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 0x9d31a8ab7431f34ab9d44d958ec4908856a24803ca1baef1ec051a99473576a4. 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/dde5ce8d-49e2-4e35-8d18-f5cf76712c14.json and https://artists.proofprofile.net/proofs/artist/dde5ce8d-49e2-4e35-8d18-f5cf76712c14.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 0x8cb6fd3f655bedf8431fbc1d713daf255f7ee849ac9c6caf17b29d30bc739dbc. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USG4X1300506.
The Gun, the Gold and the Girl Cross the Brazos at Waco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12556b7b02adfef4cd80861c6bdd39fc4cdcfed27f3ecbd15b1f59ecf33e25cb. 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/USG4X1500411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0c3fe63a37b17b43ea2337a31f18057bfddf8bfdc55aa69695d948c9525e89. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USG4X1500413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ebd7425b95c607e1edde081d8602da9920e405657d0575316cb74d00fe8814. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USG4X1500415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55792f6a8cca654d8559e2664d9a7bc202b7e141a96558d198c0f4828a317faa. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USG4X1500417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac098406eb797efa7ba07c9f1e4a02303e89ff7bc777cd488bfdfbc7dc6f366. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:05:41Z), 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/USG4X1500419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2a87750a1978a446a0d92c2471d5b4f5274e039e72258a2703714737e9b8c7. 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/USG4X1500429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31bdfa4760eccb71d9366ffb3a2495702ce261fa30e3c071d79c62f1cb7b6a41. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:33:04Z), 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/USSM11903589.
Billy Walker: Stars of the Grand Ole Opry
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3964971e351c97b54494254c6739180a30ac66aa5c3d880699218265d27dc846. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:16:23Z), 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/USACU0504651.
The Storm Within My Heart - Single Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8e2d4359591ad9c87196934d79d6d2acf93064799d0ca17f2c33d5c411de49. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:52:50Z), 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/USSM15901558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cce14ebaddd17d2a855dd455eeb42cdc8e6c49be05247531059c875a402aafe. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:29:03Z), 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/USSM16001805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82948c41521b630bc133dac91a9877bf2d3db4d5b5085f9c6829a2631fe1f622. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USSM16501555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d185595d27010c810ffeba58fcece1df16d91ca6a8965dab74e59e169336c04. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USACU0505520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f8da581e3130928ba4bbef23823325d34b5b6c41b868423f375df505a6a2d1. 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/USA371129311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be1d09ee103d9611f79bb49d15ca6c26cacbc74a4179b1c5df64fe1478aeede. 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/USA371129314.
Charlie's Shoes: The Very Best of Billy Walker
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fe85e9b8820bccc78f8f47e3c2a5d06741d1dea08940117db5a92b9374d9a4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEXN82089372.
Top 90 Classics - The Very Best of Billy Walker
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf444c891bb549446a02acf725fba3733356709eb1402aaf1f96dad8e3044a8e. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:47:47Z), 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/AUXN22112645.
The Tall Texan: Selected Singles 1949-62
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59c3bb3e2ea1702567bb45041e3a98360492bdf09eadb61e956cbb59d4674da. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZYJQ2000324.
The Devil All The Time (Music From The Netflix Film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc59dbb2b163122edc36cfc70171ac7c729a88966d4e688fda18742423caf00. 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/USSM16101510.
Columbia Country Classics Volume 3: Americana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a8032675a3c52a70106a6c648742b361dfb47e8a19a4889da944a96dff197a. 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/USSM16401229.
Country's Greatest Hits of the 60's - Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc986d7ff51444639f6d9164f886dd7f7b699eeb37c783597d49e53fd6c60d255. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/USDEI7902271.
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
Columbia Country Classics - Volume 4: The Nashville Sound
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2d8356fe1dfb2e2efeaad3f3ac840a25da47085a8831fb4d4d617e42b5df85. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/USSM16101511.