f9eb2300c5fc9008f25c0c8046d7e2706. 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/USV351350855.
En hel flaske rom (Søndag formiddag i Fåborg)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fe6909c20458a61eae1f77921a5a282490f864e669fe1f41f0d9b2f9966c5b. 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/GBLPF0100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8486e28998f96c80a3a162a1299426c449bf4583f7b7610cb28efeab128fc471. 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/GBLPF0500095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a79bc9d2ec84a4b99096c44daf2fecb5c8c8367a704750434f5a1c7bd62b3e9. 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/GBLPF0500098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2dc4f376038bede6004854fb888813303ee12cde0988115959d4420147b048. 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/GBLPF0500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f8769da3b7ac8fa6d52b554e1bac213ef4faa4e77589d8625855f93d3944ca. 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/GBLPF0000064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7ce749f8f5e7044e11a20fc202fb4a26338629261246fa646c9c3f3c1a673a. 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/GBLPF0000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1789179d17c20867e403d1d397beab8ad81d16fdc34ae010712632c941700495. 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/GBLPF0000066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d01d3ca4779c8c6997f54f0ff2303c3d728905eb5f3954742ea0a71c0671790. 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/GBLPF0000070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78964c09779471cdd498ab7de53cf344e999cfa4313501cd68341c8facbf728. 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/GBLPF0000071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84109de6f9f59669451beab4eac23aad50ccda80793959d35efd5ee4a00dfbaa. 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/GBLPF0000078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56262be185585484c1cfd2619b18ff891b8a447e00c9f984df9bc9b38b64a1b. 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/GBLPF9800064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae4f2cb51d529a1ceb3f189de196a6796b7c7831d209e1a18e21a26924240af. 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/GBLPF9800069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560ede8745a38550e3ee8384a9b6c02a1efbea2720504970a63022a1b506da7f. 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/GBLPF9500075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56fbfd8885ab65635f4f5df48eeb46bfa401de607f6be2bf273e75ff3e27bca3. 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/GBLPF9500082.
Christmas with Peter Vesth & Julie Burton