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 0xd09d4ce9f9df42f9f77f15effa275ef8e5a527875da8726d4b47617ccb69e265. 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/02a9abfd-83a7-4a02-9938-da7117135846.json and https://artists.proofprofile.net/proofs/artist/02a9abfd-83a7-4a02-9938-da7117135846.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 0xcc8ecd7a4ca981e3df20a1da3403d04b1020845c38da45e53573addf61d0152d. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/TCAAX1115874.
Because We Believe (The Voice Performance)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7ffba434be4b47b949515036415efa8542f8415d3c639179cbc960bdad8d74. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/USUM71211689.
Bridge Over Troubled Water (The Voice Performance)
Bridge Over Troubled Water - The Voice Performance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb1061965eea4b0b3a097edfaccbefd4b95d78042882b78464798e18a885650. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/USUM71203411.
The Power Of Love (The Voice Performance)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1365a06950bb01443514c996cfcdcc8a1d46540c0139e638659ed34dc8dcb17. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/USUM71204854.
Home For Christmas, The Chris Mann Christmas Special
Chris Mann In Concert: A Mann For All Seasons (Live from Sony Picture Studios/2012)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ce4837bc46c93c8a6a89cf3e8ba013c297c0f4942611373382f75f3568412c. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T13:39:11Z), 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/TCACG1584390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441b84fcfbca53ee3766fe0c9132c1bb0744580a3f26e3846e598a417ce94194. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCACM1672497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe915a5b2b45b7063d83f9f3a81c076f0e60d1aa2eb441910bd928650df8529. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/TCACM1672501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771a226432c29aada6160a4c39aaa8368d1a74b45753748489ac860d88df8ecf. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/TCACM1672510.
All I Ask / When We Were Young / Water Under The Bridge / Hello (Medley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8195acf294fb747ac1f80ed11d65ac0a3086437dd346fcb693cf266170572e58. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCADJ1733445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c2e5461a1fe2f08d84eb502061f122dad4f8219bcae25c5f6376412b27ae88. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/TCADJ1733448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b43930ae2d61f3486a7026032e8614b916253eb3e0c36bb759f9db8083920a8. Chain 2 (Bitcoin): anchored in block 957826 (2026-07-13T08:56:09Z), 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/QM4MA1900065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e70687ab26821b00f2b1b94375b4147f1a2d4b39fb81fb9f7f9205df561b93. 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/GBWUL2057657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120763e2b9c695daa0c357cf268a597e528caa66cdad270dc42fa7f6498ddaac. 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/USLZJ2097340.
Election Senior Showdown (Beyonce Texas Hold Em Parody)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48ba73e1d00653b230abd5204522fbb6a4bab5c96b076e5f5ea0506dbf431f2. 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/USUM71204864.
Always On My Mind - En Vivo Desde Auditorio Nacional / 2013
Drama Queen En Vivo (En Vivo Desde Auditorio Nacional/ 2013)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931591b5e0871a0820f009f1c6c0dffc033b76adc14df719033dffd422c6a83b. 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/MXUM71300936.
Out of Our Heads: The Music of Kooman & Dimond (Original Cast Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe580831888e602036917c7bb83aa40df72e879797bd1645dbeb950cce18fd4fd. 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/QMWU81100004.