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 0x5d34a46b6b7108fc71ab6f9013d61ae4b2284dac36a10df7e6afc3d71255525d. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d17c75eb-4524-450d-9622-675fcf5ea666.json and https://artists.proofprofile.net/proofs/artist/d17c75eb-4524-450d-9622-675fcf5ea666.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 0x911363bec8b42ca09f12e3c283df4fc54e7889148d27e430331fb5afb79102e9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USCGH1352539.
When Restless in My Bed I Lie (1835) [Emma's Lullaby]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0b8251c4d62a96dde1ca53da0af30c3876dcb88688da9c91bdff2984c31129. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:52:58Z), 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/USCGH1352541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a681af05e95ddbdaf2ad7e811d9e2307805dba05adf246250df44c764d1991. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:39:41Z), 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/USCGH1352552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf224e6d15dc4654774a24030b91a28ab21650662fe4efae396e4bd73a9ef3cc9. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USCGH1352555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba550a7d68175dd712357e0eff969690229bd25890fc79e90330fcc9b1a0cbb. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:32:35Z), 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/USCGH1350889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2ff2e848efbc23fcbf87339d692661a8cedb41141c82d36b890db0b45f5466. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:38:10Z), 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/USCGH1350890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e5468c5b0730447b357ce9103e165b730483af76e48dabb4da10c6cf9dd0ac. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USCGH1350891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df4adffd8a4194c5bcd9ad3ae4c989851b99eb59cf2f3674f62c9de4af11f01. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USCGH1350894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b4b8019f2dfe4a77b7c111366755bd0a10e0722e92e61d030af63112d5121c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USCGH1350895.
How Great the Wisdom and the Love; Jesus Once of Humble Birth
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22ff50e9d72f88d1909589a247c30692440aef8ebd9ef38c074c44e77933ca2. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/USHM91228164.