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 0xc36afb69afc9fb7d921dd3fdad059cc86fe5a342bbfb98da2e43159c3784a060. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff1a8ad5-a049-4151-bd77-e701eb2458e9.json and https://artists.proofprofile.net/proofs/artist/ff1a8ad5-a049-4151-bd77-e701eb2458e9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Long Days, Hot Nigths - Claptone Radio Edit
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 0x3f3ce00af4c19f607ad86dce99460e4b74c0dc6f2f844ddaa6c0790efbccf418. 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/DEGL61400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ed57890fb058aba005d5a8ccddd3d82aafa23437af0f66de01fd6d8762fb10. 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/DEAR41426708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745896573dcbd7b2005ef72e65785923d1fa4e6991b1bb9e12897bed0a95f337. 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/DEH741412409.
Sense of You - Dirk Hermann & Andreas Mueller Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2a1e45dd12bd27416d1297ee1f9eefb6fdc0b6ca4b023ba93cb4055654d037. 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/DEH741412408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff382b252e0e510200549227666de7a0e5c03aed52cada8f3097719606ff32f. 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/DEAR41418241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77feb2359eb48ce94342289c79fd87ab2c28b18390a6e853b9fd9dfab079dd7e. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/GBKQU1417191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee55076d9c294c9324c8d32a031ae1719e50c5f17ea9ef72e86c34eb0ab0123. 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/DEH741313268.
Vermillion - Andre Crom & Chi Thanh Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510b80987e0c92a956e04541d11eb7c23879daf9917d98adec8eb9f1ce3ef2fa. 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/GB0001400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b6c981d74c354772ec1dc993352dd080db1555545e13ab50cde83f0e6e04c8. 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/USYF71200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5944c9ee091012d741c5ad601a90ef1809954abbfbd82cd60ca58da80ba6b5. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/ATL521404101.
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 0x0f1881b6591d693de469613028661ef3e9d3839744293eafb8027f55a1e1aaa4. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:11:40Z), 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/ATL521504415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2368945788e94028dc5a36f26614f3c5b0f8a2c99769b8b3da1db039f961958. 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/GBBKS1300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6540642afd519dbff6928a1c072caf6ef0aeb5b46261e214f35769985f8b759c. 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/DEU671400277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc857727c958641f8a68114b4628c92c20a9449f6b94efbfc80da7b84438ed338. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/UK5AP1400262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6703b439314d394a5cb537b98f14da9d2b8763ea41d72c87641d984daca86988. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBEH41304640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02bb7e86fd978b8501d91829db66184fb5aa348f662e3969d8b69d3bef0e745. 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/ES84B1310228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb722fb555d2a46796df12b3904d3475fa5067eb4ee5e6cc0281ba52ddcef7b72. 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/NLEW21400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7a74860ae6ac5f9da67cdb3ad0a7b787a9de90863ef3806e534ba9afc6a4c5. 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/DEBL60657404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7171e8cea4a8a2b0ccf1f6221bf990b888f338ebd777d6d0058e18878c0e4ca. 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/DEU671200175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca688278c7a0500728053305ca710c721a0d35950174c11a937cb4e391eb479. 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/DEU671202224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b142ceff5f74598f55ef9bb00b863f8436853a2b7e69246e7c371fc752348d. 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/KRC711600013.
Chalet Beat No.4 - The Sound of Kitz Alps @ Maierl (Compiled by DJ Hoody)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045923871850d2fb60169080de680dc0030f232b659509e9edb2f4b35caa6926. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEU231600810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe684ab4c1b04909c93e84dd0022ad1a7d92aa736fd8d222d7135762fa50b0324. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/ATL521203602.