Esben and the Witch (Danish language: Esben og Troldheksen) is a Danish fairy tale first collected by Jens Kamp.Kamp, Jens. Danske Folkeminder, æventyr, Folkesagn, Gaader, Rim Og Folketro. Odense: R.
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 0x15cded67df3b9d7e49f86e1cc03c01470ca125fd378d760fc46a896ba18f6d89. 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/30075968-8a54-4540-a461-f0d49a759267.json and https://artists.proofprofile.net/proofs/artist/30075968-8a54-4540-a461-f0d49a759267.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 0x6526ce90427f3abaad02032e2d512b389a91b43312ea59f1542f81b0b1e69a8c. 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/USMTD1000486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f54883ae642a58c1bd29a05e895f7056cdaa6fcca4a8865ad0585cc8185e0f0. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/USMTD1100924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad344ec8a7f5454f05c25f059983506e7fedee80ef29a0496958eaee682bc540. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USMTD1202589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9650fcf749684cbac36e7870c0134817a96e588b66e3e2e18f303d1caa43ddfb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USMTD1202590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d25d611715263364c622db8c42438ae3dafe0f0fd1b8c863ca58a125ef19a90. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:04:06Z), 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/USMTD1202591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c877d45bf195c21f1c867ed585aa32c7342966e2e74d259a7345199862fffbd. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/USMTD1202595.
Wash the Sins Not Only the Face (Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1e97b0d1ec9330dc12b3288ad20641633431b34178ead2540f98e5f841c4a2. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/UK4MC1405074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135ea4a2169467256a52803a36206eb64c6962cfedba9fad11487ca5b7f73278. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UK4MC1405076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763faa8aac2a5808ccc50bfa3340546e889357cadbfe80b21bf337f599d64eb6. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:35:54Z), 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/UK4MC1405077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea38b910c25420d60c03a1a618443da24a0b67dee3016e80f47ceebadc5a73ba. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/UK4MC1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d41c36e3f1c86fb09175f9193e741d8e6a6386a9883850ed8bed9ff96987ae9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR33T1850101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119597d746f417945362afa820a9952f42b0e83c01e6da70027fda6f46c684ca. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/FR33T1850103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97783fac47069b4d6ebcadf4090d5a58d282e1fc95fd11d922c836f0cc38f5a. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/UK9AV2202234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bf04bfbaa0ef757044225acd73591eab1c5f28cbb44ad50ece7ca406c3b11f. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/UK9AV2202235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21273fff35e457f202c90bb9137430364cc8dc6f59c3450d342b231ae2c9bb3. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/UK9AV2202237.