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 0xe74efca1683c8784c16bccf005c2a6d068cc264936c0f8c690812111f7056d4f. 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/87d1f797-987d-4ce9-add7-e93f158ef63d.json and https://artists.proofprofile.net/proofs/artist/87d1f797-987d-4ce9-add7-e93f158ef63d.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 0x2ec54c470ea3fa314634b4fed3857dd7e29430a8d81c97079df68b6e1fa98c61. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN81966885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6916598d774aec1120585a8807b936900a454e9ee01ca65fa79f2f33847f09b. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZHNA1927819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8fafcd76e9f8b8d06beab7449d14562f2429aff1383b980b09b744630f26a4. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZHNC1951033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6154eb49eaf17d71d02a8d30ca6961084e9d6befc6c18a8cee23e37ac0725a2. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZHNC1951034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3c45b74f43557b39017606dd9eda8f04638f1df1bb258dabd8ee7d8be5d58f. 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/QZHNC1951036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7127334b3d04d0b1f415588019882b8570009fd7ce4bf8e6720e50089a850d2a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFYZ2051441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818c401147b530e45f37a5d38ced832ff8bf3aeffd75837f9b371790fbb69396. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFYZ2051442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4b5643b5b3d090caf6ba62587fb939fd5f7f030dda01bd2130b6b86638880c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZFYZ2051443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cc579cc6be1772a690afa9cc5a4fae0bac24da0c451cdd76c077ca23a022e1. 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/QZDA52011814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde64d8ae2342b67f62cd45730b11ac3925844a721f6c127e6b86eae074a16655. 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/QZDA52011815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4bd9ea5a48acf7013bac40ec699ce980d7cf26ecb4e76f2f2dbe47a1a6d884. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZDA52011816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333b95af8b69493d5b50b1006903a30ce1aa86672f50e8224c17198f9beb932f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZES52055963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f8f2a8fc80ca8e0bff355cb28fd525727ef00c678bc6815298fb89af82269d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZES52055964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d981762b4e0ff5856f9b0d25a7d7fdc233d1b22d513d5376477861dd9a0b7c5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZES82001407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b091fecca39a5943a1d5e1f9dd02d3d8e6a1dce69eefd35e410b30bcba1ee9. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZES92036075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b928ae3f3c44d31776bb994e2f5547368fb431c7ecd92cb62c4d086be1610e4. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZES92036076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd3f3c68f0f0fa9e1fb248c3002ceea1c5bbde6155f6297723b2a6e86fecceb. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZES92036077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e70db4df5a64e405f3670f1e65d7baed8c8741646c6b51c1a719c9eb0a6ce32. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QZK6M2058259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a1a694e04b2d10b003b6300b3925841e402fb7d29a6d78221b197eb798eda2. 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/QZMEP2029549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe908844c71cc9a11e4933667b05cd9c121e02de0393e1ea3e11c8809ebf71306. 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/QZMEP2029550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbb0a971aae94fb1ca6805ddfc4d6bd7b660b67538ed99ce1fea8bba47ef869. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZMEP2029551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5de8d8c2553daec756def14d1a43b7125a49799ec58c86c1d64ebe551287ac. 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/QZMEP2029552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60914e3b3e4bdead2b2e8ca642218d3f25899ef9f3f35b9713d2a9799e3e4926. 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/QZMEP2029553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73780a6eb9c32bea36c467e8a542341bc1756ace63dfd40f6e41f1c3f26da24d. 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/QZMEP2029554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94172d87f8224d896b59f07b24a2c3f5c4a99f6c7934930dd939db528317ab6. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZMEP2029555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7c5d4b66b014320ee37085732f1dd247baaf8e270305f5c46e37270bfdcb82. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/QZMEP2029556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4620cc0c4553fc21503cce4534a53a50034ab9d6e59de0ff009e2d679910ab5c. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZMEP2029557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44369b39b1675ea9077d1b3491861bedd1fc0ee5746fe40cef9079e814a48083. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZMEP2029558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a3e31ec5822f2965f3ec796139583f8a2e2ce35258e509e374be4f3f14e7bf. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZMEP2029559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c183dd777c4f5c03f8595c2fa2a3a4a1832d22d85276715066d0fe9b81672c. 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/QZMEP2029560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae8e44b573b777a555dd0d89507c47dcf9cae396bfeb23d4c74e0978647beaf. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZMEP2029561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb384f8d31f76fd2405e97ed813fe0243fb0dd2e1aefcdc7a0f3b332a548d6bc5. 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/QZNWY2098555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6690aa0caab1b88b5bd8f900497b65eb435d9284eb42893b10d843ce1a6ded66. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNWY2098557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037b286cd66bdb4850a2bc333e6a9f2ae47159aa9c67bc9f402062b6a652470e. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZNWY2098558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1e4c53580475064e63cd2937720a60a4d311cb8b5aa6bcb78515d6a988e5e4. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZNWY2098559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18adaa9c19055e94d3f05ba6392b9111e5f8e3e951f8b5f78a18b4aa2fdb40ab. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/QZHN52115240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf0bab0f91cb1320ee87cfb09e55d4623c541e07e89420ee382e7af4bf356d3. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZHN52115241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eec496a8346b76da822b2bfc22b683983797ed27e5c52c8d40a3e3d0f9739e0. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/QZHN52115242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b122a6fd98ed04d99d4205c8035e50939ef08c04a1610a47f2006da6bec295. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/QZHN52115243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8668b8ef0592d19fc504d0be80b8a206ff350e096cb6ee723c1dcc55b73c3667. 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/QZHN52115244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d52be060430683919a9f32005ab24f49f09276efdef8434cbd4bfe91f5b709. 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/QZHN52115245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2466c205ed75bddb2142fdef0e9a4a7e74f4ac9a7e6d7b785b20701b45e5fe. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZHN52115246.