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 0x59940c94e4150d60388056cf34665bf785f3d959f02db571c7e59fd650e13064. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15053881-cbba-420b-9a0b-74e2672eed92.json and https://artists.proofprofile.net/proofs/artist/15053881-cbba-420b-9a0b-74e2672eed92.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 0x2b1985c29a4e4d54df25dc90b816fea668e704cf47ff78afd8553ed551d8e128. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:59:25Z), 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/SE6HN2086944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58df8cfa96c235bd48679133a4f873904082a251760b4b21dd9035096c0caa9e. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/SE6HN2086945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf218be554e9d9476c90af4f5db7755913e29944d4c36c130cfa610e2adbeee14. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:42:14Z), 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/SE6XW2192723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9371d91ed654a5f17847b642699e36e472e99338372eb7e78600e42d2bacffbf. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/SE6XW2192724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf483a8a5dea2c53f491d3f59b44b93530848ee40f97ccbe980f3872d600ae639. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM6MZ2231289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5ced95f3598978c417fcda1793646380c9af83fb31b0b080a46cf452752c18. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:53:15Z), 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/QMBZ92251478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948313e4365df7da26ab6e600395be045ec4642c8fda26cdf8fcdcca10b155ff. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QMBZ92251480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56f6db4564574ce0cde47a433d6256197943ccba046b2fa7ef8550542e5f1a6. 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/QMBZ92251482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8d86c16f840c813017057339edc70e711ba184f51745a66cd55ae1b2fb99d9. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DGA082379380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fb0a7b0ed44423a6a31eda872319bd81aaa7fb00d76323961691db5d16b442. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QM6P42475193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4ad59bb727930cde3c571d59f09190c1314de0bccf2fb1b223b0a9b5d77cc4. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QMDA62405665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace5034a2a25ba896b761600af5d724ce94731abb1569036e92f41adbe8f456d. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:55:58Z), 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/QM4TW2531958.