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 0x8c3b893083b0d60f74e36f3b52d127d95786f1d9ffb94b92321bd143096242c4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/66837817-41d9-449f-82d6-c7ecc16e2ff3.json and https://artists.proofprofile.net/proofs/artist/66837817-41d9-449f-82d6-c7ecc16e2ff3.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 0x01e55e744733444425be65c7d3b4f6ec7b14d3569db2a2e8baa0ada910fb541c. 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/QZMEM2326371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe351e8c8f7b18a085187c297ca9046bec4fbc5cb3491cf4a53f5da066e65bd. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:19:13Z), 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/QZHN32287048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb69b50458903d5c7163e12b9e6eaf6293f2fc00d4e07b4d0f092bf58f9703f. 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/QZHN32287053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc09ed4781a797f913e20cf37c5b4ca3a18de00bed7b661194afdf95bd8770c. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZHN32287054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b1cfa10aaea28d49b450b9617c77d9c3b931b38ae62d36a07bb40571d51343. 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/QZHN32287055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8a8fa35b7240b5d9d16c34a5b56ddda1b710955bc07b0b9f68d6ef7c79caa5. 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/QZHN32287057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f0aceccbf40ff15736b97316d0b283082a3060ff8a89f627ceb83f61e2370b. 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/QZMEM2326375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0c5c697abad05c249d8f8202d03b9f24e5e5a1a71b3557db872f14a0279bbc. 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/QZHN32287061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c87ae8cda4ed5ab7c114753fe1e913331cdd3d6121822d81e5845b5ed5fba4. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZHN32287062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b07e1c74dad5e30d2c97d3af210bfcd87c56f0b307a6c22fc101b31a401db73. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZHN32287064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0887c13db660de0656ab687ff92472f6fdddceb14bfb3e4ec994ba70a79257. 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/QZMEM2326378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df686e81c8141781ca8173b15a4ee33ecf2c3d7ef8c19dc87dc1428900f1611. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:16:43Z), 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/QZMEM2326379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141e57ec7ee871cd13559f48b53bfa08b0adbc5358c4682c8e72752d5ba7d48c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZMEM2326384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc84007b6415636133f381bcb108108812d4d1bbda09ca68527dd30d9c4a9a9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZMEM2326386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1777831aa5c92f4c7c3d459028cac01491e22f9eaf2d2f9c96dbda3087cf0465. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:04:36Z), 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/QZHN32287044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eeded6c7f98b513aa3e629f7efcb67c63a6fb420aba2a3aab04ce00addafd2e. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZWDW2406311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e70a49bfb50245139642860a462d6c3a2ad30a49569ce005a0e0d2e978ba85e. 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/QZWDW2406313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c17ba7cba78002589738a22390179d68b70a321d0bf6815307a8a0eb3676e7. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZWDW2406314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a54da7eb54cf7845a3566a886d9579574f42b142549bcd9ec054cf95e166d9c. 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/QZWDW2406315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad811dafe314dac34bc3b71950abbb9d2fedab43aea8ae7431d2665e849458c8. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:49:36Z), 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/QZWDW2406316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02736ecf4da4e7f61545c4e3d4b246f6294658d1d9d0bdc7fa7a16219b15f3c2. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZWDW2406318.