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 0xd078c63a7d0a4a4eaaf07cf8cb3c27bd88dec2c958233c0a6b356a4aad3cb205. 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/bae1591e-0f71-4e0e-b2a6-bb78bf921836.json and https://artists.proofprofile.net/proofs/artist/bae1591e-0f71-4e0e-b2a6-bb78bf921836.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 0xe1779dc92a5d36c5b14119d1cab7b2b9f0055de23deee976f47e9bc6d27015bf. 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/USE7D2200191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725649d4d0de5c0820314fa39aafeb548205e65d9375d39ea495282faea21920. 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/QZNWW2104312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ba56a30f7b449b73c685e4c3c08f0738f3f053272fda084b3a2c00e7d1f530. 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/QZNWV2193543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a88b53a4c515484d9b2be0103bf0b180375fe130fc826859792803956b7fcdd. 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/QZNWV2193546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305744b43ce4e79da181e60f95139534efbea8155884a09f788579234497332a. 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/QZNWV2193548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6e4851f0207e4b03038b88e5ca3270760c96314acebe137671a78d03294eff. 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/USE7D2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2038c989bf4e1e0c04d27040c38d7dd3559d0b06932233497479aa43455207. 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/USE7D2200232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a380ca84e4d6dfea96a72cecfbf15971af48234269a7378feb76ca2c014c7d. 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/USE7D2200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919f0c001ad7fdd63521013256e75a08bd54b64c736e4c3f48cd4c1e90430a28. 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/USE7D2200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d8a1be5ca55cddd97ed0efc5ffddfede3697625e587ac176284ed5ece6125e. 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/USE7D2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ee1c2e7f2317d697ecd5bd54807ebd0e5db79fac8bca248cc916239182582c. 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/USE7D2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d2f2be5c3670969caab7ecc0feb56ea414898fed27f6a6bd0f61aa7cb50d91. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHN82158108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d73b2b6bda6b0607d365267c5e8dc4b7ecac938f79bb381cdcbd7696b04316d. 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/QZES62078908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d266814b24a7095e1e2144aa081842afcfb3ba29a317c134212ec13df2d9f8f. 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/QZES62078909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d877d28db384053061ee949a679526f43be5f51d658c43a136c13f0e40f363. 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/QZK6P2060048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9067aa03f72ecc8360e6fdbc7f70baffcd8b29a898f9f4cbdb38cfd6fd0bc19f. 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/QZHNB2036226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c672ee50807af19fb5783c266b9cf5b54196c518141f80749b31480cccad30. 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/QZHN52099604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09ea634efd3fe3c0d307cc9c6fb6b6bb6a63028131503be9eab8d7a2ac6d8b4. 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/USE7D2200255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba1f7838c83904039b507e8e7cf13f11347512dbd76020f896a9fba0b1ecbb5. 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/QZFYW2196260.