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 0xa3b157b91a764ee7457c063400fc2f0ae6c30eaea9c82068182d4b53de502a83. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f04848dd-1d57-4179-96d6-dafe214fbf73.json and https://artists.proofprofile.net/proofs/artist/f04848dd-1d57-4179-96d6-dafe214fbf73.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 0x3a987a95f4fed88e8fc842c3d3924ff505506b29f18d055cec12c6a1520a75f2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITA642300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579cb6365b6b48f43e78ad1d7c057065fce4de96abf98bfdc34c43de6ecbf01e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITZ332100088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f23c876546899871af38c66590050454c6a1edca82f1a84fd0294c280d1684. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-22T05:29:32Z), 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/ITA642200092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e59ef3be32691e6629a5aa4b83f8bf9a0fc458b04385a54258e81b54872ae3. 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/ITA642300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728dade4e067516af6aaaf0093ed769bb098d5953818131da889217121663659. 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/ITA641001733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72dd18967334e8d10067ce729b3e430210563ffb29b5c585216d601477729ae6. 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/ITA642300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff8c41870689e0897d7680ef18abba26866cf8fc97e84b797ca5bf94642a914. 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/ITZ332100128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0ba7f30a0319d5a5dc32c0b9cdb8f2fc2916ac4a051217980eee7a27b97ca7. 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/ITA642200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6428dd551a973d9e50aecb4abb7f6e0cd6f669ca4e40100d17a0674a65004f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRX202047009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267781e75ab134a25f9dc77407482cb62c7ccaaa6df34c5c0c226fef3159b118. 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/ITA642200121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf086ceaac0cd4357284b69b8c24fed5fac47b51d1ffb55233eadda1a596db5. 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/FR10S2070677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd20ed55a1b889fa24309564b9ec028b6631112d255cd73b71621dcc014f67f5. 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/ITA648100937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00be2f2e1d98a36d118f2a1ae58806d261cf8a4fa152983abc1a0cc8a0d6cdd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITZ331900048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7e77acd5b42b57ee63e74b0b8a7a53fe700647fb74dad1d613f993470598f1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITA641001735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8defba27decedeab69b2c3b5daba39b33700561f021f19b86d61c943edf280cf. 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/ITA648000941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b9348c962d86c935c513463c90f7412bd231ef143d25dc9a1180501dd74e6c. 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/ITA648100934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84828d2dc2851903b4709272b404e9698604c4164e728e1c91c6085cc53b6c02. 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/ITA647900295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff8c41870689e0897d7680ef18abba26866cf8fc97e84b797ca5bf94642a914. 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/ITZ332100128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579cb6365b6b48f43e78ad1d7c057065fce4de96abf98bfdc34c43de6ecbf01e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITZ332100088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56dbc2f6a1f4d2fb4e4216e0f565ab120db71a3e4526dad5c90e39010a72eb7. 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/ITA642200094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7e77acd5b42b57ee63e74b0b8a7a53fe700647fb74dad1d613f993470598f1. 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/ITA641001735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27fc655c686bf72a25ce6be8e493c6d801b22f30637f925d2bb4c5b212c10c1. 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/ITA642300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d2832406cd25c331fb1715dd29f3cb958c56c52bab5bf25a2afc5bcb7df43c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITA642400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00be2f2e1d98a36d118f2a1ae58806d261cf8a4fa152983abc1a0cc8a0d6cdd. 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/ITZ331900048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4cd0010f1f0a60e9ebe8dff5baa2783b8f5740fc1ea7a71f53a481fb304244. 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/ITZ331900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca6bcb9ec840407a626e85d982e1f11d768eee2ca015b054f5bba06de550b5e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITA642400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf086ceaac0cd4357284b69b8c24fed5fac47b51d1ffb55233eadda1a596db5. 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/FR10S2070677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583c68fca41fdbfe2054ba9941a7d7b51b0d60bf032ffac46e51d6dc8ec08f07. 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/FR10S2070678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cfd7c5a7e5fefd132e9d4b433315459750e5c8cab3570694cbe0f142e39185. 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/FR10S2070679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd794e8e093fdabb7a22f1ce355a9029fbeba49cd959915d30ba2699bf8736dd3. 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/FR10S2070680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8085715c6991b489d7fc9d6afde93ebd56adbca24a7c21f1dbaf63229f325bfa. 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/FR10S2070681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66b5c2aa6745a66ca169e8ff8c0a543848eb5f058de420d4eb1c70a603b61ce. 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/FR10S2070682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84828d2dc2851903b4709272b404e9698604c4164e728e1c91c6085cc53b6c02. 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/ITA647900295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff8c41870689e0897d7680ef18abba26866cf8fc97e84b797ca5bf94642a914. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITZ332100128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583c68fca41fdbfe2054ba9941a7d7b51b0d60bf032ffac46e51d6dc8ec08f07. 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/FR10S2070678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bce4b0dc3d6a7e9d70d908a212fbda1a471f4dec0797291617eb7258dabfbdf. 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/ITZ331900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b1daf17cab075548ff194aacd909d18d3253f41f27bfb0de3ecf1ce8d07a91. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITA641102028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cfd7c5a7e5fefd132e9d4b433315459750e5c8cab3570694cbe0f142e39185. 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/FR10S2070679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf086ceaac0cd4357284b69b8c24fed5fac47b51d1ffb55233eadda1a596db5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR10S2070677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b9348c962d86c935c513463c90f7412bd231ef143d25dc9a1180501dd74e6c. 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/ITA648100934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84828d2dc2851903b4709272b404e9698604c4164e728e1c91c6085cc53b6c02. 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/ITA647900295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2e8e8366ff3bc247fa4ef2e554086a296ff783108d8ef959f154b1f597be52. 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/ITAF21000025.