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 0xde10037733d8024d77aba6897368976be40a7251fc536b69157e04779e909e8c. 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/6bc31b56-e4d1-4c29-9cbc-ca76c52b79d6.json and https://artists.proofprofile.net/proofs/artist/6bc31b56-e4d1-4c29-9cbc-ca76c52b79d6.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 0xcb168ddfff2e62455aad113cb31e5bf10bf12017663f44147f1189e0ef8e5b49. 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/CACWV2461740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b58d938faaa4556ce30b372cb1203d6a4738b5b26aab14a6899278ba223a25b. 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/CACWV2461745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069d5b1b3366effc8b90f7fd2d46f4dc74042a48c71713fc5b77eccb9ea206d7. 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/CACWV2461743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462b9042452a66f2136d40803b43a36e58512de9b6e44336ada54f525f824995. 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/CACWV2461741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d012d0fae83d147743d5e17a2e0bd61123f0411398f4d2f912123053c2428eb. 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/CACWV2461747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbade0131cbdaeaa0f82a17eb64c565590a5e74491108aac9bf24f010465594b5. 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/CACWV2461746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbbfd2e7d664e210793883120ebafe09a2ab29a05aeb9f6e368d9fd3d7479e2. 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/QZW9K2373044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202e34b4cd17930e9026609f41e3c6c6673be678fe25d7e0d7eefe669daa8cd1. 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/QZW9L2367392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55851eb03f182cb1f9c0057bbcfec200f4aaf3b851867c02119127ab248509d6. 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/QZZEC2443102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32db3d33193a4a7b0fccb6d19f683f8d1f87e4fba73b2fa8320dd05f1c111c05. 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/QZZEC2443109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc905e49152a481cd416939118610226576e5c49cb9ce93eedc62be1d404d1eaa. 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/QZZEC2443112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbfdda89b09e52d821345a2ae8887ea5e35c7f9ff08a2984d2ab5855966f4c4. 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/QZW9M2411605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48081d9b8b9ba1a86f0e89012ee68eb5925ecf31b59acb46edda3e9155f2f0c. 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/QZW9M2411606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb607dfe07b7b3da0354daff876fb6055e69d596fd8e27aaed88f1360e6a621. 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/QZW9M2411607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cbfdae7bc397472a979264540953007722fae44e17cf3108099879334a18a9. 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/QZW9M2411608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e918dfa0f624e2c71a7fcf5dc8722ac116e85628e9bb4f1d3565b92a84bc40. 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/QZW9M2411609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79953bf149451d7c58d24195fb6ee67bf8197210ce230118129b97661a5c395. 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/QZW9M2411610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3c2a75c6bdc3593b55d8eed30af0c2380b95c16381ce62b9f10b3efb51cfbc. 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/CBEYJ2456247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069d5b1b3366effc8b90f7fd2d46f4dc74042a48c71713fc5b77eccb9ea206d7. 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/CACWV2461743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d012d0fae83d147743d5e17a2e0bd61123f0411398f4d2f912123053c2428eb. 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/CACWV2461747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde535ad1d4ca015e6c0ceb6671604c8b39740293121480a4e954ca318f8bb580. 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/QZNJY2313847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf60ea04abba1caf27970109fd6c2d6c589f372f347b70faff53ab762f76ff9. 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/QZNJV2575992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bc9b9d0b5a773898018611c2051322e8c06cc767fb60ac6e0a2127183dc01d. 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/QZNJV2575993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9c78d7b2fe2b2914068b8e24a7cf4a53eaeacbd9b851babf4619067451a318. 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/QZNJV2575994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522030673f54017a050348ac525788a5bd7d14041875b2e056b0d6e8204a11ab. 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/QZNJV2575995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9307ba3eeb84272d8df650ce5916693ec89245f2b0e7c990b43f4d39739f7b6. 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/QZNJV2575996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9101d3be71a870263dafb3b146cfd931f930b2fc58bb06da8f00b60c4f005bc7. 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/QZNJV2575997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced5c28205441ad177fa8a095889e33cd6f9d4020c31e6a076fb4ddaa4f8093e. 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/QZGLS2526224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e058f51ca59fc4200fca0da50412a303a6889df464554496a1a3caba907257e. 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/QZGLS2526227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580a9d64af5b897c221cfb8781e9939f91ea888c578be0a78387f94cfa03101f. 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/QZGLS2526228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54cbeac08816defe37ccac8cf3a9fe0e31de762de0567fece9f7181e766321d. 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/QZNJY2313846.