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 0xeff44dbc233f66ba54b585c0ea491c032c2dcef569cf31f74de6982abd6ea3b7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ab2ff35-6a63-4e3b-a3ad-eacd27405b1d.json and https://artists.proofprofile.net/proofs/artist/5ab2ff35-6a63-4e3b-a3ad-eacd27405b1d.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 0xe89be0a274e2f17cdf2b018fa1a9b3b3639e5a07f5e96b77e94473c1af717546. 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/GBRD51200172.
Murder Ya Sound - Gold Dubs & Crossy Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ebd7da99d499912af1e30fdc729393601901c84f4d1f18630d86e2fc5f4006. 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/UK6WC2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32aaea1a544451e5b8d3204ac765fc583b179385f4c49d09b26c26d3f427702a. 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/UK6WC2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84bbdf875b469912d14af32b8675167d6e79eff05964949947166c3312923dc6. 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/UK6WC2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3faf55e31d518ed3358d5f77871a81937e0c4c1be9704fc1cc6076c190a4c3f7. 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/UK6WC2100008.
The Valentines Massacre: Amen Project, Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eefb9849d043a5436f51b8ec411aa4919704d4ac4f1ba795c0068b67e3f1540. 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/UK6WC1400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64d6bc1fdc9187bcb70d434dbf0bd6fc031db0f0953c43a14b31a8f0abcec25. 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/GBQZQ1200697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8471f5e854c577bd7620e37799124f8b102c7c6acc9a15cf20ee39628978793. 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/GBQZQ1200698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf08a5cfff8698a7d1594496d03c0276bcae65a06360e74f6d170cf81ebfc6c9. 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/GBQZQ1200380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bef64c2076688ca08a79ed13822bebf5fbff484e769cdc98e08804de9a731ff. 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/GBQZQ1101450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd56dc55c53a68ffcf113e511f545f2074045ff6d462613a63969c1eb41bfae. 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/GBQZQ1101451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b97cd502b73917e103b6a4c26526f6009fdb1495debe38c96d943d0998efeef. 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/GBQZQ1101091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ca81496fa9b148137266277aac632d244664fc579bbbe2aab6eee5d10edab4. 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/GBQZQ1000621.
Natural Born Killaz - Best of Serial Killaz Vol 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bef64c2076688ca08a79ed13822bebf5fbff484e769cdc98e08804de9a731ff. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/GBQZQ1101450.