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 0xc53a8d092fb2ac02c25535b89a1453617d0a9a1dfd2903df52de68e7c0cd7c94. 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/b6a895dc-5c46-40a4-9d6e-1429fd982c2f.json and https://artists.proofprofile.net/proofs/artist/b6a895dc-5c46-40a4-9d6e-1429fd982c2f.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 0xaae8e3c1f8e1929116379e346a6d8467ea0c62752b6e092b10e84a28e453ce8f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEN062300351.
All Day Fever (Jaxx Inc. x E-Max 2K23 Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b65f83cef240aca4987440066b41afd30157a0808c6edcce402ab4e1232e95. 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/DEN062300632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2a483882b9ed3594298d5cd6c7b57b1080069c2843482f440e40bc58d20ed4. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEN062300793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd099d66ca0f56828560d240e69cffd102adaf4b3f8f6d35248652ad7a4adf365. 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/BEIW12400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f849309c9eeb8b1a73fc9f5a2ca83e485ae1f3d5adb49c3f608ddfc24ee1da1. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/DEN062400318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef2fb2ab5436434cc826fe047946e0f99634b82d7ceaac45cb8cfbd34f2c5eb. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/BEIW12400483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459fe32043cff0eaab5966b44b1c1e90d7b79a10a6d119b83697f225f130563b. 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/GBKQU2478947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48347b4f47b8f0b7d44bb942a763bd04a62820e8da4f0e68efa365f6f9561c8. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/DEN062400697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2fa51149a407cc35b2aa90f76a43a15cdeebf9be00e0520fd5169afe571551. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/BEIW12401047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e5bbe0af8d68ac94662215e373dbb66982eab5c5e98122e03df64227aba4d0. 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/HUA480900900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218d81e15fcbfa651c8822a0aad285a0a8766038e9bec63cc02f44109d06cfc7. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZZEC2479539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532804cc34cf44b0fd19036e3c1dd46b3f96b46222894ab25160a2216fcbbacb. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBKQU2594832.
Catchfire (Sun Sun Sun) (feat. Anna Leyne) - Jaxx Inc. Remix
Catchfire (Sun Sun Sun) [feat. Anna Leyne] [Remixes]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1895df5655e5d1c7595047a47cbf4e83cca763ce871d101a3370141938dc93. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:47:11Z), 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/IT0311500188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdd064887d7c25a74fac74126c130e166fceb4a4e35d64a3c331e7de8a9505e. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/HUA480900957.
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