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 0x815688fe465a47648e8a5fd24a9ff4890f755eb6fd6cdc418599179658052c51. 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/36a0f5e8-28b0-4dc4-9f85-2a35a1c90075.json and https://artists.proofprofile.net/proofs/artist/36a0f5e8-28b0-4dc4-9f85-2a35a1c90075.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 0xc4b21277b6c0e4cf994fc4735359f3b2744c5404b1f6876cfe2c01044d02cad2. 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/CA5KR2211763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944795bd5203631eda859298e2e4c365a0b54aeabd1cd31341245fd1706342d6. 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/CA5KR2424250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8952ff2a449a0ea3b8a3023c62936c63b6847797dcd6ab046b76f5b5c57d6b2d. 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/TCAHA2341655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768ff6b83abbf51974fdd43ecc34f20d364f2fe829e71a9c55dbc408b9de277d. 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/CA5KR0022906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef68167877e17ffaa4993a1149fc118357197df6e9b1efb0bdef54f14059f811. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/CA5KR0022911.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c517d545d5f2a64ef332de0f74a27b52a0f3d520f78c55d32411381bbc0e137. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCAFR2190468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd137906c92b063da38a554d09d8365b35d17485c1e7e7c946bfc06bb2172ee3. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/TCAFR2190486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a42910b0c3607074aadc21228d36f94031aa09d3b9186db8511288b5a22234e. 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/CA5KR2116075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5e9e6bf8c4350bc31de70f82bdf6e71f1bbc1d3074cc9eee7cc2e5981f6a75. 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/CA5KR2105150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e34483280a7d752559afe827e6ab9074bb91dcf259cf92d918aeb5b6c8667a1. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/CA5KR2105142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700fbe5921ca14be720bb077709052d23e3d122cbceac85d4892a4462bbbfc00. 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/CA5KR2087131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c648c2d0408c932822cdb3fc937b1df180a3460368ec2c4adc8d7a75c2aa919. 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/CA5KR2087138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74678ff09c0d5ba1a8ac6ca62e7995e5463899b92821b97616b8554cc78b635e. 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/CA5KR2087143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c1d9e480a2159c19019c3879f1ff9e5ed5d7d697414ec982295389e4ec056e. 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/CA5KR2087145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d57a35aafd5c0511b1b16817f0e2bb99ecb3e705ef82268b4e7d9a70e8baa0a. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/CA5KR2087132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ad5a7cd68de5bb8bad12bb4f6230a20b7e5c6a862bc2f2a4914cbf6e6fb2be. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/CA5KR2087133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2818617c8673040dd852b91cbed0379d037d7a0d2f880fbddacc39379372f715. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CA5KR2087135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627985f56d50d3e82d8da97ac7b7777a7e841ca4c6eb40314f0f466a97608a0d. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/CA5KR2087136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e698364d3fe5b670f5fb6c86f8911e1e1e60404bce4713bf384a92082042fe. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/CA5KR2087137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27516e38155c9d6a719f8e54253c5840d5122f2eb53b3f3809c3d68b64eec46a. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/CA5KR2087139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2594fd90295398102e02e43c729fe16a2f914ecfc558950a39451586e346b7dd. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/CA5KR2087140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257fc0162a37ae9dd50123c4cf82a51ced31b52e166cda439383ff5fd45c1529. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/CA5KR2087141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6efad7063eba67444abbb9a5ce820fd2e033f5bc133cd25c120373b1f028c5. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CA5KR2087142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13264a63b3799377fe6b0df988e138552b98ccab9c6435b26ec63be39f50b90d. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/CA5KR2087144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e948f12e028690cde392bd8b97f52382a820ef46f96b6433dfaffefcd9f3b7b. 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/CA5KR2079577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdf6b69c207b700f440e901f9dd079b61a3b0863ea69b30570ff534ac474cc6. 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/CA5KR2079578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c88d889140f011f010987b7badfd2223406e419ee8457ca7c5024eb6ef87b1. 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/CA5KR2079582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0342755b0f309945757db70c2cd4f7091428b9615c3068b2d0f9823ca472c4. 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/CA5KR2079586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7929dacf3d4e22428f2047dfa46cac72e5bb76220b4a81e16f4d1ab125887048. 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/CA5KR2079590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b2eafb14c8612f6dd6d0a16721dafbf3d79e85be1ccd7eea4b5e1c82fa2bb2. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CA5KR2079579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230714ac41a4b97e6c448b384a3bdf0167366c058a6fef1bfab5ca4439de037a. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/CA5KR2079580.
Salsa Party Time (Merengue, Bachata, Reggaeton)