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 0xc382d17239996d7205b1cbf4c74ea233adb8166dc6018572d72c98e3755426d9. 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/91aae54a-33ba-4be0-8120-b921c145e91f.json and https://artists.proofprofile.net/proofs/artist/91aae54a-33ba-4be0-8120-b921c145e91f.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 0x2d62da7e07b1a5d9f0262fe833289776124736a89d579beefe6ae4b36c988ebc. 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/USB4U0650574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb518ae6863e423632a0ca211f1ac994414c87cc5e36b9c1c62d4777a70c5ccf. 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/USB4U0650575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338d06f6f1a05fbe9eb13311e5107a0bad73c4b94c93ed47715bf6818920dce1. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/USB4U0650576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49af9f8dbe803d662d8727efb0258deb089bda2b9c4ea0a58e4952eb2c76f97. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USB4U0650577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa254ac5ce1e9297a063c9a081a213c2726001702c35260017a5373f74f4eef11. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/USB4U0650578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd8d740b50ac026f93aaf0bdd9aa84239a81268fa0c2757956cc951fece14d4. 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/USB4U0650581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e5d039ca2571eeacc80c19a5024aa5bde06a580eb36769a798a4c8825d5f65. 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/USB4U0650582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0196e7773fb086d481d3ddab22dd9794840b78935473a782aca70c643a94a9d0. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:29:31Z), 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/USB4U0650552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f458e52493a98c92d9c65d4baa89ec5c65d201f6e47d489dc8dbe075dccfd2b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USB4U0650553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca4833cfd3d4292a683ad17fbb0e6a3920ee5e4981cbee84e9f1851489b4033. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USB4U0650554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74b2354538c9811fc7fcb9b8c7e8f3bacfe5768574b0dd1d8e4445879189465. 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/USB4U0650555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e93ad819f9c2ae11742c320307970c17009595f034fb6b08c3e096cc60b279d. 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/USB4U0650556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1d21139a21a695082be816d6f91abacf20e91ee6de8308052c79db9e7fad55. 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/USB4U0650557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd490f85c614b3d6a389c30c35e2024d63d478c8ce527d5225caf604eb29edfdf. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:36:53Z), 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/USB4U0650560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c3f09834d0d2938caf4bb03a35dcc5027fc439d1458dea1c5da063c07ecb43. 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/USB4U0650696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bc3bc238a908038b9ee25e1134418c715756f96a68be5e0fe3a024df059198. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USB4U0605705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3739a11136756765f9fab73480570953dc47fbafb83acf8ac9067ba8d9c2e2f1. 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/USB4U0650706.
Sinatra On Sax: Instrumental Jazz Tribute To Frank Sinatra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eab6fd18c194d952855433e6aca216ba2e6343da2e851bcbd6a872c73c3d6d6. 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/QMQME1200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61457657f970e28f0764e4f90b1c48ea4aa0aea5228e12163540fb5d017dcb4e. 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/QMQME1200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5bac44ac73e556ae9226c1dc6d281232668a87f9cea09da4e9823c211d496f. 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/QMQME1200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d738f8edef7adf84e34efca4c56781ca727ea5da7bac7530b4c54bc7b3a6c3d. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QMQME1200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551f1fa55d3ff0e0a9b51a619cff4ec3a50926941d5c54ee232601aae7f4350e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QMQME1200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9677de53e807e0b6fd70731a54b3b23acce684561896bda39e847a47e7b3947. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QMQME1200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1907b9f4e5d3deb0ea40de71510b69875bf517db94cfd4361699fe7ae0910ed0. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QMQME1200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbf995c83776a785a2ba00066e21e56e6104e9abbda3ed3e56296696c049bd3. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QMQME1200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4927f44935b28f5198c6497a990b4043c37be128a74f8d4e7be5c37fec5f2c39. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QMQME1200056.
Trav'lin' Light: Instrumental Jazz For The Open Road
All of You: Timeless Standards Featuring Light Jazz Sax
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d542afd14ea8c3a25e6105de144c874bf1aaf8c000cfd1a1df1638792d9378. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USB4U0900349.
Trav'lin' Light: Instrumental Jazz for the Open Road
Gershwin on Sax: The Timeless Music Of George Gershwin Featuring Tenor Sax and Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd22522e9a697726c4a9ca86714ba0d78473911cc8d40990c46945896e92d1fa. 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/QMQME1700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5033dafd79fbc9975a4fd39b0962b0346e2815b4762935f1f7af9b66cf0d30. 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/QMQME1700065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6456fb1b99f6e38972b0de0fa88039bd2d85243abe66f531be9a59f87a42ee1. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/USB4U0650587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5485ebe22e54b607c455f3ef51c0ea68303681db6652c007b943f4b3c2003a59. 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/USB4U0650588.
It Don't Mean A Thing (If It Ain't Got That Swing)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd33f3b6097624fef2ed3d4d60fd4a5a42847d85e93d21962cff8ee6aeb4d83a. 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/USB4U0650584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6767d88af7264f5dd440d85fc62e91e655efc27db3e7ad1197a3a6194dcaa9d3. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:37:05Z), 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/USB4U0650590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a88d3cd80e37d64f2d29a1520b9534e11f365025d1617fa9dec0b7edd9629c1. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USB4U0650595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3659cdc02229205eda1beac14b40256232f8a2417bcbdf6f43de93384e1e8567. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USB4U0650594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53217477e7b5878226a3d0cde2c3c202eb2dbc98a20dcaa096c6392e509e7f7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USB4U0650592.
Best Of Denis Solee: Jazz Sax Performances
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc244cc7c3eb361aecf39bc227f8dd63018fe0461bf8117aef2644908b9ef5b36. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:43:21Z), 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/USB4U1250332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898022ca123eebf07bfde02a339e1c0d3311d47303e80ae2f37d2635a73a3e49. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/USB4U0650704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329d051a824a65dc6dfc74a229ed508a0750ff5049458c0bb312f7f21e0e8335. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/USB4U0650702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae208cf18eca2516e44f850d3abd351ec1f88eb402ccfbfce390d418de5be2b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USB4U0650707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f73f493c5003ef733aa82fade1c2123302b158aef1e636dba44471ff2390c74. 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/QMQME1200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd869ba280123c83239e42f9238e19de4869659ab7459bb3f63e6274e181f5d1c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMQME1200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac1f2907ce139be900ed98c1da5908492f8f705c612fbd1c44fae256e459435. 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/QMQME1200130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434d8301ae5ab0db882ca691c25309ddc5614f67d6a2b54c1c14e66015250167. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QMQME1200122.
Cocktail Party Jazz: An Intoxicating Collection Of Instrumental Jazz For Entertaining
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3659cdc02229205eda1beac14b40256232f8a2417bcbdf6f43de93384e1e8567. 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/USB4U0650594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547e904d6980b974af320429572548022330fb7c8d1daf538e52e11a08cac527. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QMQME1200133.
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