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 0x84df3ee4f4b0d48d6055796fff9926297dcce465fa5d35a936cdf2ad81ed438c. 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/839617e4-91a9-4020-9d75-b2f26bc11b37.json and https://artists.proofprofile.net/proofs/artist/839617e4-91a9-4020-9d75-b2f26bc11b37.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 0xb25747cbd6f7d38d65f3a69f71e130633ad857c189d28a2a283b1baf251c32d8. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:01:53Z), 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/DE1JU0014686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c0bba96bc3b0f33b8255c608bd0899a6ee6314798a20410d294e10a7b2678f. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:01:07Z), 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/DE1JU0014688.
Ein Kopf voll Gold (Was neurodivergente Kinder brauchen und wie wir sie stärken können)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba99684be0923e64e3cad586478efec89b7962904ee690247515d94a7e4a3b12. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/DE1JK1610718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a76b2f8903bbbcdc10050fff4f0f9c4ec29a4de0c17537faa596f89939a9223. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/DE1JK1610719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6e9f0d61984f8e8dfae63d05e6b3bc3cd9e5b53a9b0af5fbbe6d9a483f9c29. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DE1JK1610720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46e1c450daffa4c2dc8d1d5b16fcf576e9077b88cabfb7c929edf79c52661cc. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DE1JK1610721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0ecfad80012f13dc2eb6db0bbf8aaf7065ddb21e7cdd7da6089cc70dd24176. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DE1JK1610722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba84f402d71f20645473df5c9b1a442b6799e1b4ea199d3c5e9219c049e772c. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/DE1JK1610723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3b82facbb03e61a149a9e85e9197b4a912e7a07a7aec87d418aeb0889f12a3. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/DE1JK1610724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734ff148ab24e5020c094bfbc3ad19469516b95c18c2bb394b1b64ac216a41ab. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:18:27Z), 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/DE1JK1610725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671d2cd2e6c9f28c38b89670a6d8c468248dda2bd5344b1e51fd8cf19568c6fa. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/DE1JK1610726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cf4f2f3b6078e22dd6aedf9319a40b66ac7a7bb3f2bef80dab9ea1cca3b5f7. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/DE1JK1610727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17693c26abbc9de78c2d0886385469b6fcbacdb463f0883f4fcd65ac4ec6de14. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/DE1JK1610728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d574ff8512385c1ddae08217dab08bab612f6c311135c494b28af6095ac8b1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DE1JK1610729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84ab15e4c9de962a06f37945188063cf061c41ea54a7866adc3cdeb00727a05. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/DE1JK1610730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146b62c1fc714436cf708473634a79a5922f587cf73f7f10c7a9cb554f11cd9b. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:22:09Z), 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/DE1JK1610731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f08beb3f0673dbc148fe181af5c09e0345ee84464fff3a16f27e3be3ea69b3. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/DE1JK1610732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa757193b311c5d51c5f8d7332202a0f359ec5122d2fba2fb8e7615482531c83c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DE1JK1610733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5ef22c4eaf1aad82bcf5eea2757fa8d168289e5434392f3430835712a8d7cd. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:41:58Z), 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/DE1JK1610734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e37362f63b360d2696b4c556a80800c371260b50df0e1d4127b2e145c304630. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DE1JK1610735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda323f378d33f3cc78f1939089fb05a8360bdcd7543e38c28497021ca3ffd47. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DE1JK1610736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ace623c6217acc4b1d10bd33fd2b7f64ca0a1077f34c0650a3054506f3577b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DE1JK1610737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1acd739fab4d7bd4292692b3db160ea3fc39d46b229eaa4c02763ee584e173ac. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:18:33Z), 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/DE1JK1610738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd192971686f1e87fdc99d8ccc72d7221030b62acaaa800c514c990f17ae85005. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:33:52Z), 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/DE1JK1610739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704094c17889962a20bab682e5314fcf2b2de8870e3c6b52a46c432f89b51f13. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DE1JK1610740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1863c3674e0ec5b9a5ea08e0489e4057999817cbdbf133b920f6aa0f4351d83. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:56:27Z), 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/DE1JK1610741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5707bddd323357827a41c692676ca0b985e25f8adb25b3255f25f1c681d7a2. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/DE1JK1610742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3548280cc2568d3fc9efab8cb41a84cdf6710315502defffac92b3064a8d5f9d. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:01:26Z), 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/DE1JK1610743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4714b5cf7476437121b5ec5187a2aba44b382e11d7a5791219b9795462077334. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DE1JK1610744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b0e6ee428b48f9e7fe2c7fcccf4ec44c751adb890e2c65c6eaec4c8099822d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DE1JK1610748.