Kenneth Page (January 20, 1954 – September 30, 2024) was an American actor and cabaret singer who created the part of Ken in the original Broadway production of Ain't Misbehavin' and played Old Deuter
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 0x7ddfd132066f6cb1e1a017c76c726c04a7fa7e8e2173bfa86d4f6257455e927d. 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/51d72709-7dc6-4f7d-87c4-1d03de1558ba.json and https://artists.proofprofile.net/proofs/artist/51d72709-7dc6-4f7d-87c4-1d03de1558ba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Oogie Boogie's Song - From “The Nightmare Before Christmas”
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 0x11cb3e6b2b4275a3befa0f80b96983c49c37a96adc2a905d7577272e594ca35d. 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/USWD10422991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cb3e6b2b4275a3befa0f80b96983c49c37a96adc2a905d7577272e594ca35d. 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/USWD10422991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4e344459a13c54e0330adf176c76fc130d8ad303fa9609367267175b20ceac. 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/USACW0510476.
Tap Your Troubles Away! - The Words and Music of Jerry Herman
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb262a74d38dad26fb366acb89bef879c186a5c2a6bd859132ac29da98067136d. 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/USACW0510628.
Cats (Original Broadway Cast Recording / 1983)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdc0384c3881e456c38f66ac4e241186d67813a81459395ff59dbc65ae6adf6. 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/GBF068990035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efad71b5daed16675c9dad920f54e24286cc9da0ff74349879d1bd51a4d914a. 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/GBALG0500129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30979f516c3ffb1232409a5472a19bbb0a3997f1736c73b6e4cd29482f8a5d1. 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/GBUM71704131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cb3e6b2b4275a3befa0f80b96983c49c37a96adc2a905d7577272e594ca35d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USWD10422991.
Oogie Boogie's Song - From “The Nightmare Before Christmas” / Soundtrack Version
The Jack 2 Pack (The Nightmare Before Christmas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cb3e6b2b4275a3befa0f80b96983c49c37a96adc2a905d7577272e594ca35d. 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/USWD10422991.
Anyone Can Whistle (Carnegie Hall Concert Cast Recording (1995))
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71659baa8779f304b72701a5e5fabc9be75934ae2ae06810353f67386196396. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USSM19500247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6eea11606c24f7acc45a7530e53e428d4290e494c33939ce93b2cdfbc892ea0. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USSM19500243.
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 0x8af09f429d3623a235c3f1fd6a9a6effd7ad67d9ef556ac1172951893749e0b9. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USSM19500259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16bd1b6801b525332ee2bef51fedfceee4ee42479c2d41cb540c47f46f010add. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USSM19500263.