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 0x819e4854f8c2bd0bbc57951ab55c12a845621cd9404217f3193ac7d7e8436552. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8d1f206b-5dc1-4fb9-b52d-c01a78c379d4.json and https://artists.proofprofile.net/proofs/artist/8d1f206b-5dc1-4fb9-b52d-c01a78c379d4.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 0xf4c665b6f3bd49262793e47d29807dd30d3bb7ff6d300a683ece10ac729c7c80. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QZ76W1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45f6450bb649eb8e7b4c7103937d5160a3cb067f027b7e3b6d746b428739114. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZ76W1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545adce9eb86256a3abd1a3adad6b8891aa10f90549865a207e0c0fedf2fd73d. 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/USCGJ2345377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9985cc7e3f3c173283ddb77f96fe2530513d5177816fd65af3e12d6a1258dbf7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCGJ2345378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0b2df7dee7794d0c6c2ae0a92ed5e1f233ca11adbfe7c0ce3397795370f4c6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCGJ2345379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b35ea3e44abaabcaa8e22384acf00fd2a8b782350974a3f429a418558a469ed. 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/USCGJ2345380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56c41e242cd334f7cff437a11817b13a12e05236ab67c2abc327e80782da25b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USCGJ2345382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27ae5af744249705133b230a00c8b61a13764e87b865feee76464cdcfe2fe5c. 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/USCGJ2345385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da7ce2b534d04e3643fa8295493301d5fbfd9b5cad68635aebb69301614cd74. 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/USCGJ2345386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0f199055167ff97780f90222bde4de5ba7c42f5bc4a49ee996bfebd1460ba0. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USCGJ2345389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2950ceee1977c7f02a9242f07b7bc3ca099c28363957915ce798e17939e14dbe. 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/USCGJ2345390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc0ccc69570c7510ab78e7f95a72b14bd2db50ea7fbd580d9cb117b5a879ad2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCGJ2345392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15452e79190477f46d65856c2ac348d20f7098ce8877ad43d2f2947d5cd51da4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMAAK2085165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f24ba24a58a0e7a27e02b458dab2a691188c456d0d1a87bb8cda93cdcea776. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMAAK2085166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3daba555788d84fda79d5c8cd6f894edba428e98057d2c063da5a7c7a1a158e5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMAAK2085169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b904e4d37cf69d6544ec8384c273626bd098d9aa60b79165f6aa729be9f73b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMAAK2085171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc1444c12aaf83e1946dff01177677f48d5425885297c50297fe460ea297ed4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMAAK2085172.