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 0xa84101105c125396ac86ccf6bc037a1e50bc8e589dba0448db875444ba746134. 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/17a546eb-0a3b-4a5f-9981-acc63a0c61e3.json and https://artists.proofprofile.net/proofs/artist/17a546eb-0a3b-4a5f-9981-acc63a0c61e3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Make It Official: Versography Mixtape, Vol. 2
Get Some (feat. Usher, Boo & Gotti & R.O.C.)
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 0x28ed09a4fd59c334553862d85f1bf463663289983a7107b70e168aaf2db761f4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USSM10109178.
Whatever (feat. Nate Dogg, R.O.C., Tigah, Skeeter Rock, Trey Lorenz & Katrina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eea681be9f92e01951a7534e6323113973e9d2bd0ab7da02ef56a7e5a451f77. 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/USSM10109184.
Going Home with Me (feat. Keith Sweat & R.O.C.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4f37e4f05a3a9d4811fd9b58c63fbc1766af9f34e6466cd0f0e7551a2fc277. 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/USSM19801683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58767fb0b5d124cb1eaf3a35bac340a993350cb55847e4c2545e93a560fb0b84. 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/USSM19801131.
Protector's of 1472 (feat. Snoop Dogg, R.O.C. & Warren G)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5834bafa2717c1cd67a688de473e841c374e8a0912b7dc26e88fe5eaa7fb66d5. 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/USSM19801133.
Three the Hard Way (feat. Mr. Black & R.O.C.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd11be4c1d899ee9450dfb404efa0614eb40bf58b758df047803d7ac622d010. 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/USSM19801136.
Big Momma's House - Music From The Motion Picture
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8144bfa6b0a3e196925d7a6f177fac9212402c895ebbf7f139b1b259905aaf5e. 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/USSM10009106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0939e0ea5ca52805b161d3e59aba61b0401861b4a0357939c9117e9798c695. 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/US2X60700697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2519e695c43214839fd5e52d2fedc9ebe45545ab091ef1b59dd45fb005416b75. 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/CA5KR2064182.
Where the Party At (feat. Jermaine Dupri, Da Brat, R.O.C., Lil Bow Wow & Tigah) - Dupri Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e0a4e2e298412f8c909fedb5ea6751a53cc7c0693d3721d44f88b6aff3c7c6. 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/USSM10105754.
Where the Party At (feat. Jermaine Dupri, Da Brat, R.O.C., Lil Bow Wow & Tigah) - 11-01-01 Dupri Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bc104a648ba11fb639b297ac2a31666296b1593c2b3fb2232c14e49b65ebc7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USSM10105820.
Protectors of 1472 (feat. Snoop Dogg, R.O.C. & Warren G)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf89d7c9cdddc3dc9c8e13d6ac3633b35b40b181250c477f1f3fa162c7e2257d. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/USSM19801685.
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