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 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 0x258ec836d572b80d3b2f973a6de28e3097114a4b4114d96440fc3ca706854c4d. 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/5c286b74-08b3-401f-8201-32355975775c.json and https://artists.proofprofile.net/proofs/artist/5c286b74-08b3-401f-8201-32355975775c.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 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 0xb8d054bee194dbfaddade52deb1a36e70d0afacbb0c3d811b42c3b73abbf68f1. 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/US4YK0930734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffca1182ec3c1b113592bb2663c8517a01fe2523596b7ebaf67e0fbc2594aad7. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USHM21390468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c148ce6d9833a03a99889c7a151f27e14a08e3b43a51a40422163573c42f1c2. 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/USHM21390469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187b7d528cdaf0c2ac38214adab185d8b0fe1c6cf7f0eabdd7984eb7ef8c2fec. 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/USHM21390470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403bb5b4415d709387490348e0a8d076395d1664aad11b4f759e107dd3374848. 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/USHM21390471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d1123ed690f0739e7d2c369554ee6318f6b84d372197f05b003f5fcc980ebe. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USHM21390472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d2a0e860b103c83c0b76bbd125318da6fe8678c0f9cbe9ecea28e69494d564. 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/USHM21390473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef2e4b6ab42f5be7002b41ddc7c314b4dafec190e813842142aa86629405a59. 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/USHM21390474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b57526765b53e562c6f487eb2d2c8fea90a7aa26af772d5c73a3b97e52e1e9. 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/USHM21390475.
I Need Your Glory (feat. William Murphy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762af41b0619df006d385a12718a44570eaaec9c7dfd6985ca0e2e0beaf3a967. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/USHM21390476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b684df70909be07bad24f356b0ef2fa9bf6db896ba442f61810150a9a97d083. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USHM21390477.
I Believe (feat. Shawn McLemore & Zacardi Cortez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5adaf0cabb4c8ad49b2a390a41a7a07643b5afd24ab45ab0d3696192dbcecbd0. 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/USHM21390478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4740e849225cc03e0eba35a605dd58e30f0c5bfc529a116da9ba1dc61828b5. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/US5ED1300182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3e475691afe7b0a250182c688bf04b0ed704e5ac93ff79ff92a0f1dfdbcffc. 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/US5ED1100119.