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 0xbd8f74d65263457c2aac857d9ec68ae7351200943ab690133e410659d9281d3d. 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/6fc50470-f0e8-41a1-878d-180f46eba7b4.json and https://artists.proofprofile.net/proofs/artist/6fc50470-f0e8-41a1-878d-180f46eba7b4.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 0xcb8fe6c629ec5ac4a63f07ed10a066966b18f92847e90b30f4cd82009bf7f1a4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNWU2367659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee6b9494232090fa5d5793f3f6e733e04ab82df3e151960d6f4c25bab03c8b4. 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/QZTB32381032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68856075d9ccc3c67983ff6937876a8d1dbf3f9187c12fdca00136693dcf8dfb. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:06:22Z), 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/DEOZ31300129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25eed0071fd4c85b43b5c54e44e50052302ee93d8ed2580efaac54ab5d8e3da5. 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/DEOZ31300130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0d19548dec714ac8ac7cb705b0f95c3b9f54bb9f8a12be793ae88ac08d5c16. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:40:23Z), 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/DEOZ31300131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63b665738c43b79ee5cafc428b9de53c7562ddfa23c641e50bb30bd9787b9a2. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:16:57Z), 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/DEOZ31300134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9cdb079cf91b9a58783f39cbb1877c8504aebcecca55b3d05b46704fac5d5a. 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/DEOZ31300136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b70e21293d4f1dd6f3d1048df406c2c8d1c574d6df842157382c4180ee9833. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEOZ31300137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f7520379df5e90c2cf45e8b419f5f87fcb9aff9784a148dc14f01c70daa7f4. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/DEOZ31300139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50af3b63df85d350fb821f6d39033632ff6a49b71537dca1257b78818b813576. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:03:49Z), 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/DEOZ31600232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532c2ae79ee94a7afc8ba8d350e872127374b65f9e7e52814358fe220c2a4b5c. 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/DEOZ31600234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62a4a1e301a7b97dfe3a1b27b94db1179ad525af83c8faa222e37010298087e. 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/DEOZ31600235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81d5143815d0d47bc9f6d3a778b167c4cc9a04b070d0728c24cff0fb266b9be. 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/DEOZ31700300.
The Great VHS Battle - Grailknights Live in Grailham City
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884e789a0b73e1ee5e3556384e0273b10ac4a2f0212fefd4f472b77da83a1ddb. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:13:18Z), 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/DEOZ32100335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5634d49ea747097cf2c4343a99c0750cfd8671f12c10ce7b6f0784ccf3d71bc3. Chain 2 (Bitcoin): anchored in block 957685 (2026-07-12T09:26:00Z), 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/DEOZ32100338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba326e90996977b13e063869810b47b949fa3b92e388708e1595632faf1ac2f. 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/DEOZ32100340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ccd656a85ce3a50852adc8afb3b6da61b654518517480e56a2713f9d3df6a3. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEOZ32100341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4868f504dbfdb502cc0174801e575eb85a49ef1a0d9e805fcf8be850d239393b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DE1KY2506711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4542376b97872dc0b1a91e7e04af8024012cb751c925ccca6c061594f6fb98. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DE1KY2506717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82909d8cccd733ffda3a679d84a8c1b955bb3b9a0a9971055679785655c18cc7. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DE1KY2506499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c56741c2a473ed6bcc9affc238fe71fff3a87550600d0209577ec0ef0905aeb. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/DE1KY2506572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4542376b97872dc0b1a91e7e04af8024012cb751c925ccca6c061594f6fb98. 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/DE1KY2506717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82909d8cccd733ffda3a679d84a8c1b955bb3b9a0a9971055679785655c18cc7. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DE1KY2506499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c56741c2a473ed6bcc9affc238fe71fff3a87550600d0209577ec0ef0905aeb. 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/DE1KY2506572.