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 0x64727f2f2e159c69ce8301e9ae76c6de625f77ce1405f28244886f4054251953. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ff4d600-098c-4285-8196-4c83f6f94875.json and https://artists.proofprofile.net/proofs/artist/4ff4d600-098c-4285-8196-4c83f6f94875.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 0x7da578ce15945966490ad594e2e766773eae176c703c0dc415eb4bc250d046c5. 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/USA2P2012269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d88030073e1eadf34dae1c1b982550289284e52a31e924eb84ab40452ba374. 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/QZS7J2390065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28cc96f5b0839ff778013f4cdc535aabc83cfedff9e34a32bc92424389f57dea. 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/QMGR31982344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a3198dcc2a04d025dcb93a41d5d0b30ae351d1bb83d0e1578301f618dded97. 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/QMRSZ1801686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cc1ab961c53bf7f92e0b5f22c36b71a69f6a33de9507c6c6f8a5df4807e95f. 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/QMRSZ1800284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c790c746e57be8cec79ed405efaaa79f9a9f59e495b048a92434b7111c75bc. 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/QM24S1808818.
What You Like (feat. Ty Dolla $ign & Wiz Khalifa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c19e796154801e22c3cc67c6b8d715b5f9bc254ca261b413cdab0e1d2a344cd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM4HH1710007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ad1150eddc874c935fe0130d552c81f5d1b797f287cc4a972138e2db831060. 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/QM4HH1750022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd163bc9943396e4cac02a2c264cfc54c70ab45450678be7676d1de7fcf1dd1c. 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/QZL382401747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c66d5ace266385300e17834483d6b0af9630403578d0016561911c66f7c72a0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUS11700410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a99e91cc19c2dfe3cdc0a774e17229f32f7fc43196491c0eb081dc2ebc395c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USAT21704716.
Don't Sleep on Me (feat. Future & 24hrs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318d0e8d31fe23a9fa5c3b0f97dcac278075b319d7c5da138184c5ebd407ced6. 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/USAT21703929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91402d498da211899d3c0374dd062629c97eba2e4e7edbb10336eb7b9271b23. 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/QMTND1101529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b96e463bb3b6874d80f662565d2bc260a10831c706f67e1044842b56c99ef0b. 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/TCADC1769409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812332bfe621f64825b6ceaac7ec0acc82aa463e84f75de9776b3dd9a221cf68. 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/USAT21602441.