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 0x1f766be9864bc75b65b79474ee9fa86a7e8ed2654734ca8da5be94a7cbf7cdf9. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6fb1217e-c42a-4347-b33d-2c1c066818ce.json and https://artists.proofprofile.net/proofs/artist/6fb1217e-c42a-4347-b33d-2c1c066818ce.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 0x68e91052cb8138993f4564db2c5c060ba4c3ad6990298de5a40f48a4e1ab4d6f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/HUA612022045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a05c8ee7d9bee7a80cfa612ecddde5a454dcf9291714de6a1e090f82cd9de50. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/HUA612022048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9da4b0e2aa65e18678be8a8defbfd1beaf209074eeebb1eba593b7a0bec44b2. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/HUA612022051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2c17dd5a99d6d72a03cadee70f9cad93f017bacb5233a77f0827b0b5aef6c1. 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/HUA612022052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecc7f151d1ee6acf0c7838728eeaac936063a7b7a728bb5398df5590b7350f6. 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/HUA612022053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e91052cb8138993f4564db2c5c060ba4c3ad6990298de5a40f48a4e1ab4d6f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/HUA612022045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803b5af5ddc20b5cdb7cac6115a626d20f5b82f6c031ab0adb1ef2603fbb7edb. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/HUA612022044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2c17dd5a99d6d72a03cadee70f9cad93f017bacb5233a77f0827b0b5aef6c1. 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/HUA612022052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1167165de31cf0f7c4b3cc02684d675d97b36990286c5667c520d5816718556d. 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/HUA611901922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897dcf8601e7238279a2ec5c3ad2825f530c620439e361ac9381d7bd4ff5d9c8. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:52:01Z), 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/HUA611901931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a05c8ee7d9bee7a80cfa612ecddde5a454dcf9291714de6a1e090f82cd9de50. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:55:25Z), 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/HUA612022048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2c17dd5a99d6d72a03cadee70f9cad93f017bacb5233a77f0827b0b5aef6c1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/HUA612022052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ecc7f151d1ee6acf0c7838728eeaac936063a7b7a728bb5398df5590b7350f6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HUA612022053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f326feb8d4dcbd5fef9fc688b269d513080b96bb0464e70bcf860f1dd69b76d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/HUA612303833.
Intersection of Common Thoughts (AERON FW24)