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 0xf8cf77b91167fd79a38b7f94821179ba154c9dc5a50dfbda691441389c58d07a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/907bf6b7-cc09-498b-bbdf-287ed48a6b52.json and https://artists.proofprofile.net/proofs/artist/907bf6b7-cc09-498b-bbdf-287ed48a6b52.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 0x023d16838863c1704a6dc0f22ef828885df38e16279256d053c3bcd66726dc39. 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/TCAGD2219679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc464279f4004e131c4afc1cc29bf1b8cf7c47d568d8e459eb56e638216e4bf0. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/TCAGD2219693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64033dd241cdd6db766d2d5ec7c18edfcd837bf1193c546b772ec7f724410fb. 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/TCAGD2219696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd853a3aab1a2cefc340cc3abffaea0c40a3a2345e2e859429973d4964ba3c24d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCAGD2219698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998f7418f613c3c985c7ba3a75190905b4f4fb8decb3ca76f5951df3b18357ed. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAGD2219716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9606d2f6faa5d1a91d348d32a8e55329ef8e4103854c4e1827737d24e122d25f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:10:06Z), 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/DEPI82407878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280ca2c029a62394103bca7cc5f0e86d5a48b41027c7990fb63b3776cf9a3a05. 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/DEPI82407881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7bf8e9925ea465959f9a1a92042365283cb212514a26e3e81f918ed100b5bc. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/DEPI82407882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd3809f5e18aee64fe23ebe3a71e083d3d5c35cf0dbef25526a1333181a68a9. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/DEPI82407883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5dbcd2016ce3a86bc616671076814c829fcae5588a7756a380d8a85de7a7053. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:00:37Z), 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/DEPI82407884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854c40e2f773aead6b9df4eefab13b949ffbe08b0cc5f8aad791e2dfa2021339. 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/DEPI82407885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf62bf3244ce9ef60cd70602245fc6b47a01627cb9eded4c645828ef0bac9845. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:06:22Z), 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/DEPI82407886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858086d8ebea1a04384d29eabccb6df6caab9f7cd0c0ebf49ee85ebb440e224f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/DEPI82418648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf599b0ba9a6a53f3c9947058f0b26120f1d3c7e388fcfce484e038a13af756. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/DEPI82448810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858086d8ebea1a04384d29eabccb6df6caab9f7cd0c0ebf49ee85ebb440e224f. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/DEPI82418648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5b3fce5c03b1e7e697fcd1ce1a535b0da62ad438dd24fa5b566343e18eb7d4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEPI82433009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66092883cd7b1285445d84d996076401f7edf0cb3a0b8e2edfffdf7eb62b985a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEPI82441602.
Die Nacht Der Geschichten in Leipzig (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587d1c6f1b367d347fb0430a01f6fc6cb800ac126fc87b49f466fde79bb04b2a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEZG92616010.