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 0x6796cf2340bac2c73bdf555d09195066c3dc9bc55d71ddf32712a773602d73be. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33f6b6ff-9665-47b7-945c-bad5723528ff.json and https://artists.proofprofile.net/proofs/artist/33f6b6ff-9665-47b7-945c-bad5723528ff.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 0xea3110ece4c5486fbf9d6cfad2625b1f231e5c72dd9b22e6392909b0174bf717. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:59:55Z), 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/GXF9Q2514378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3316d9a0b6cf2825d08a65785178d470e98d1284f2550b196f8f18c96e5b09b9. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GX3Q92587191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53467ad637687a57bb7ad06c51c1b7fe08df82cdede1cab3f8fae83b8af2058d. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GX3Q92587192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d550689503a80f52a387d9677ba9c3bd2564f40b42364d32c266a03209258f. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GX3Q92587193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503aa78f7afc1b3e55658a67971e3c49bdb403068db2412bf39172e60b6b86c2. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/GX3Q92587194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97cda728021efc8d27fba1c1bbc000ba6fb60d569fe8f6aa6da3f6683b789c84. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GX3Q92587195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e3b6a9914141a38fdf699dc13b21de1b1d58dd88a050b28b094fcc41256daf. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GX3Q92587196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a61bfe3c2b6cd6f4d1aa8fed3dfd2300f36605c05e2c256026764c83468a82f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GX3Q92587198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a878cf43d70bb982b385bb0bed7e18f5fc4732837842122921c7f773f90fc86. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/GX3Q92587199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9859f38e8d6d810c7db5ab197e7faef8d23887b8987b8a57cf5ca8dfb5cf64e0. 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/GX3Q92587200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd285be1f59697bcefaad7dfc717d15e756541712b7f83b8ec710b79b56b859a2. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GX3Q92587201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4d49d6580ec9bc5121f1347e80fca6266bfe88b27c389114bbc98c9be88359. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GX3Q92587202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d84f476261bb0e5c4779b89d27c228ab29f9aefc40d30b7315ee27b07c4807e. 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/GX3Q92587203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92662ee0c02030b7ab5d5406e1b46ad9bac85132d1d3eade1c215513df694e65. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GX3Q92587204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8be6e7e92800f0634bc8ade5fbac1d488fe5758d848716f6932c187a4bdfbf8. 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/GX3Q92587205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51711ed33e6cfdc209895747fbf47bf3eba6919f7d9eddb054745b078d48ab49. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:09:48Z), 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/GX3Q92587206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05befd24c82669835b5947f00ba86aa0999700cbb06108e8edd9599b2029a26. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GX3Q92587207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd823eb6f62f1053c2f52794181f0504c56e4305aab55f1e915e2b6ae6ae512ff. 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/GX3Q92587208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f3c109b53734c0f8aeb62629055b4bf6eab38d34d79ab276d9c4d97fd6e066. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GX3Q92587209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9563ee70cd49e9c341770dd167ce579a0cc2b94f40f035892dd8fa924ea17cff. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:16:13Z), 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/GX3Q92587210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13cc590d97d20e62bc68c557d1e7c3cd901b43f6d8ada7f9dd4549bf4630437. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GX3Q92587211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319456e8a226c4d390fa21b2d4ce2128241e98accf18c07662d4cf345d166df7. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/GX3Q92587212.