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 0xbbb70b2c3c2c37309118827f96396fd4072a351232132f91e176dd16cb2ddd2c. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc785182-e35a-4f0b-a9c8-0afce00b2c5c.json and https://artists.proofprofile.net/proofs/artist/fc785182-e35a-4f0b-a9c8-0afce00b2c5c.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 0x2f00fbd2f154a6e35e4328403d9906b7be6b77068f2b90fe3631aaa41b3a77ae. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:39:21Z), 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/TCJPH1853807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93ab97d780e7cd7dccf454f584ac71092cc071d09541deb39b4f5286b5ab3cc. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:22:26Z), 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/TCJPH1853808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa160db8ba235b5703508b721ff22f00ad92dde03b372db583074f98ae8410002. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/TCJPH1853825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06aa493eb7a883c40014374dd4ba88d56992cd03d98fb7c1213ff73dd77505da. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:30:21Z), 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/TCJPH1853809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ff23d6b9122597b7f13eab346dce8779a6d67092c973f0b300d56cfe0fb8ea. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:37:02Z), 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/TCJPH1853810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d58bdd30dbe70f0a6dcc313257eecd3fa6202f5c9532a845b40877b2743a81. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:05:57Z), 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/TCJPH1853822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7030902d3b49cd84e9a09a0e2d375495178de0159164acd550f8495317ba62f0. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/TCJPH1853811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdd91d56a11a5f76821b8025d71638461750ceebfd2fe5f470f57cb37f7463f. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/TCJPH1853812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde89bc1c9890f467a5eb496b69efe04ef7189853e4b2fbfb8d908d79de9e6584. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCJPH1853827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d33d230da30230461e0d134aed762f59313d724911a48e5507076687f8e9a06. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCJPH1853813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5f0448ff4ddcc24581fbccee6ce786d62181b63c424a874ef66aaf4931f38a. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T08:58:50Z), 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/TCJPH1853816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2f05a688bf6cc33096d614f9a574c0eb555ce7e48ad1b07d6f92101d73ada9. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/TCJPH1853829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609df5c4def0db5f603c526379d7026912365ac6288e5f38c5df35cde1f57adc. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T15:31:44Z), 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/TCJPH1853817.
There is always light behind the clouds.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4d6636431e89440f2812446772a0dc2ac285de31e11ed683b1cc7427273eba. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPH1853832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7911371719ec217cea609a389e9b929877ad3ecc3b4bbc3e2f3885ba161b112. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCJPH1853818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0c1650d8cc59301c4d19d9c830e633ac2b8c247a73160d2b3eafb1b542983f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCJPH1853820.
When it is dark enough, you can see the stars
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a827762164b75c364609c850ec56eb693748f330f7990f0668e05b06866b37. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCJPH1853836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af9d6190b529aefaa9dad94540a294e90acf319cbddba61a225f69a4466815b. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:27:43Z), 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/TCJPH1853819.