thumb|right|upright=1.33|The structure of the DNA double helix (type B-DNA). The atoms in the structure are colour-coded by element and the detailed structures of two base pairs are shown in the botto
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 0xa51af791110677206c1c6c5649136698cb84a39d71fc466b5a82b50ff245c821. 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/e23065fb-01c6-4ab4-8d71-43fcd6f995db.json and https://artists.proofprofile.net/proofs/artist/e23065fb-01c6-4ab4-8d71-43fcd6f995db.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 0xdfa4ff621622e8e221443f97c6d8275eb64990ce00a0e41acbafe35a90949ca2. 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/QZK6G2104248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd965f93f8d64e3ed9f5ff4baf6ccfe9f64ce8c2343b33d47899c99e06a1109dd. 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/QZFZ42182742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25aafc5a649010a71768c6f6b0b9d15e5d03fb44514b8fef4f483ff8a137e5c4. 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/QZFZ42182747.
Street Fighter 6 x NERDS Clothing Presents: Steel Sessions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad65ebeefc3b967df040263e8a747965df2b8426b2ecb0ececbc71a519ea78f. 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/US5ED2304366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650e0047eef4f94b15dfe9f5a40c7679b2fa4479311e359917afaba608822821. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US5ED2304308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b3a2fe839e6741b0c4ec241659f8420eeb988fc270c27867e076bad0ce5c5e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US5ED2304367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a682811b1cd9019cd0e3d794171154bd2f2eeb850fff4aad21489b9c0bb51e9. 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/US5ED2304368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a623ec8d86640919cc08451fcca5cd5a5065f8f12abb104bf1fa6c1ae310bf. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:22:35Z), 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/US5ED2304369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e6055d43bb33b83007ac75ef158b166b6fa81726d1528ea8a5700961d19c35. 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/US5ED2304370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce5ae5b472254ecf5f1d5ec77250deb7a57a590c142eb4a7f4aefde5aa3cae3. 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/US5ED2304371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74571c6121217d38a63702dcdef53deabc3d42a58dbd4acd3ff7ead9bf830710. 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/US5ED2304372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb137bb2a9260122c9ded3dc50aeb7180c8304d4909fd4a49827baf3aaa800f. 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/US5ED2304374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20eb9be02bd97a007aaeabf7f823abaace13775890093a58b13e393fd03c737. 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/US5ED2304376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281f88f76d6fd69b810baa1578f4528fdd562f143e6836435a77e062cde42050. 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/US5ED2304377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7263ed274ca917d36fb1dd9392835b0c68b6acc160717eb466d7869101de02bc. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/US5ED2304378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4cdb0150a40a81407e725f12506f17d8cfd0958e22c870b97dd0fd4c579984. 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/US5ED2304379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf08965e4397be664f756ff15c375d585187ef90261b9118f3b53f7a0d9e7de7. 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/US5ED2304380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd7a8ac64ecdb69d6fc5a9d69d9fd7036971a11a52407de13d312ef6217f7d9. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/US5ED2304375.
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
Raising Kanan (Music from the Original TV Series, Season 3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea462082ce928909b8dd01c7e8ca06426d5412e81e20177ebda2c83a533b9ed. 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/USA2P2356236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9afab244efe9d81f1752d5e9da0b277ce7f631dcbc88077651212ddf3f7d2d. 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/USA2P2356239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac02a399fcb8c8a8e0c34fe24be153997e157db0ffa3c942a88f55e079970d0. 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/USA2P2356240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c56f640ee6e97f527eddd3d8d35f01bae3ab623a69b6202d504b48fb842760. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/USA2P2356241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7cbf5c69e6dcbea182b96e3ad1f7bc6f8dfeacf58147b73dd0e673ecc9bde2. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T08:44:13Z), 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/USA2P2356242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869e3024afc3d4081f403e683438d601f64f3789eb3f9ed41d1b2e6ba972903f. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USA2P2356238.
Street Fighter 6 x NERDS Clothing Presents: Steel Sessions (Instrumentals)