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 0xaca63550a75ca1caa040390ebd00e69f588227e3416e9a93fb58cf07536605d9. 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/d8f03665-92c5-4143-a2e8-42800b5efb90.json and https://artists.proofprofile.net/proofs/artist/d8f03665-92c5-4143-a2e8-42800b5efb90.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 0x8ae5d36570602fc40a3256c1f55c887c382d352dc30bf1c7d3cea56d2f53ae2c. 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/USAT21802013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae5d36570602fc40a3256c1f55c887c382d352dc30bf1c7d3cea56d2f53ae2c. Chain 2 (Bitcoin): anchored in block 957029 (2026-07-07T11:17:55Z), 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/USAT21802013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae5d36570602fc40a3256c1f55c887c382d352dc30bf1c7d3cea56d2f53ae2c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USAT21802013.
Line Without a Hook - 2022 TikTok Virals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae5d36570602fc40a3256c1f55c887c382d352dc30bf1c7d3cea56d2f53ae2c. 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/USAT21802013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547877c7b8f5b179c3b919b2d97d71d81d9306ee5068c2a18420aa665763359a. 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/TCADG1704111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd344cc2c94f7a53f0ab2188d139efca5c6d9f09b41f7c99d5e134b4eb84b3816. 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/TCADE1762939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4f2a09bc5e2c7bf3540e3ab4d7176d73432111723ecc2db39ad7cbf43a380e. 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/TCADG1704115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf7b22137daf0f46f3cb8334ea96eff4936e35906c0c573d40bde0454888255. 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/TCADG1704116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7c896cec9158980d719431317bf7aefd9c57f4c4c11fc8429add558dd11c6e. 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/TCADG1704117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b8874e1668ee869b215ee4ed39f0fb9c224dcd5ad3d7932e94ab5c6135ee85. 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/TCADG1704118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2758d5b2776a3b28565445210feac2ccc31acad9c9b284fe0cde2283c272f699. 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/TCACZ1745418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cea645d87d649cb8b636602b18581c74a324f73c91f515c83eeca31f1465ec. 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/TCADG1704121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d908a156fc0a33eb9f7fc250078110da4d02f22dad790356de8dd2f1927ceb7. 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/TCADG1704122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729ce06dee072f6917195e7817b0f74a8b17bf53854a843fd09922aa9f602a8a. 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/TCADG1704124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00e815eaf19207fdb86b93c4a2e3ff95ff1e95985bcf8f516319a8e67167051. 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/TCADG1704125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfbc4f2326aa5ba453b92577ad220ae889e961971255a64e5ed22e84cfff085. 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/TCADG1704128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b54dceedd3afa33b846c7123d8bef036a5c7ffe757a9605f6572b7d63b9458. 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/TCACS1630649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6221fb8bca23b561ef757887c64ee46a4e8acf624ac20d2b0f8eb7d0872a488. 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/TCADG1704133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe337cbd249e0cdf4da69e1f9f6aa6ac4e9126d958ea55427300fe58cea3cd111. 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/TCADG1704134.