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 0xa7279009734d45d376bc98d425d93707452db65d45a4a0fcd4d146f5b8782005. 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/41f4786b-dc9e-45a3-ba5b-eca1944d67d9.json and https://artists.proofprofile.net/proofs/artist/41f4786b-dc9e-45a3-ba5b-eca1944d67d9.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 0x384c7b63595fa8a384bb985cdbcf1840d9d7a11c8b35e1b86050015a9319b484. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAJH2506005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdda4db3932e896c2a71335ef4ef52d3e098f77b0213fad28ce35f7c2586625. 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/TCAHM2357688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c7d7e8a82351633b60402f88f5da675a3456040cbe8b64c264a89d67828d6a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAGR2271639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc7977c63d10e364097a71afc4e528d9b1f6d66506db88ae5942eec1e81bcb6. 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/FRZ042201345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37dfc1c2493e1661ca842428ba3803f83227cf700faa358b48717a3b718339c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAGK2205684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f09c0638f90a0c5bbce24a06ef632ed110561347f6269e231cbc532be832f1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAGF2274725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46407cab9aa07f78acad2c07aa25156e9fb8077913871c5254604e0081e9a7a. 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/FR8Y72200188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70469645730ebdd89ea243a42626c8cc1611e79351f18e56f3a34af982792fb. 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/TCAGB2258702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfee084abd7e639738d0a68932e5e76af7a3eb5ae4974bb0b5ac2cdc47b8ebee. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAGB2258741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5446cacd4399e2bbebc1a3c29e13d45ebc9679bfde03b5af9ef6acd33a2416. 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/TCAGB2258725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85348f3e74ede92c6b4f75a8ef518de2355468130e92081d179b0bbb40a1335a. 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/TCAFP2180012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07be163d0efefebdbd171a37a06fa4880bb5bca0e0526207fb51e22c6a3de52. 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/TCAFI2014224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2580a8c6bb407961e46cb925075b98f29eca335a4346806922c375470957235b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAFF2056984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe058355c1d68dad734a681cc66112d0743f26bf1a2a8090833d7827270062c10. 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/TCAFE2068346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cded4d2445a8971b0ff4ffa706b47490af93b368b74aa0fb67229ee253b10c. 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/TCAEW2078020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e8e565696a4f323431b9d8760bfc691dbdc0382f51c469d90979852af9267a. 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/TCAES2090431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e3141d3ec51218ecf72f6e3a6647c4d1cedf9753d4e3ee22342e533ceb005c. 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/TCAER2076201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f281c1c473d56261a13e0ec3c39df1793e672f27c876cdc6d683f13dfb1b81d. 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/TCAEJ1931617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d5d38e8057c0bdb96137084e593b0ecb44a43f755947016ba709938cc566d5. 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/TCAED1975776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22563cb15d8e28d9ee840180592c1fb570b3df04f78c1de05c046f5a55d5943. 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/FR4LW1800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf329422926363e6e5bcb1b33e727b1c46b9a1e4431539f5526d2856d98d7b642. 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/TCADP1824619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d94cd7cde0f3cce0a605f0634ff2a3229914a3fa6877c0b5b652bd952e85561. 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/FRUM71900868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38663a5db2958befe0dfa698b62caa7b1cb26770caa6cf5492a4ac0c8c76fb48. 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/FRZ042201547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc7977c63d10e364097a71afc4e528d9b1f6d66506db88ae5942eec1e81bcb6. 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/FRZ042201345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cee18628ade1983f875548d0e68cf1c3d9cadf911f2f7728b239efaed5da073. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/FRZ042201548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc0b8e33bbf18d3987afe8eb9691356b2a973d4b4f234f65a19d7923838940f. 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/FRZ042201551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904da7e01e81a32b9a8a0c54d56dae5779db9662984b9a126480c5ac633626c0. 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/FRZ042201549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b2cbae1b3c0b2e1de4886df77354643b0401c7ba10f49dd72c061c1fca19d5. 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/FRZ042200892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb66920fa6881844e7e790d962e207ff4d46e480b7323b64b77bfb4df1cc38a. 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/FRZ042201550.