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 0xeb051a13b499a3ca1d3c32bc25c6017187b0f1bb0b9e6365630ca7d29e911a21. 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/8a757654-eedd-4555-8b6f-8413b772f01a.json and https://artists.proofprofile.net/proofs/artist/8a757654-eedd-4555-8b6f-8413b772f01a.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 0xeb836ef2511f35688b81e816c95f42a01c7efa5d0c27ba80b3e91d23b1992230. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US3GD4512897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c69b2ad1e8f3ccd07edf35cacb6aa7796ed1d53d14e486fe9816b39ff709bca. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/US3GD4513337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1616d0298b885fcf0c1526bf6bbe5bfc2bef65982d235a8e77322d2f1b44351f. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/US3GD4514199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85445e45c5e76adf958d06cd93533ebf6ee9a8779e91fa09c3cb1b5063e405e6. 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/US3GD4514419.
Absolute Force (feat. Snoop Dogg, Gucci Mane, Juicy J, Big Daddy Kane)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee3dea3bd0e895859d4788c20a9d7c7a45d627f852766f9377e078895b3576f. 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/CACWV2594900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6a97911cd0fb793893f7ceae41f150ccba9545d7bac5ecc3b9e69252674140. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/CAENV2512993.
Right On Time (feat. Wiz Khalifa, Gucci Mane, Pronto, BCeline)
Against All Odds (feat. Various Artists)
Going Through Time with Friends (feat. Various Artists)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977a8f3a5dadd24dbb9a481d4e600cf7237dca9779f8e63dcdcead7604150488. 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/CAENV2558056.
Going Through Time AGAIN - feat. Dizzy Wright
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30751284f3a2c737b865012339add797a71c09ec7be830e2ee499ee582a76794. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/CAENV2558057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf763869e7e4285b362aec56dd89a8d153d5b8b9773ee3614993c1fafb4cfd9ca. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QT3F22564966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153172234ff73ba1f123d2b68985d5835bcc4e4ca78be2ecba83788585b57b25. 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/US3GD4512746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca009ca89a101642590b1f7966013c3cc45bcb7d64eda0172cecdd3c28a1fa1. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/US3GD4508436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff871a00f298faa12918fdf90f40c96ed4e542738b48fc6ebb168ae13152fd4. 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/QZXLZ2520763.