1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xb695218b950e61bdcceacbc9c9898fbc10ce862c5c1c4d30f031d90dae36a86b. 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/41194e3e-7d89-443e-92c1-ffdf5c2ef347.json and https://artists.proofprofile.net/proofs/artist/41194e3e-7d89-443e-92c1-ffdf5c2ef347.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 → block OTSBitcoinBlock must exist at that height 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 0x4a3b0077f84f0370ea48a5ba7bdffcd830cc1d9c17605551291def721554fa6b. 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/PLF242414009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a45a96704d619bad40e6168249aca964ac6fbce9ad567c240306e442408c1ec. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLF241401103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee317fbaf3afe1d53bd8ca0823be869d58f43495a9339544fb4a8cdeb931a0f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PL22G2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b730c4bc04892566ccc8f360c7164d46b06984f91479fe2c983ea2db2403e3f. 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/PL22G2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee317fbaf3afe1d53bd8ca0823be869d58f43495a9339544fb4a8cdeb931a0f. 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/PL22G2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17165e69f866045e3a87017967e4e6d5ec6d7d2f937dbbad26514a464c64bbd1. 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/PL22G2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176e0b52a030483d95e03e1a550be599ade9cf1beefb6ddd5e5347e9544540f0. 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/PL22G2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3157456b33f88896f5fd6c5779ada95a3a697c6043f176b815f2bc963bc81f38. 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/PL22G2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39883b2cdb25c92c79c326e59e7b8c32fd8da6dcca91ec9288bc1790e84fe009. 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/PL22G2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41549741f731b6b848301e22fc15892afca286660b5795e8bc65b3d1e5e5ab20. 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/PL22G2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941d7f3def3c448ce1a29e0dd63073f22e51887ff6ff0ae2564488ca6eaa4b8e. 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/PL22G2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71e92e380b570a1d11233a2b45972674fd5b2b7d45db9a00f81f56fadd7e4d1. 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/PL22G2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd117012075abc2af265615da902175b7e917cad5ceba9f01160c18c2e55eb0a4. 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/PL22G2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7fa538a20c8be4ec3b5343a6e316829f3722a526d61b35e70d0bd3c3ad3e25. 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/PL22G2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb388f3c72c21930a3362912c266e992d29b818a9fe1693757bb88e13176cae. 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/PL22G2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d62f1756a918a798ffbe114b812c6ba56bd85fc61847765f0ebfd6ec38c9d7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PL22G2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24dbaaad5c356bb2006a55638beb6d14251920f416b81e3da4c321d3dfa91eee. 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/PL59G2200266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6a2b4b3e45b92e9a5778625448c9bcb2732c2b769cb4ba11160935cd3d9f9e. 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/PLI368383880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b569822fa7e2ac2f84a4d57bdd005c916c9e8397aef7b48f0ac069c96973354. 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/PLI368383890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3b200fa2d7c4b2a0ec5c7d6dbb976ee7553c3eb9994b135e3f7822ebe38668. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLI368383900.