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 0x823e78d6f0505f2eafa9181c4cd4227c974643de03428049e9438d86ee0d25a9. 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/8d47385a-5ca6-4d95-9353-a49548410a38.json and https://artists.proofprofile.net/proofs/artist/8d47385a-5ca6-4d95-9353-a49548410a38.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 0x6511da91a002d92f5cccfbe686e8b6f8a8643c2e9e843f300c697b1059b16636. 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/USVG28808812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e69e6b64c19280e01e4ed5e8e7dc2e98cb6b438b504576698455cc27a4caa2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USVG28806336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738f6c8d7043a4d00af014bd8d2efc3588836ecc20f6a8b592adcabd20d66acf. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:02:25Z), 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/USVG28850270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd07f2f1d6c9b92edbd6b73c3c902063affccc71d9abd704248557ba4d9c7586. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USA560522180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0799abb4b775bc9cb0e66b8e7d976c8704a9ac2bd6192cbed5e822ab62cd5a. 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/USA560522182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2119d2e116c7910714ca619097383d770aa74774ace91e8eea90df95ee5f2a7b. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/USA560522184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b1b5051f4216a342be9aa63062479cb63387036e4661f573b54b37f6b59260. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USFF28125201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a626f7657df6f809d9fa27a8ee925e8e0513439f677b3d0fc9eb841604d82f8. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:23:32Z), 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/USFF28125204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14df536eb57bd199390b1fceca08daa4bbc7335497aa89cb769958247a4e822e. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/USFF28125205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35499bd73de5c108c7ec5e4fe57818415fd542049d86edab117c600fa68e055f. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USFF28125211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbc97f2a21736e4bc1330009828d4753953a9fd8c23e67b2c4eac0eb21c7e48. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:35:40Z), 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/USSH59285540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c38e4708689105d8025c1547225718108d196ca3d4156449d1e3b2c33841b3. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/USSH59243390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032f9a81e18d18a8a0d681cce2eb92f44c4f3d6fe1e5f023cee8f505ad346bb8. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/USSH59241563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a4184eea4626a4f4d0bd450ac5fbd6e66d7f798331d87fb36bdb0ae793d06a. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:44:54Z), 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/USSH59243393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd12273ea35a49dc86eca853ee674a61cb1b35bc8805eba8787278351017dce3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USA560568819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22f3be9fb90f37e9a36ab50dfa2745219264871162903f97bf2575ee674b1f5. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:38:34Z), 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/USA560568820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e27b76d24120aa9a4dcd40352a635a0242854135891589d6135afbaec08ce0. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USA560568822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8805d28b1e95d08fdd081c5f4cb2368e5e7092929268e510d898bacef93c86. 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/USA560568823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18300372fed4b4fbf90349874566e6bf5d7a81e888e5f8f98bb967d54411df2a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USA560568824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76b29cc888c56a6eb564d1981d454fefde70104fc6f88beaddcc3c4ffe25e89. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USA560568825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2de6ea91c2c579679089b009f2f7494aa019dcd4269357106e91aa97bbc1619. 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/USFF28535207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81580dce2e89711fcf24200d2dec9d06d85c6040b776fc54d00d382f4edf38f6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USFF28535201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62992ea5a4e323e3da9e58e0887cf77539c4a004ae1f9bf0a0c13f3b3c2c5d4f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USFF28330102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c30c62e7522441accfac24b6840d8546dec567195b93d13a71eef3708274e0. 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/USSH58441003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60668c756a9c72cfe243bbc9e8cd029a7c582eadce1f46a77417511bebf3ea3. 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/USSH58440995.
Bear's Sonic Journals: Never the Same Way Once (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85965c5743d2fff014d9aefdba9e3697f54a87cc81c36f788bb39e53ccdc437. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZ5RT1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62c65fd872d5e77a200e577e98794ab0fa716946991c9b336376da2bc4ee889. 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/QZMP62030015.
Classic Mountain Songs from Smithsonian Folkways
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60ed688bd3ff345868fa9c7f416662438c71f6aa45b354f47df3657d5ccd4bd. 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/USSF10209407.