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 0xc24b8457e5097b9accb2936ea756dd8cf12d464d6a6284c9266f941e68f94d8e. 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/e7cea82e-3bb5-4d43-9b30-3cd31e2aad2e.json and https://artists.proofprofile.net/proofs/artist/e7cea82e-3bb5-4d43-9b30-3cd31e2aad2e.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 0x55e87694c9e86e50a84c724a96a3f2425c25b961854bbbc5210728bdec31cabe. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USCGJ2491058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1de46ca9dd527a2668faf0ad0778bdeae3edbb648c723ebc48e94461a2101e3. 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/USCGJ2491059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f90bdffc299e77fb4c49f4307f6c1ccbece1b5d53f2268cd74ae6bd8010529. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:04:25Z), 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/USL4Q2402067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290d3dea6bf0d6e2fec39768d667c71e374e93cd518c51a1a21204412bf10776. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USL4Q2439652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb403c7ad5977b8c6cc6ec70c8bce9a8b7e29ad51fe6f2ab228e311c2400e358c. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/USL4R2463664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0820f16551042794d45ae02534e1376d39f78951c5bc88148fd3df244dc120. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/USY242433311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b37b527df97b73605743543a0a0a5e348e8e1aeadc8d9f1d998584a5af65bf. 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/USCGH2559151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d62ee082b87d77e7a5ec4d04790b366132c0e9da569161143b43977345621e2. 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/USCGH2559152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4b8ae0330fc83508240745f0cf1c0c4837e663e5f0a1588049b68cc7b1b706. 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/USCGH2559153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22afdc54e96475013797d17231ab27e3a5b2b346f588b38f0774b294be099b4a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:58:58Z), 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/USCGH2559154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58aa0abc81ef0f58750aad3ff4d2af601876360b13d5ac45f5c5c686e51b35a3. 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/USHM92578530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf614c89aebf87c156edcf83a8ec459ded53e337c6df7677aed0519647935e196. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T17:26:19Z), 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/USL4R2532718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5d54a8746e1be1b542ed8c239b22a5eea60392dabea69bc3ea8d2de6207e2d. 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/CA5KR2512265.