Jumper or Jumpers may refer to: Clothing Sweater, a long-sleeve article of clothing; also called a top, pullover, or jumper in British. A waist-length top garment of dense wool, part of the Royal Nav
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 0x3af94ce4f3d6d164260cbbffa1d69432b85328082e370865048191a9aea865bc. 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/477f2733-25a8-4bb5-8088-545fc5c50d0d.json and https://artists.proofprofile.net/proofs/artist/477f2733-25a8-4bb5-8088-545fc5c50d0d.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 0x21877f9dfaa846304aaf2f314789fe9fb6481e8092781ed20ddeb9d5b2502ee2. 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/SEPQA9625030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270add716c146807f8cefc2aad18070310780180753b8473c2fcd4c118c7b475. 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/SEPQA9625040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd046b738712c76328b86765b677a1804853008ed75909dbb3bb7630f3aca816. 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/SEPQA9625010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcffe95c1aff570c5af020440bbb8eb7e5f8c1b2834a341843de47e100e4220f. 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/SEPQA9625050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5293ef6c4c5c1bdb523c2ad99ecf6da9a09cf49576de776d926f46cbe4bda5. 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/SEPQA9625060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b41dfbec384d0c95c668c2a34c683974733cacbd93272854b63cd5fa4e1129. 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/SEPQA9625020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe732298135379ea17d25d086973cfd58e39d9c02f6870ae53079b889031f2b04. 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/SEPQA9625070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a348dec0754e8bc2e37b04f41bfa8943fcd41457e3f491646a27829fdf35cd. 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/SEPQA9625090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee0703ae4115c38cd2841fab9310b964a3483b374592ad0a43c4d594ecfad03. 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/SEPQA9716010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56eda417e1faf00d20ec69225f93bd24dc4262450676d9b9057a9e86554455e0. 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/SEPQA9802060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15650e18d221d16c9a2767aa51f3cf38d753be92384e5b5df1c5d8cc510404b. 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/SEPQA9802120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2fa0f270cf8492d4a03fe8e47614adcdde020b8df1a07daf0b76de35b396bf. 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/SEPQA9802040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c04057504f92e6b84e1bb596eb2d1078183d328ea5abb1fedc8394342a6439. 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/SEPQA9802051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d12b8b48277bddc09aca35bd22b7212c4bdced554e06ac35add2fa4709c41f. 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/SEPQA9802010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa0bdd0a4d12a3005da552b261736763ea921355f04976dfa44b6e472581087. 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/SEPQA0011010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ac4b706882d5e8ec62eec55d0c60a38f7a315e7beb026ad76e6164e678f9ba. 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/SEPQA0011030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f1b503dabd2a5e1cfe0baec05153b7550551c7a81aca71f689343aec0490fc. 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/SEPQA0011060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49eb5b9df06867c7feea57afdc40b3996a5e38c6d540ed0e3fda0560adcb494. 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/SEPQA0011110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5be9d55706a5aee8753eb07608317e64ae95fcc418fc82550470f5ef53246ea. 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/SEPQA9802070.