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 0x43e708494cba6420aec749c532e5b21e1d872016751a0a8b17059181eccf40bf. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f6ccbac1-aa80-4197-bfe5-abcfa63fced8.json and https://artists.proofprofile.net/proofs/artist/f6ccbac1-aa80-4197-bfe5-abcfa63fced8.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 0x03ef65d04021649b9df1476f703ff0d7ead9e447a09b639921e52f1ab858e192. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:43:01Z), 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/USHM90877365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895385cdaee32b649171aac89d1b86b7c80344ef733bc39b521b8538f92d54f7. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/USCGH0932501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac6615acb6f815710f54d765319aab35e6297574820e21c40e7cf1f042a3872. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/USCGH0932506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2420ceeb97ce267738b592458734400a7fd9473d71e2b89783b5fa901912d82e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USCGH0932507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1791b0fe93bc00a213cdbbc746beaeaa9b41d69290846564be4752b68dab1e12. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:59:59Z), 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/USCGH0932510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa731ef7dde5349a6436971d31e6897534fd1db2f7b6e87f4e432bcb992fc0528. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USHM21198784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1070f9625368d5534d18c1673eef5736711de6ec7330cf4f7c8558f5624e4b. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/USHM21198785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b8138e5614a820988bd5269fdf7405f77568249f50820ad638a6999efd1234. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:00:58Z), 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/USHM21198786.
Sacrifice With Shouts of Joy (A Meditative On Psalm 27)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45cbff358a6189b619fef5ab2160786504b02c04295899ab422c94e29705b26. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/USX9P1427166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63049d17ec5f572bedda4e3f19d205977fb8b4b6e5e25cd7760e40274870fd40. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:50:00Z), 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/USX9P1427169.