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 0xca5b60e98ae810f6b79b128a824916a7e40b24407064a993684e7a3c431d360c. 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/6bd23621-f71a-4741-a975-34b8e9226529.json and https://artists.proofprofile.net/proofs/artist/6bd23621-f71a-4741-a975-34b8e9226529.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 0xbddc7a1f2f5260ae946462c8b2587df2586f9795c49d4318f26597ff8cd15202. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/INU252518591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478c8832ec0d3e33b0987565832d48c08d5a30338bbee2d249de5da4077e44f6. 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/FR10S2529008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12232da20b77fe7bafd53a5f5744db066bffd287290001b78a8af6d1c5cf074d. 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/ING642420933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4566f20dc962595e0f5a696b8350e87abd7ce9e78acb501d006caa05a7d25a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/INSK92400511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fad6137addcf6f9d367bcf5d40ed3b29eb6cc32a1c0ab2090f49435ea610bda. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/INN242405429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1478d1f5c2b791bc6eb846d718bc9db2a2b10b5600d81c3109dbbaa29192b6e. 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/FR59R2441184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400a1c5971d5e11882704cbf6f11e92a2a53d08a4d91f1278bd340bf162ab95e. 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/FR59R2441167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187540b98241076665d5b594a7ff4d1c8a99e11f0ee5bb405276cc3be079fc48. 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/INR732400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687d9b4d2ba3c82086c6ddaf7c53bdf32fb6749d396e9a890dd11fb61cca457f. 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/TCAHP2367141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b61d9b03214ed36c96307b93bc5f68e64a70dc5e3ddb0ec8683e0f7d952452e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/INDB42300450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fd7480c8ea2cb7d5778a29c5f4761cc19c6342f33d3ebf33a895ef035b811e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/INS6Q2002959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d1463801e855e972d444c14e23190bea7c0cdc9d7145ab6d9f34ea817c2e9d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/INR732300452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad5b6801aa8b4862311df40e5712a5cddaf6b9f634187b177b7e20df3b236c3. 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/DGA052303222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1ce93958bc0d854dc773e03e3544b970603b05b6c5360e5b64a52b9ccb3514. 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/DGA082232205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec32ee6860859c6bb8e650c0e935482a0b67b9b3414a7ba4c85d5e0ebe546d0b. 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/INN242200796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004d1286a7e22335863f75d6500dfd8737a209789cabec5e1e5f51586aaa9b4a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ING682200239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbfda075d499bc92c43dee6dcdfa457b819d73478a9e2712fa4f7cb0e5637ec. 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/ING682200604.