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 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 0x8d6fe8a2b3d4fce527239914a844e3b87daca849fdb4c284656c39e6f5172ec9. 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/87617106-ea88-49a3-b327-6a8e3f1e5247.json and https://artists.proofprofile.net/proofs/artist/87617106-ea88-49a3-b327-6a8e3f1e5247.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 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 0x7b55e2b964ab6530cfebff9734b4030ea49b2e06e998257ca04796114f923103. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/DKBDB2501401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afd287fb3850ac4555c42b21b5efa2a4c5a75be77e4a3f830649cc6a3863d00. 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/DKBDB2501402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9071685c86547f4c5730334e37d8022d0bed8db7fa2cb8d028df90cd5a87fe9. 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/DKBDB2501403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0545965e0da7dcc49a963f16d0a637982fe8492aba4a3902209a28afd65dcc60. 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/DKBDB2501404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc572ee65ecf48be19c54d7ae4f6b9a7205569f90b1499ad94989b6fc0339e0f3. 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/DKBDB2501405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400867b0e82fa775e37f4f8d0afe69bc2832fbd7ca9c8a138fa8acd31bd37a72. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/DKBDB2501406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a10d36218419ce5ebcd165022b724308cc71e0e1727d4c05f864cdb8c680a26. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/DKBDB2501407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabbd257538ed330a3697e8f199dc716837c5bf12657e007ec20763ffda8be6c. 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/DKBDB2501408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300372956354906d6da861653e09ee5e5efa07a5f6a703ad2e7a5790ce01d757. 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/DKBDB2501409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd4f07b7f383ae25387c3c52d726afcb3bc2f45d3cdcb424713ac7a191d83cd. 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/DKBDB2501410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabba03427b2b580ac9d5038f1f3a85cea01d45826b3991f8ec36275f6992c0a3. 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/DKBDB2501411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2253ce6b95a348508483bf938ca88f68f077f86c740fb4c528a05c0286b05a. 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/DKEFA1900909.
Darkness In The Light (feat. Ava Joseph & Giacomo Smith)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d8ce49ed83cd5ca194cf8f48985771fe712ece613c4e5d576488b61e224a32. 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/UKEKP2200002.
Darkness in the Light (feat. Ava Joseph & Giacomo Smith)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe934176a3a2939dd277b8210d3654285a83cb5c0f3c647bc04d7d33b99647dd2. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FRE9V2200240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5c481cf1f482e5520a83fa62feffead0f6411d30e5823387d562d80d5629fe. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/FRE9V2200290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf606b363c2c6776d936cf23b29c5e4ad0f268c30fb0d2e736cb884a3e58bdf57. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/FRE9V2200320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6290d32af036e8f85742c30873581bec9a91e965bf73e981f562fdf5973a4b. 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/DKBDB2401301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21a0a8334ba49f163533eeee51057121255a1df355e3545ccd9bb094dd2d9b5. 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/DKBDB2401302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83164df1b532cbc5933bdfd0893706c5f1b00dffdfc34920ea7ce5a8d6543e34. 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/DKBDB2401303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf52632cfd33adae45fbb8e0b83aab8e458ba9c18bbd8efbd76e2bfb59578c8. 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/DKBDB2401304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e98183257b8191fe756de84f43d64113120d9df4240b3c72924a139b83a130. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DKBDB2401305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76eed92bb6e825c56b17f86c7e519833b4ee6f0e35a395e290803ff452819683. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/DKBDB2401306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3cb05b40c7211f41e0abc64a15630eccc69808c63b74efab2c484d86862ff8. 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/DKBDB2401307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca15984aafe86eb1fd9f75da19a2dafb7f87fa7146304195ae3b318cff9da4c. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/DKBDB2401309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83164df1b532cbc5933bdfd0893706c5f1b00dffdfc34920ea7ce5a8d6543e34. 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/DKBDB2401303.