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 0xeede062a2b1b3b18687ec475987c86dbad13960d91710b10b9eb3bd774eeafc2. 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/f5d609eb-52de-4aa0-a641-6ed0c501ed26.json and https://artists.proofprofile.net/proofs/artist/f5d609eb-52de-4aa0-a641-6ed0c501ed26.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 0xf140a79646d7f9b0c6d1e8db07d153a6db98d3101703d130640b273f04f157ee. 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/JPB602100110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc41adb1f4b4725711d5060717eeedab6006f6af99419d790bc1a8aacc4c5cf. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/JPB602200395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf140a79646d7f9b0c6d1e8db07d153a6db98d3101703d130640b273f04f157ee. 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/JPB602100110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dedbd51c1a9cf3b698b078f0953a08a8f02904204955fb39ee1f28f0a3715e6. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPB602101373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020b59eb1f62afe757d468a0b701fed5528acc6beee0cceed58d643cb4a82560. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:00:26Z), 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/JPB602200889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04e9d8c5819d7b75729be8d9f73253bd52bbcd81202108c05701dd00d870f1a. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/JPB602200892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd77b3e626182bb9fa6c5da9726e98daaa2e96d3ade3172d34a56b376b53eae. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/JPB602101782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc41adb1f4b4725711d5060717eeedab6006f6af99419d790bc1a8aacc4c5cf. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/JPB602200395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74673edfe625558d2bbccc6a3e3c49d0418a00c7a048e4066df4f42089886f64. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:37:08Z), 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/JPB602308631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327dc872ae35c18b7a96a28dc6a1b204b5642f7debf17967d859d15b766ca394. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPB602500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e54022f05dab51972d607f4b273dd22037a33ad7aadb229d2601c728ffdd785. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/JPB602500073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9e40d8cd3c0458954694fa668605baa8c7c9f141406679ad6dbb2251850c3f. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/JPB602501877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c20f653af12707b8a221cc6afff1254f77fca91020e55137276bf1767d7dd1b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/JPB602501883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac9754b2636d664a197b65337e0e72bae3052f65aa014693a46c72f8685d481. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPB602500300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a06d6bdf90662e81d8300a140002c2c0c92d0287bc73a4fcac4e5d7beab1c26. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPB602402767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18dca8069b19b1e965ca83d955a68ddae5daaad62c4a94069c4c5d88bdaafedc. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/JPB602501887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e96a9c3f4eb64c72b392923c573b7273a56ffb2b978eb0fb3853a8761ba12c. 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/JPB602500019.