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 0xd3e602dbe31ef2e374dd7e4343c182192bdcf31ef7bebbe9ec83693b6b5f1dc3. 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/e80ed44b-a7e8-4f7e-82b3-adc71450be5a.json and https://artists.proofprofile.net/proofs/artist/e80ed44b-a7e8-4f7e-82b3-adc71450be5a.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 0x0b30b0786e21b3a424e61c407a444f4a56bf678eb1ba08e100019cdc9cb9737f. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:48:24Z), 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/USRN11500681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014e60a733f6aaf6cddb1e66b154d162daf14188274257c3a357b27f1bfc709a. 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/USRN11500685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aed7744a2a5206ec1649b2a0e87f195715e3117fc573fc672da83555cfa6097. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/USWB10701738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba408015621f29b6a0b4b9936d3c4f6ae36783de5d63f828d8adae0d51b08736. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USWB10701740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060b96285069f5df7a203b8cda8a5c418a694c74e778a5c6ae33081a8a113cbe. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USWB10701741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31fac121b7fff6d3e17efdb20a731705c0f8af7a16985c991557a54ddd1db22. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USWB10701745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731ed6b1de878620a2b59f61c637eff2c2a62781e991ae9027fe4dd14d593cc7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR6V81996056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb66c023fab05303682559c4ce13ec9a79747a0acb67d1555c078605849b0dc0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR6V81996057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f938c2819196ad491551f10a4eaad71cc3328d6d239372c8f4675c7d8b0f57. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/FR6V81996059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23825fc216871a2702b2b42da687b0598758aced04ff54aa4f478ee085498925. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/FR6V81996061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2ecf329d302ecf40386bbdd1de45f7648884c294d6cdb41459ab6cb2066885. 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/FR6V81996064.
The Anita Kerr Singers Reflect On The Hits Of Burt Bacharach And Hal David
Anita Kerr's Christmas Story (The Angel in the Faded Blue Jeans)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dcd5e9b2a528e63fba3897542fee67f0862f23f4d9f5e40fae660e74ec11805. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/FR6V82007652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa853e1f63c8cf0df4c958d4ef0c8b3e1c4efe37df341e402ccdc6f750d65b46f. 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/FR6V81953974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b9cb0a69c589b865cb061fd6cba1393f46139749c72abf4dc12d9adf5a0234. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR6V81970884.
On This Holy Night/Christmas with Chet Atkins
Two of a Kind: Brenda Lee & Anita Kerr Singers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7e3681d1137371cd72483bdd85af5590c0369356924a57dc432371d26980ed. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USWB11202025.