thumb|right|Schäfer Heinrich with some of his sheep (2010) Heinrich Gersmeier, better known as Schäfer Heinrich, is a German farmer, who was looking for a woman in the German TV show Bauer sucht Frau.
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 0x8495cc8004cca8fea1574f38aaeadd323ae5a2a2305a5e4f6511be98e1d69ca9. 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/c23447a6-47cf-4bd0-a14a-90ac411640a8.json and https://artists.proofprofile.net/proofs/artist/c23447a6-47cf-4bd0-a14a-90ac411640a8.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 0xf404d287d35ba384781eb6aafeb080cc5f74243b33f81bb6cafeda18fd5b97a8. 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/DEEQ82300088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5aa345c080e215157a017ebc1e8c6331c9dedbb8b21eb240d8fe8e477a88475. 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/DEEQ82200099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d750076988a31d978744a5bf2333daf390822443c56f3a270c0aaffeccce55e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEEQ82000116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719f508d1de38f96796e986f1acec4aad84eb815fa91057f978c7c56c1e2529f. 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/DEEQ81900132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeacc2158dc35baa6da462993bf4c8a31930559600993a603aa457c9d960072ff. 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/DEEQ81700028.
Millionen Frauen lieben mich (Xtreme Scha[r]f Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2e95d980bef2a4844a2b2a824c243238e6d4011860ad9efd89615bc5aefcaf. 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/DEEQ81100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d35cf7c4fabaf720090cf7bf56c70bbea31674a6079129a5dd309032a17457. 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/DEEQ82400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926fbbfd2dfa7e50a61a92019bed51f06e92b7eea8e173e853e72235fdb75b76. 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/DEEQ80900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95236550d5d1f938c1d2b9b2c5f953937aea8a64aed0c8334ec8bef74e2a1fed. 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/DEEQ81600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b238f3cd55a913fe49a441ab63da486eaed85ceb6d986b0ff701fb3c65561c1. 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/DEEQ81400072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c966ccffcd506a46723cf6dc51fdba396723aa158de026ad88566d9c49483e. 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/DEEQ81500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443f86e5dd936733d6cd417446233164cc670f43be4612fe5d9ed4b405b45e4e. 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/DEA349900545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ce67e9883ccfeb894a081b760f3bbe3bbf8ddc754d163c774e59a9cf3ec98a. 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/DEA349600151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f594e544be8a3f2b0dc26f6d52f161286937d48ce34b9478d130bfd89f58f4. 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/DEA340000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f2e9fddb6e8538f86697c6db39e4536cafba1a55e88c059b8ff932dbddc6fb. 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/DEC611000082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4db239317526f52edc54a1c0211c80ac7e86a0b412a0215b766cdcb0644e460. 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/GBRUR0900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ca77293f4e8de20290a087bb7a2ac5704d48f8e0b28f7fd57f79cdd8bedf49. 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/DEQS91500511.
Guildo Horn & Die Orthopädischen Strümpfe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcefa7b8cdeb8f46c04e1dfdfd93a990f4361681d763a2ce5776881c7f5d58be. 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/DEA349800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998ca4d2b273966767098638df31995f348f1fa1a443214275cb34b6586cc103. 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/DEC610900391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02ebecda87541f4ec1aa537751854c9d35b5a7d1447f40e68ebad353a38b1cc. 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/DEEQ80800049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f92aeca1e2b5b7be48e13c23acfffcb15b4c8622432e339d1285f3f96be3577. 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/DEC610800455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6618e62a53d923e532013faa86da36330c1badd010d092e95207a92cc85d8c90. 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/DEEQ81100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc1b0143f89aedb96d793f2b45b62e60f01bdc9f4b0593b2a1d1830c38c19cb. 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/DEEQ82500027.