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 0x9fc4a11826e2b1a862ecbeade2eb5c16d1e4437e010fc34b99fd2bc90f337269. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/daa1843f-f10b-4f2f-a19e-94a46e114ace.json and https://artists.proofprofile.net/proofs/artist/daa1843f-f10b-4f2f-a19e-94a46e114ace.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 0x88a04ff9f404556c615a43b5635193117d0afbd66ccb92097b313641c44362a3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEH741714434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7640721a924ccb4938a4f573a1f9ba32d895babb9af9bef0227cafe05445be36. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/DEH741714433.
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
You Know The Business (Angelo Dore Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54d4089586f6d759c9be39aa3f28995daa71a43a2589ef1de492ca93ec4cc86. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBKQU1648706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7070150a9771a51397f0127ae771c2c9259b99f5585ead4b68edaf3e148010ec. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/GBKQU1648707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5421d170ab473147df0ea02504b36a3962c33174e3a68fca42abbcc4014627. 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/GBKQU1466467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd4b432fb129d2ed7d514fd2cd3b6af2b12dcb20504d728372a22aee65f1a58. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/ES61A1215701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9412cf60e04935493bfc52e779f958463a6411c84d84c693c9147c4d64f3daf. 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/ES61A1219201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db47be69ec69daa65bc1945c4bc206412092a9954e0bdd53c3e8d614dc00276. 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/ES61A1222101.
Poka Plak - Jus Deelax, Ferran Aguado 2012 Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143cc88f0762630b1b0a325c8497d03c0d7dd4a6a59ebbf5ff329cc24580e49e. 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/ES98I1203544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91433139bcaa829227c40f3152d97cef75643b63ff3ddbeb1434bfaa9dda4aad. 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/ES61A1227620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cffad3ad15058b4f076557f3acb2ed2b3d4d49020f8f0fc9b9dec71d476acd. 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/ITD451400174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8531e67468cbc57d40a11c640e6ff0ed94f1d8cb04c9e9b689e1991b4cd0439. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES60B1300864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25224280eecbb01639f3ef8bc92ff356ee0c76835c74c10361329d82a61426a2. 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/USLZJ1380305.
Hungry Koala Presents : Funky Minimal Volume 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb137d1c2f0d40958e6d2e26a3fb0f24f6e4ef28446236ba2962106f4f0b7229a. 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/CA5KR1503862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d05f65f2a8a3fc84788a71293a0812948a8dc7a8477b9a5485255514847010f. 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/CA5KR1501982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb87374279181c912fdffb924c34e434aef88d8dd0473684d301fd785073f210. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ITD451400152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da693a0e14183abe477f810038e1ffa2813fbdd5dd0503de78b77d2af709c61. 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/ES60B1100989.