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 0xf26e2fbd106dee1373ea4ebd7399fbb6c38ab8a08c10e1f523a21df669b10264. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/765acf15-e7ed-442e-bd8c-9fbcfdf1936b.json and https://artists.proofprofile.net/proofs/artist/765acf15-e7ed-442e-bd8c-9fbcfdf1936b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Zelda II, The Adventure of Link: Palace Theme
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 0x9f80011b53b3b4bfe174cc02d8abccd5dcd4d51725c5a5014bc4e0f37421ffbd. 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/QZRP52240982.
Thanatos (From"Neon Genesis Evangelion")
Zaraki Kenpachi vs Unohana (From " Thousand Year Bloodwar")
Fairy (From "The Legend of Zelda: A Link to the Past")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5387ba519b7c9765876907d604ee51433ca127548cce25cfab2b4dfe5c785a0e. 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/QZNWY2558091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d24da11fc60f467f5a109df32b949ffe600e86c3e0e3ac51365f955ff83d36. 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/QZTAS2375064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51382b0ff2da5e9bb93e39ad7571c24559955ca9f3c2dd27c82b1938f0288e47. 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/QZTAS2375065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44e74988817ecb96aa5e369c12cb7126d8ccc5ed9e403edd8502606af17d344. 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/QZTAS2375066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709f7b9bf4559245507fc9ecd308840d2390a9a5df36cef6810ca2e30f4363e3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTAS2375067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe9de2f3424592bf4063192bbefa35e52229b2d9aad2da666ae6599555d85dc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTAS2375068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf4376ad5248c20ab1dba1b84a6536b987c2c52dc2793cc95fb97bf1e2ffc26. 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/QZTAS2375069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9043e0b09b991d036cc6129497fffb7ef8a0567267a577cbaad7572ea5874f1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTAS2375070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161148423b41faf759f8e36dd37afe12198729f29ac1e808ea30873823e9fd6f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTAS2375071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb00519378bfa20184b2372445106d612a98dd6c9a980f7fb48027721b93ba7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTAS2375072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe64055b042b10fc788922972c0aa1d3c85dc92bc681048d55741773ed540e8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTAS2375073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f9f1dff738eeabb7b4e3b341b4a9257b52bbebc69a3a4bfd062de1b8ffc4e1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZK6K2385726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2406829d024317803fd33a0d9fa994935ff54c8b525142cd4aa406faa330f24. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZK6K2385727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9451c2d6698e4501f21bb775de6105cd51bada93e09562b67cd94e697703b4. 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/QZK6K2385728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d56493f1879b9a4cb98b6d52b21b9992917f972f5dce1e1b2f31b0f0b1cc6c. 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/QZK6K2385729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8549f647d3c32ca4725f92314b535f9b710f22e8a929f2070814a47ed8a00b9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZK6K2385731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4e691c97e9df61482b1ea5f4fea3b83378d59a3f0596e9984b3adb720ddfd0. 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/QZK6K2385732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6db375fd408f122dcd5ce7ca5d0fb9accb5f141d0d45c13b680b52ab9a76b00. 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/QZK6K2385733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7503cba31e73ffa9ec81e03a0a8e0af4ffb942de1715197e4a2fb3494012f5. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZK6K2385724.
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 0xe9cec9cd116fa4287a6400238d46ab8a564cf4335b9761d4aae59fdb736e6013. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZK6K2385725.