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 0x30d4fa2ae47fdc353a1173092a9812366aa3106cdff3e6cda15e914478468b07. 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/7275dab6-b552-475b-8aab-03b55d75ffd2.json and https://artists.proofprofile.net/proofs/artist/7275dab6-b552-475b-8aab-03b55d75ffd2.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 0xb6e818ba98bfb1760a8068309e7bf42b083db96f0c731f96f3f3425a6d3e724c. 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/USSP39911630.
For The Beauty Of The Earth/Come, Ye Thankful People/Come, Christians Join To Sing
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc285acf0294a14a51b0f913afe643d12d6d6b20103c78a2870bb832227295d36. 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/USSP39911621.
Guide Me O Thou Great Jehovah/He Leadeth Me
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe463ef2db88b2ca1b5d02e5116030a8ac413b216525b079b35e5bd64b9338d6b. 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/USSP39911616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78791c04acfee7b7690974c0057c685be849aeecbc33694ff621ffb765cda8d3. 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/USSP39911612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d269406f630927cab5bc72edbb8dd75d6e8b30732b2582eedf11eb119e9cdb0. 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/USSP39911606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf535c286e8ff91d515c7e74c9d30dfd16fd4f7cbe52bfc70bbe6bbe20f74088. 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/USSP39911626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e818ba98bfb1760a8068309e7bf42b083db96f0c731f96f3f3425a6d3e724c. 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/USSP39911630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe463ef2db88b2ca1b5d02e5116030a8ac413b216525b079b35e5bd64b9338d6b. 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/USSP39911616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78791c04acfee7b7690974c0057c685be849aeecbc33694ff621ffb765cda8d3. 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/USSP39911612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d269406f630927cab5bc72edbb8dd75d6e8b30732b2582eedf11eb119e9cdb0. 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/USSP39911606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf535c286e8ff91d515c7e74c9d30dfd16fd4f7cbe52bfc70bbe6bbe20f74088. 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/USSP39911626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e818ba98bfb1760a8068309e7bf42b083db96f0c731f96f3f3425a6d3e724c. 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/USSP39911630.
For The Beauty Of The Earth / Come, Ye Thankful People, Come / Come, Christians Join To Sing
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc285acf0294a14a51b0f913afe643d12d6d6b20103c78a2870bb832227295d36. 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/USSP39911621.
Guide Me O Thou Great Jehovah / He Leadeth Me
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe463ef2db88b2ca1b5d02e5116030a8ac413b216525b079b35e5bd64b9338d6b. 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/USSP39911616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78791c04acfee7b7690974c0057c685be849aeecbc33694ff621ffb765cda8d3. 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/USSP39911612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d269406f630927cab5bc72edbb8dd75d6e8b30732b2582eedf11eb119e9cdb0. 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/USSP39911606.