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 0xf3275ef3c4145e163e4b423776586bef037f16a065d8aaf2d6ed1e92c6ec2fb1. 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/6ad23ab2-a238-4f37-ad95-ac519a2b745b.json and https://artists.proofprofile.net/proofs/artist/6ad23ab2-a238-4f37-ad95-ac519a2b745b.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 0xfc188cdbcdea89c29c52056ffd0b27d5d00fddecef0ebe91ec5f797df7384bf0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTB72225520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536c263a017fa21fe8b7e4764457a4c15b83f23f507a23c1be456cee693d0b3c. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZTB72225522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27f4a383cf0b977b1e93d96c63ea1dd908727b7a3aef3718c0bced5c2fce67f. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZTB72225523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b38c8b7d40d9fae7ea74f1ef860057ce3351efaa53e3bc964a03ea77223207. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTB72225525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68dcbe18b682ad048df6648f90c8422a3f60089327ea4b4e32d0dfe4bf54319. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTB72225526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1946f4a49791df47bd0945cdd0bb392e2176c6955e545c155d91db3b5d1277. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZTB72225528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6299d49328be521405143e1f165750be1330172ec5935e5d544ebeee11eb65fa. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZTB72225529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cee5616bc77d18f7c0fb4700f1c62b2e520a75c0ecf1d419a8593145e7350c3. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZTB72225530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d2b15b8b2f625c9578231d6b19bec71d34a3f34dd786e88fa1971965d65f51. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZTB72225531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff16eb9fe0cb4414970e3862c9293ebbaedf83c194067c847c9ab00f2b81a40. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZTB72225533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0af9e0a5c3832e11aef948bf949dbe10befa9782d176705e4c9f61709cdccdf. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTB72225535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebeaff769db854dac8aa6d719e2c8b3ba67640f8bf434ee3c53ff7517231e37. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZTB72225536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21028665217020549fe68918d3c25999813a0166bf9fae6903379d7cec52780. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZTB72225538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463b1c4a25fd9d57944dcf653079212f43c465b4c4b4f4ead15778ae0cca0d6d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTB72225539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1003f78814000288da2aded3f4530f4e77bc61c4b40f8a716fa69d14f1a043b1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTB72225540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe990834b8d2cf8d7c79048c9d8e2e1ffdabca7a1669f20a6b94f3527b02cca1c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:47:42Z), 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/QZTB72225541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba874d4ecac0fc38b7e2907799fcdf0a15d66b8f0792e46b7bde2c453ca7e6fc. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTB72225542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0294f70b2ee9aa165fe7e842a570642a754ae2d7cad0bfccb060b3edbb4f2bbf. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZFYY2347580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb87f24ca96246f0dfc4c15f008ffb48641e393a065b1549ac793cee8b5840f0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZFYY2347582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27674f5dcf53739e8592bb7867cf29f1a06c079de84c0ec01e91bd62b7cbad82. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZFYY2347583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8835b20c2ef782ad55bfb547784146b1584ace0d98a01b3de9b4387527a71beb. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZFYY2347585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac2367388d5425b87d9301c676cefe2e729a8135a927e8f353104a2a209cb3c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZFYY2347586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5465fd0c758cc1edd6356e46a5ef26fd3cace6a33a8c84d85c5dd841196223a2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZFYY2347587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a3256ca3fc8d4bd059e5485af0ae59e4530cdb852f098c123ca007109e5882. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZFYY2347588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabeea3c755cdb1a55b06e11acf9d5316400bfce01b01ab931a86bcd6f608c50. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZFYY2347589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a62c464c68d7481b40726d87173ceb2f5dbc07574941cae457768b806105e2e. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/QZFYY2347590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082701c438b002a19f33ef92ba217c9a9883ea8263ddb72f96f970565d3780b8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZFYY2347591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaabe04e58a7fb99cdcde1c616f11965f42568a7918641c804082789226b866c. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZFYY2347592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fd098d68e9c60dc4c4bbe2fa199c5a2fbb9579d2ecfd21053578f964b94dd5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZFYY2347593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3516efcd4513549eec7d4d946b38203e2bb891ec0efb5792e56f4129737bf2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZFYY2347594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec046dbd77e4e609964a655f4ca6a7ec0d371e873b68f10850e33ff76ea30b4. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZFYY2347595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7235be555ca54e91ee958bd44c540784371084fc1085f25cc27571df554dc5d7. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZFYY2347596.