Winterbach may refer to: Places Winterbach, Baden-Württemberg, Germany Winterbach, Bavaria, Germany Winterbach, Bad Kreuznach, Rhineland-Palatinate, Germany Winterbach, Südwestpfalz, Rhineland-P
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 0x02b4ec51ae9f9f443a69466d30550ce4670200a34eddd2d9b75e1a93748d6de9. 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/bdf3a9ab-634b-4efd-b5ad-a4781b03b883.json and https://artists.proofprofile.net/proofs/artist/bdf3a9ab-634b-4efd-b5ad-a4781b03b883.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 0x9e242f98a943c28ec1281aa33da7edda5ae38f59a4f0f8797b7c1e6d31bc2287. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/NL4WT2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279423a88a35bbbc62f57e0f95ee325370839c89445728839578711799ec3ddf. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/NL4WT2300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecf27eaea30fd54ec163df3433cc056b695d602d6a5f61ef80590b7537ba1cd. 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/NL4WT2300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d20f357623b44a1ef20d5712c098820bdd9d5e4641ae236a1a272a05848f7e5. 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/NL4WT2300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3c9d4329eb0186d920ec9472ac113b0763434d686fca84256c50f450d330b5. 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/NL4WT2300094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547fe55b082da59d7df4b6aa65086ad7d526ca48a45a5ae94ab1bfbbeae83f17. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/NL4WT2300113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee4fdc008fea793a9ce53af604b4d03fce0ef775e25053df9fdfd1bf716d761. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/NL4WT2300117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2a52afb5a5cce4054ba67946aaf0f6fd335a77fbe7885ec81a8aa7a65defae. 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/NL4WT2300136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc347533decfa39a28852f887c5bd6f94e18e7e99dd234e31e76e16a72befd5a4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/NL4WT2300145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2110a996ad03edadadaa4c105c098969f92995f07d27edcbad508c07be742c6f. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:53:46Z), 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/NL4WT2300267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9bc380be4b2ca69fd41488e9fe4260678e74e60af0469ea6cb9c46e1f0ca64. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/NL4WT2300291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be6dd6063f3637b26bdc2966eb4eb467a1970f0584e327589a6b0d571540fcf. 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/NL4WT2300320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7303d16bb710b1e38d047dfbbe1e21199c485c34cb9a67cc1abdad74cd95b5f6. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:49:04Z), 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/NL4WT2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dec2ede0882c5b22d5158d8a878bfdb204397228681123f7650211e3126c93d. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/NL4WT2400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632b1a4721d4c94c231f6d323ccf0017b2cecdc58ff877391e9c2f1209c90520. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/NL4WT2400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf28494856b52c46bdef3a22b95b1205eb43ecfabfe3057b28875dd1069cd70. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NL4WT2400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e92754c3063605f4754af622ae387377f0069fa8474c116c59f55c70c559194. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/NL4WT2400098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fac82088ac9815b7cccc9872352c26a877d57ec8da9f4a96bd5befb1e876e2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NL4WT2400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46b8e01af2a068ad449e3a1f30048d69fa1a12b9e995616cb5f90a00b35ca54. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NL4WT2400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7303d16bb710b1e38d047dfbbe1e21199c485c34cb9a67cc1abdad74cd95b5f6. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/NL4WT2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab582245d2913d3b2572f24f0978e1adc93f55d0fda33eb38aa5c093db09b77. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NL4WT2400152.