1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x0daafbf67a6a82f69a71b9331e09951efe0b9f7a846933412b5891ff8ffec38a. 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/e65b16a1-a549-4454-aaf3-818bffebaba3.json and https://artists.proofprofile.net/proofs/artist/e65b16a1-a549-4454-aaf3-818bffebaba3.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 → block OTSBitcoinBlock must exist at that height 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 0x99ff8d74a96b7c2d4d02eecf0bbd5fc94d436b3d30ee019d3a922570f51a70ec. 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/QZHNB2039616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d273b9d3134eb88479cc1675814e4fdd575fc379d8b672327f864fb1645634e. 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/QZHNC2018935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb68bcc774aada8ce7e463bbd53c6d5687295cbe1182799df12a4cacf63b54bd. 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/QZHNC2020042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4d6693b7f5ad6305a3a975fa19e80c39bbcb781870799b15abefe82321468d. 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/QZHNC2099516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7de5afb332d29c17253ffcbbd7c0db1fac0368277a9a729fbee1aa55ce177e9. 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/QZK6M2029171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e3d5b7c53cc2256cb72fa7dc1e2b73a15962332b6e29e9fdbcd983dadaff6f. 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/QZMER2060498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfb7c1baaacd29851de5ba6b7c9c25f93d6de20eda484b6622f4c056d0fea16. 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/QZES62188826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2db12a036df971893b97ac2dcbba84003b4138fd8ad4911e564863121ce5a47. 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/QZES82129452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc680cedfd7d8d80da42c056e555a3f4f13c7196251358f9941b51d34073f5b51. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZHN62256557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7c0b9c77eb934209322509d6074cde76fe9556a8eb7b0bf6c685f21c1cc49c. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZHN62256558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39c48b20fea19951ad6b37ae3d5366a52cfd4446fc608d13ca85fc808d18594. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:32:33Z), 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/QZHN62256559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3748490f631add53c4f89ea1483c7846375b74b7ddde888a25fcd2225f63984. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:59:20Z), 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/QZHN62256560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2861a074472acfa85f4f8d67458392c9fce389cd1c59c5efd3ed6ad4d22e6fd9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZHN62256561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f065f54763719cc08a222c0c36fc01d5ab4a1910fd33b6067aab6fbd7dda14a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZHN62256564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788a5d43780a764dffbb14a5407d2eb3f82d8ecb6aeea7baee2ce82b71b89f12. 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/QZES72371548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037be48ee1f8eefb666556474558c20b3b805336c74a6657c43422c81cfe9834. 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/QZNWQ2313699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe218d397170eceb5a655a959f262aa2ef4770e57b6edfa9eaaf70f52e3eae9d4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNWX2308028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b97a07ab02a9d9a5600b9c1fc458461dfcba87282e0fc6d61303ba600970267. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTAU2390866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6d84bbdddb70d0e0e1ac2c39fc6bf80dd2647247381a0d8e7b8af4de4aac07. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZTAZ2518999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba15d1bac5deb8f55c2d276d3ec57a987a8a258a4411cd14c102df9f43c7f96. 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/QZWFF2541714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccc1826ba5f59bd23bfe5be2ca72fb0db2af360eb331598ef4732a73ab5b976. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZWFF2543646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e285153bb5dfaa705c2239531dcab4a9f171f3a4b6c3eaea4e42fba305e813. 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/QZWFG2520322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe750fee15d209c249d77b2de2968114184dd6c7b91f92394316f4a38c2c0e35d. 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/QZWFG2529953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58db5b1563403298cf5a4c867e37156f8fb2c58a0b0ec437e9d551e2d69ef8c. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZWFG2520451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d557067f54873f4756d5c4b38bdac9f29885371ce993448307198d729c754d. 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/QZWFJ2544290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0a294166bce8e5d8bdb70b6fe48ad11f750710d0eec965ebd3ada208cf8569. 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/QZWFJ2525300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5135b7494cd99927975e45d4df0a80eb060e8023d5cc738ffa0c70088de1a2a7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZWFJ2544297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ca0c75380b4b6a1b1cfc495c7fbef7532172b985a3e83cd6c7e4eb9eb72af0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZWFJ2528745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40e0b77915d6625e3935d43612624fbf09c365f45533315a3d55c7db2f84316. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZWFJ2542079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28c78a2319bc474a60fd7908b03f667043abb4c02989a3de590b99265a3a274. 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/QZWFJ2535163.