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 0x5f6e146598c490342180ef400e52322f7c2465cf3475f6732321302fc18eff08. 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/0f4934d8-13d0-485b-acee-d27920e2a538.json and https://artists.proofprofile.net/proofs/artist/0f4934d8-13d0-485b-acee-d27920e2a538.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jazz Elite: Best Of Paul Desmond Quartet (Live)
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 0x8fd59e7044935186ac8c896979e0e15e8a557434a2361b6d4e90d75502b6f884. 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/UK8D41400869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8aad28c69857bf5bcab541a25ec0793e93e1d0f913e7ef0dd94dac793de29a. 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/UK8D41410821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3391cf55f55c84ecce869f35fe52f980382ee98c5ff164292d0633ed1c560636. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/UK8D41400866.
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
Paul Desmond Quartet Featuring Don Elliott
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d045c90e9c95949d77983bd2d9430a5f1a6ace36dcfdaa8bb708a81f97defc. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/GBLGL1228835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f509564753c7a4e189d7b7ca5d816c210e2d2f0990d84dccb1c1bf289320ea. 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/GBLGL1228836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf451f1dc8711600a606b94841d248780b32994bbb7be980ab3920f7653d2a436. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/GBLGL1228834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f34d32610e51fb805737e0eb50a4fe8bf652b6d536724f1656592ab85f7988. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/GBLGL1228837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf157eae8d5a4e2f97404434a59dd1cf204281b0e33bb8b57d8ab7e04d77bffe. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/GBLGL1228838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1624dd6b47994bde934949e51ff0ea9dbe99353dc899237ab207dbe4968da1e1. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/GBLGL1228839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0c4a8445fe4c54e6ce5fd0d7096210482a8cf810b53a4258c6ee7bc0a482fd. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/GBLGL1228840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21cc51904415f169b052bd08da4a5aa8f063df3abee879a56986a277074c4a11. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/GBLGL1228841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5bc139086e63f4c7e5dac5f24747c3bddbc24320d86f08b39b4c2718e5908c. 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/BEDO61517381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b732c88099cfc1559ea00c5409e73ecb7bbad5bc2606a8212bc9fa820eb672f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BEDO61517383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7e6873d3e686fcba0408fbe6b064ca833e40ccd17476ac000c2a583f3c3352. 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/BEDO61517385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf08215e5d72c8f8b31f8b3143ceacc7a855f55cd59ab9cbbc9bc061bc128a54. 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/BEDO61517387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ba9611e53dd9070ea44fe977b218d2455d177a83bfa8cee4641f71310c4d49. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/BEDO61517380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d5d3e1d46a87889dce5cf70d4624bb27b6c8790f1d82ccdaa4e45dc3f3f680. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BEDO61517382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf69ce260a28fe4327546ff58caafa792249cfad880a789fc01e383267d44f1c. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BEDO61517384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ad386def33ad61bb1b970c6461137f79f965e73394d3d46c52d0b404ccc3a7. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/BEDO61517386.
Gerry Mulligan - Paul Desmond Quartet / Blues In Time (Expanded Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1693d9393f26d97b5d5841ede9f6e2fdaf7a4079bd227e7bc987ac6313797dc. 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/USPR35712057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704bc0295234047230ca63b1fc7fc00636d8b23771e5215a6729683f56550c1b. 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/USWWW0200713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31facf0e5b9a17ac25ca854c63c010cebda03ed6f715daf261993ca20d4d4884. 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/USUM70504203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6928999b0093e0e1ce90ba5180155697451c6d508b09d618ae355c34d46fb7. 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/USWWW0200711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d87a469bb85ebe4f1fa81dd74bb958bb0b4857bcfd1ac4612d90b187f6b42dc. 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/USWWW0200714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426901490ee856780dfe7ecf88ebcc2ced41c78205664570354fa3558405a2a5. 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/USWWW0200715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75eebbeb9adddfc7c98361a4e58da681727341b70fd11b299d6d48c55c09700d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USGR10000920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7615efdabc7e6e1ac361bb5da880277d219cb56108bb8fa6d5a3f8472f706d16. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USWWW0201595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ed37019b0784ad92af8a8171e85f047b081fd2ff8f0f22ce0bfed9373bddb4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USGR10201178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db21ca491b3578c1dd6c08729d4107bb104cb1d8addb45b96df7c0f950af8c7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USWWW0201596.