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 0xedffe9f3961cb91bdc2b637297c78cd8fef8cea129759d0abf740ceed0da6702. 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/5b01bee0-d01c-44f7-8eb8-8ba8c85e871a.json and https://artists.proofprofile.net/proofs/artist/5b01bee0-d01c-44f7-8eb8-8ba8c85e871a.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2382ed31784dbafeeb940e9b6930158ac4dac8ba58abf6f0733890ca26e7afd. 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/USSM16800963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe93071c4a5ee419051010b7610e2ffd552b6c962dde43f5cb428d5d567c7b4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM16301099.
A Boy Named Sue - Live at San Quentin State Prison, San Quentin, CA - February 1969
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48aa3b51aa6edfd953fb5cff87b70f93510742db223f1eb804214a89f1a4fea7. 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/USSM16900746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3143b8a01791c9a93eddf023c78cd2c457ea700f701e69982d56075fea87d7b1. 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/USSM17100394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51b14a3e3450c67b6a91787554e653e54e8da1d736b159b89f84cdc534c7eb0. 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/USSM18400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f9d6cc46762606e553232dfbe26def9292074c6b49fc31d179281a5f7133a4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USDJ20200650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12c58511a7fb1e69afdd3debcf0b780d779771d774a572bda55188849c03887. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USSM11201688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cadb68c4b947711e3324a2e34410bfaf7b3e0561211efb156126d6ad3de448. 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/USSM19400828.
Johnny Cash Sings The Ballads Of The True West
With His Hot And Blue Guitar (Sun Records 70th / Remastered 2022)
FIP, Vol. 3 : La playlist qui rythme votre vie (La sélection musicale de FIP)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e5528083a4fadbe929ef2506d1e11d9d69c034e32dd19db0ca4ba9b6f2140c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM11201905.
Country Music - A Film by Ken Burns (The Soundtrack) [Deluxe]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0769e8750e5ba436610715bbdfd014d37754dc4af89b13858265db9607e9de61. 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/USSM19917137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b03682295c5acaafa57ddf480b074336531036ac5cd101acedb68c7e53b140. 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/USSM16301296.
No Depression: What It Sounds Like, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d05dc3bf2fbf5fd150151eaded8ebe93fc4d938ebe7ac5bc6122d37474b02a. 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/USDMG0415301.
Livin', Lovin', Losin' - Songs Of The Louvin Brothers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e56bf29053b704f0004582fc2ce6718373bc9edcc0c5ca2b3679e9a0a9b64b7. 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/USUS70300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cfaab4326ac3eff0b9b5ae8fe100678f336b5282f2ab444988a896b82a59b5. 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/USSE60070039.
Sheryl: Music From The Feature Documentary
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ced386e732d07208afa2e8fd15464857d3175bf3eee8f23a9d85837515d14aa. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/USLXJ1943000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97f7957af92f63a2c034aea14f69d1ba9581eb3a494b07b8ce81719f94631bd. 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/USSM15800554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b575d7ca3044ffc58d448e7509eba9533f8b7ab5e2366b3919a60d2c3ff58f. 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/GBAWA0513428.