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 0x282dc30dc3bcae323a7bfe9c4a740ab65a5b86b90e3547423622521d8bc487b8. 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/0a39b55e-fa61-4fcd-ac18-d5623343420b.json and https://artists.proofprofile.net/proofs/artist/0a39b55e-fa61-4fcd-ac18-d5623343420b.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 0xb29e8268f93e0faedb5c3f0bb603ce0b08b5d5a1163a5b643483c42bd3cca693. 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/QZ4BX1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ce8f445d5646c62e9d1cd59efaf1e4d7d3bd43b9c3685793fef304a014b5dc. 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/QZ4BX1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b69b97fc42f5a655c75f41f77ab03bdff3dbb7a1223913ecd8589c6093e34f. 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/QZ4BX1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a00b4a9691eef580a8c2f6d872e37306aed9d988285c089e582ba9bcaebccf5. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZ4BX1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d263d3ff4d3956c395862224f8f7e76bf64b2541c5282a82ec278bf587c0c7. 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/QZ4BX1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf65a0dcae3219bc170c7a43247a3f236c358d3df3f3d6bc9eefb6487febc026. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:37:54Z), 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/QZ4BX1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274acc5221dbb8ec6830baccd126c1aa949dda1b8fa2d029ad978935882113f3. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZ4BX1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd527792418017c13e00244368699c9c9c15d2d81025806cf46b28a217d92870a. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZ4BX1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0b5d56328d02f7256b96196182b6a3daef41291371d3bf556f481cef7fbae4. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:18:47Z), 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/QZ4BX1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fcc57656d794e7e4a1c9ad7aaefef84d21563c9f4962f2db2e3af882aa5db8. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZ4BX2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10adf9027f18f280c5a61ad5b112d5e00a5923896f2bb9bb32b82fc0c46dd7ee. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZ4BX2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c8d8c57e17eddfebb6c72dcaffe8d99894d988b816f4ee50b62bac930b41c3. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZ4BX1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fd5334481599d394f2b490bc59f439dbac6f0f1899d8759d525108accc5a58. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZ4BX2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8671c7990b2ced7adbe088f2f51ca88745174226c1e32e585cf08d8fd9e5ef3a. 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/QZ4BX2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e14d373df2b2f7e152a916086f3f02830469407cf0aa9e5a473894dfa498fc. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CAN112200454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1021fff7479edef67799b300c9bc0f70a4a4abadb7c528281b398def38e6de. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:59:01Z), 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/CAN112300165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac0619804d6de37005022315ae58dd8bd7fe419a91862c2002a5ff695e495e3. 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/CAN112300819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bae1cb9c176cf93c108d3702fd7d7f83cff8a9e084429e81580c680527cfc4f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/CAN112301773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a88577a1f5cff24168aa338cb09c052f618eae7beff22ae698bb6fd7d70f3c. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/CAN112302179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25fb923b24a6c813e8ca392889455e61df5adc1a334075704ba00cc32f8c6cf. 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/CAN112301774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b109d52bd71977126425366ee0bca88857db358b7ce7bf85b9829156e5b5ab. 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/CAN112400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8686fb542f50b14abbc12046ffc06b6fc5e00fe8880775a26aa26a472fe433. 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/CAN112400506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35872b62a2c282c16a5b35b999105689be61c3110ec37cf393bbf55edd044768. 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/CAN112400504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d0b8cd9a613537869da0af620ea528de73287482809ebcb1132f5f106033a1. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/CAN112401738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d0b8cd9a613537869da0af620ea528de73287482809ebcb1132f5f106033a1. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CAN112401738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35872b62a2c282c16a5b35b999105689be61c3110ec37cf393bbf55edd044768. 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/CAN112400504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523be47eac735677fd097e55e9bd65b31beb4b89d912f6153031a821b000af8b. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/CAN112401929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85755e6d4553dffdd7e7aa4e2a2a104e99152b4a6bc30a1fb75c8ca1b488f5b3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:00:44Z), 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/CAN112500295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f4afdf1cc9958247fdb7b9d5795bdd72c2e441b9dac3c78b53d5d72ae2a7e2. 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/CAN112500172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29320e71b44782bb9fa49dab2131f5001b23ec2cdca64ccfd67bc522dc28b3c7. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:53:45Z), 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/QZ4BX2100003.