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 0x89906f54d988fda788e91733181bf8dfa07ef020c27eb8267c1d3e5722392fd6. 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/fd765f01-ee3f-4fcf-b37f-5ac308fcfc3f.json and https://artists.proofprofile.net/proofs/artist/fd765f01-ee3f-4fcf-b37f-5ac308fcfc3f.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 0xc3b872cad0fb96b697d7cdd3af2127fb2c2c497533f2feaae66acd0c0c01cd18. 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/QZES82321619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ce722a79f30b0298212363178d15895e5e7cce142981f4c4862de953d165e9. 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/QZRP52497962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbfbe4b746d09d358943ee3d9ee5d6174ab4933107f22fc7835940c7a320e87. 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/QZRP52497963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30183a908b3651119da46c0db33eb036cf4554992782fb9384c2b153dd76ffa. 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/QZRP52497964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a827151b046e214834772e60f9ae22477eea49b6da30ba9b1a0de14157d51f7. 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/QZRP52497965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa155cf9c4c1cba379c7785795e9ea38a9e8a6dcdb0142d0c9c4d542d10dc8ea. 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/QZRP52497966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640daf44aa7b05310706e24c6ca7c5852d93c115231ef3dfc5ca3fb384fc37b9. 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/QZRP52497967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3217f9bf54e558c2a36102e88cddccd867d614251eddb0bedfdae4d2acb985. 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/QZRP52497968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4787b5eb5ee2364cdce11af4c079fe6eee330d66f78154a0c88aab564bba6e. 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/QZRP52497969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8af0f1d606259ca10711a741635a564958f0d4121d34a0c1b2e7034ab324c0. 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/QZRP52497970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ad7602f6ff504b5cf4c5958c48f75806920d84ae0f3935a6bc588738c3847a. 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/QZRP52497971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd910bfe73039e8cacf7b156c63f9469cfc562fdf298da0ba13c042e8f8746a63. 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/QZRP52497972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcadd5de8feec4bb9e1d504f968d1ba74630ab3af219c9441686ee93ac482300. 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/QZK6Q2343358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2fff74889c53dce709bdff761deef7027fd1b557765cdf0bf96a02778f207c. 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/QZHN42495789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695ab972a3b812d8c0e13c52f67b08a5e61a97c1922107a6002c2cce9127e135. 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/QZWFQ2307842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5db51651ce67038af3c4578cbefd93b3fd12c28b98697dd96c2a2baf5a4a19. 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/QZTB62320233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e9970cda26c7555877266c6409658223a77a62a946b58f6d1663f5403a608e. 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/QZNWU2365811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad006954c7238e69a416cdebd263b797b3c47a0be5fa956844deb547975df8b. 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/QZHN62347921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9486b17922484dd5471dcddbf61fd501ab5ec9a8b81d9e48d432f2258b93519a. 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/QZES52364595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761bc6123f53699a5e2906a9a2c20277f1d54fe9b5f1019c2190cdeae9960176. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTB92212791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339e4fab32777265b7d10ec97f75467ddbfc08ae384ce4310fdbd21d167491de. 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/QZNWX2242787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626f0ee1aa86e118c813ac61c9d4132adb32fad10192e44d545ab16da7c32aaf. 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/QZNWX2242789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c89beae67aac8f2fb90a27d615b21f744605dc7030aa1c794963906cd56871. 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/QZK6K2290607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d5682252c10c389503415035275ea797513b3d8bef03242897e1962cf2208c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZK6K2287785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f59baa4a41bcfbc1dd6255b1b124955c33cb21df387615f82535bb92f6e9eeb. 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/QZHN72234675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa17d9cff0f18f6cc506e92967d584aad7681de8589f7ec9354bfd845394214a. 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/QZRP52164002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d6adf110d7cd84cf552bb1de207e1ed55fe57b1b27b00bd1babdb5fdac9e7e. 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/QZFZ22486116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9060b475be3fc6695468842d9e22d1637679db3ba0e62e145e2b7d400aa21cdb. 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/QZFZ22486117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64247093fbdf00b0e1334473ad3fad06b44612cfe9a88aeaae77069a855fd3f4. 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/QZFZ22486122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655a295ce819eaf85479a55fe08d96602310589d1e542536330ee3b5288580e8. 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/QZFZ22486123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4638fbb10eb66fd857bf73fa2a9467643b7bcf247be591a01f1927c0c32a0591. 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/QZTAY2280725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2771a81c99b26afbfb4693d87440eee59875c17ecbe5d1e7962a9ae4e2d696. 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/QZTB22233819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fdfcddbf3d8c8daa6ddae552a8deab20569309f443424f80dce105a48b9241. 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/QZTB22233820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3cb22bf9a7969213cf6b86add1095c53ae576af24050db99e23f71af610ef2. 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/QZTB22233823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3f0c16ab90118a8fef9ec826c354880383687091a0322f641224462530e198. 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/QZTAY2280735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12be4c7471acad1876149f7b331eb19cb0ad47bcb4ee53ca1a48e6122fb7e895. 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/QZTB22233825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628c7752fc044850c61120d519a5e7febba9c47e8f597ab7de8506d2c79657b3. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZTB22233826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975cb555667629716a5a9d6b466de117d1883a1ef13daa515e7385b2f7023fbf. 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/QZTB62271996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628394f22eb734e73d9d757ca488b0994664a01861da41b8a6cdf570c0a91c6d. 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/QZTBA2457098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaaec66fc5009573b1f13a2aceaa648e80ba5dfe14556dfefb5835fe104ca77f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNW72271041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f20edd944ef366f546139bfd776c29c6bf404a46afc047f1c381f00963c918. 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/QZNWV2272720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5135dd9c7d6c9bb72feaf524e81498ae076acf37d74885525cf4fd057393df97. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZMHP2351560.