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 0xf5bfc226b3f275372776ad3a4fffec5dd4d54aa642dcf0c24d4f5453714cdb4a. Chain 2 (Bitcoin): anchored in block 953879 (2026-06-16T02:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09ff0d2f-cb97-4c6c-85b5-5c20356bf200.json and https://artists.proofprofile.net/proofs/artist/09ff0d2f-cb97-4c6c-85b5-5c20356bf200.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 0x7da63899a442357cb9bf01a123d1e74d9c5af64d1d3c6934f1f78473c23df8ef. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPB622201228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a53ded20c8fdfd584f6b0de14e38873fa1d05798ddb8bb5d083c0ecc77357f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPB622202806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6df3465eb1d6da06b899541e0afbeffe7de7554c0e53c7d4d345b2ab254952. 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/JPB622202808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a640d6c9679ec108f8874be08eb5a67c1905fe3223b2c506950cd12647627db. 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/JPB622202340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe7c04a07ef668303b081fe74bfaae2d8f570966207e03e255a2e639d58eb77. 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/JPB622400388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93d31b7df6a6692a27f90ea8355e94011dc93f63e003bfdea7cbddce6fd5955. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/JPB622400390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5024198a7e90b1a14ac86be2441ee4dff9b69422da8ae2bde97e73a266605756. 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/JPB622400389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3207d04e6510e5ad173fa4fc18a5977b33b8ada5407aa6b56e8078e37e45d23e. 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/JPB622201374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9224dc694f77815e885c83f43886685c08b002ce751f17bb10249b9a1a3a1b16. 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/JPB622401304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8f831641ec137cdd49494897912f6b4084571b71125a3ec81eb43a394fa5f7. 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/JPB622401307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9202a1d9ad8f3c4ccf1b1e69ffcd864dd58474cc8609b116f18c3e10f9ec5d. 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/JPB622401308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5c2640e0321e4274865b70feccdbf55f6a5d7b549e2506cd3fc423291741a3. 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/JPB622401310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b37da3ad322066c0017e57fc82a80adcdd297149291bf23d7d2113598182ed. 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/JPB622401313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6859fd2b1af4a7debbcbac17651f4cc564cf56b7e3c870464745c5e1455603ab. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPB622401314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ca895d6f2f595e08c9f9923d23fd55af05074aa631459b90461a1d7bc1d0bb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPB622401315.