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 0xb3befa7a874d3f714f8f47e5c3b35be72bbb681c0735150f555e0783c6dbf3a6. 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/5f5af1dc-e5e8-412d-8da5-8c00ee8ba896.json and https://artists.proofprofile.net/proofs/artist/5f5af1dc-e5e8-412d-8da5-8c00ee8ba896.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 0xdf04a850c0a409d6256cd73659819a27cf197f94f1d7305eeea2d0907e63b461. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:25:18Z), 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/DEL021240012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf04a850c0a409d6256cd73659819a27cf197f94f1d7305eeea2d0907e63b461. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DEL021240012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe021ec5f0c776939e8c16170dc940099058345707531a1e7470d1d79094c33b1. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:47:11Z), 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/DETB31800225.
Mt Gordon (The Drama of Mt Gordon Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59696b61986b1386db4f2e9c260448ddd9585aa529838cb26a757a457cb265bb. 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/DECY52000929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14a52249c964acddae0eb61877216aecba793bc46cb93679fd3f307234a82d9. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:22:59Z), 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/DECY52003347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c973f54863fb51ebde2b3b0218b57d87265668fe8320e65c9d3711a1f409d71. 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/DECY52200436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755c8dce44bb11aa626f46ad9cb2e899cbb3521e2b4c894f1d1a1623be02bdb1. 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/DECY52200437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664efdd8e8a9553d44080e8f59d27c77251da54d0a97a37b19047eec58f44246. 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/DECY52200637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de0f0b7ccf217dcfabab660a226c21d533677e413655aa980bb4820e807f730. 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/DECY52200639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755c8dce44bb11aa626f46ad9cb2e899cbb3521e2b4c894f1d1a1623be02bdb1. 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/DECY52200437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1d3656adf39fe9b6ff1c8c912bc5d0f43a5798eeec04b110000013a62f9df5. 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/DECY52200337.
Something Unique - Johannes Albert Italo Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea018acb17255d047a55ee899a57ddac94b90b50178ddcfe29d1c4e7e099626. 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/DETB32302601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6caaa42cb3da625b1328a5e3e08238eb4a343f2f4d77bac5ef57ef2561a305. 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/DETB32400139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160c139caa9ffbe380f14eb1bc5794e6193716540b7618ba45c0ed5473557d34. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:07:39Z), 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/DETB32400949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7449470776b85349a83eb6d70bba7eb4141e98e68ea6c5860a751811df6573f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/DETB32400951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786ac828c143b71baecbc340d81c9b7bae82e3aca7ddfd994ee15dfb906c65e4. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DETB32401053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7449470776b85349a83eb6d70bba7eb4141e98e68ea6c5860a751811df6573f. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:48:28Z), 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/DETB32400951.