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 0x49d3f5fb54ae0aff62dc895fe3b92ba8ad700004255c2f0aa52668363f9722af. 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/4f1577ee-ecc5-4a77-852f-f39eee429202.json and https://artists.proofprofile.net/proofs/artist/4f1577ee-ecc5-4a77-852f-f39eee429202.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 0x80d35a519f9145e203e88cb25309acc5e2e0f150d58fd6eae3b067e7ce9aa779. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:40:54Z), 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/USTJ20302401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390f8d08a97f6becb47a2dd169014cd65783885e011b1391cb415cad10b1106e. 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/USTJ20302402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4915c196b34fff2a3c3fa06797c52288f768d2c1a1c0ea8093bd7b3d4adfb673. 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/USTJ20302404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7843ebdcbc7f328c6dffb97376634f9ef0f2570320899da3ee2289e7931c8d6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USTJ20302406.
A Single Ray of Light on an Otherwise Cloudy Day
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e685aff744468b8088d83130c156b5d26077d310d93365ad262f68e80062943. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USTJ20302407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98953f17b6437636ad96e3e3bf27038a4f1fde8f9ec6d72cc5ecf6855c66f7a3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USTJ20302408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ccb7904d6f36e835c7c934dd8ecc217b71d1a4e496714ce7c75078f3e895639. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USTJ20302410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efa7533be12ad866f0e8037256e9289d886e522cdc3ae5d07ca4190377606a4. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USTJ20303802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9337d664f85775b4c29cf9bbe1a3f18b49b4c2c3dcb041d165de3f33750c146. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/USTJ20303803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ee81a37ddb2319882ee6bf7aea6ce34f008eeec058f64b4312eb402e443065. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:07:53Z), 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/USTJ20303804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31acf6916ba7f5ec97b2ec1a71d5ef2a053364c9af5e318d668ecdaedf1bea32. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USTJ20306202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6995579be965f458aed98510a9d5f04c65760cacf2402e571350c5a37965ca8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USTJ20306203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bacc63c76165f04fbdc044260ce283ceadaf335840bed334c092274878d534e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USTJ20308702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7eaa65e29ecf975be1bd3b180919edc7e11bcec1f97354f8a7db79088c57870. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/USTJ20308711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bd14da0c4c9b5ff2d92fafe0bfc77ddaa2fce36acba468135bb6684afd2325. 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/USTJ30718201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7691e7c62f4545274a36bd35db4459b317ea50f4271bc9cf80a3be3f317bee. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/USTJ30718207.
What Day Is It Tonight? (Trans Am Live 1993-2008)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6e2671cef15d1e089e89becaf5259e5bead4712d29e78f5fab3ec892ab0fc5. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/USTJ21743701.