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 0x036f908e04ea7e27f771768a89a3dadbe234615a2a0be166937523cf6c2fe36d. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4fa8698a-ec21-4bdb-bf17-f136d3002393.json and https://artists.proofprofile.net/proofs/artist/4fa8698a-ec21-4bdb-bf17-f136d3002393.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Morning Star: A Collection of Marian Hymns and Chants
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 0x04cd70e04ce8e164720d5ff76b8df4f6f4aa5bbae0712c16f3715e406f16934f. 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/USHM81523316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdde170ee61d916afca0c4d00e195adfe291ea5f934af5670b8fbb15fcc71be8. 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/USHM81523319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e4bc902d7af94f45512ae2add280400c578368004622d1ef1930654069cd9f. 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/USHM81523325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66b96831bf9d111886a390e0bd92eb9b5112766738ced7b3f7e29fd865f266f. 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/USHM81523326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e72182c152f1355252feaa61f8895e96a8168463ed8e3aa65ad6767bf5de54. 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/USHM81523327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43f686c354935082270e4ed4160cb6d9931da6e6a98a42df7eca5d2b99e4bd7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM81523328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe251ca2fbfdb24fd1243daef294a5f08d658114634e5dc770753580b4971e4bc. 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/USHM81523329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7326802a66d84f1880a6f29dbd992defebf7bdea8ad0d86fb00b73a09b7abe3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM81523331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3f7a9b2fdda99a5c73f44df020bb9e16023cb4f13d68f7c2936ee3bfe5398e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM81523333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3545ef185d50b54fe26698e2c9b3035450f31d14df466649958d8629dd8daed5. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USHM81523317.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e78aaaaaeb3ae9991433a359f7914561ababa78fccd5d4c72f1e62d44725b5. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USHM81523318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8d08c1fd853c05379e84bb835db981888c061eed10fb6e754c8e09cdd8bdf4. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USHM81523320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71022158f662d5b6a1efed9225a9d193fd1b6227fd0f3710b27f60a3f483d252. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USHM81523321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096a649fda1d05ecfff307fe982f7635b71de1ff62513df3bb6fd50a9397ee10. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USHM81523322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543daccb0c9d73f66590290674a86265f18fb30801fe3ae28c434b87f8063c07. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USHM81523323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042d52fa616f62142a9fc0df11d736973b72f2f7d8cb6083b555049585bd18b0. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USHM81523324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226a551a1c5a8ca251abeedcc75929b9373d7ae097e9d960cd991e2bbcef46ee. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USHM81523330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2626466987f902acd1f95d6b21fa8f26e8b2f7eb3e46c6c58126ac42f96c80bc. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/USHM81523332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9ad1a0c0122ed3b27820d5c1157199065837b631789945fea7c4970af7d088. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USHM81523334.
A Collection of Christmas Hymns & Chants
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25acbbc8f740b6e3df6f4a8a9a7ed078de180e60a7235c79f837a24f3b9bef9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USCGH1919779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5a38e0d50ff7a80b480685a7d649d44049f41cc55cc53d993900b72c236ff3. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USCGH1919782.