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 0x85ead4c824ec05eb27d5d92837766338c5caa0dba2aaa4317d20edaf959adc38. 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/9028c0d9-572f-42b3-b663-adfa495741f1.json and https://artists.proofprofile.net/proofs/artist/9028c0d9-572f-42b3-b663-adfa495741f1.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 0xa0c631e7b0235bc2b6c692974c549bf3400abbc026a9589139a5998b712afe26. 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/UKZGC2407524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64396ad894f2cd3c8b496d1da1a88fee0a19210d63f975694a516f5e18de0af3. 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/UKZGC2407522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f5e53ba544b15e8c0f983a153d096da82d74bd9d6c93282e1ad60f8a237a4e. 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/UKZGC2407518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b79d19fb06a4cab24a62e5d4d733d43526cbb81bda91c9e5ea7c967f113186. 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/UKZGC2407515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52e491d6ce18ad5441f58a4e4da0d14a81a23ef73b891139ba4c4e59da8069a. 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/UKZGC2407511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee69ec4cfe73c3e1b489412d43c76a957468faba103ad16dbf57dd3e864d802. 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/UKZGC2407509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f4e6301638b8aea1026ca887152101cd885e6e2205c3524c78c1d9664c2ab9. 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/UKZGC2407507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e72133a7acb1b27fb75322d71c71452878dbba36e0f92c8ad8a3ecaf6fa453. 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/UKZGC2407508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ee5d83e741bb061e3a206b86e1cd53bfaeeac18cf597705f0f1129b1cae66d. 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/UKZGC2407506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b46777618fc0d7c7791a6ee32ca599b7320789b565a35244727db8c8b35b34c. 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/UKZGC2407504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8803b32072fdc8aec12012e444de4c80210c688c40ee5198c27e531ab197d4a0. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/UKZGC2407499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66700d940ea63d1e80274092343692ae762164a429453e5f08d1fd65b542a4f. 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/UKZGC2407500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3fda377f5890cfd66097110fccddc5d4198651f0bda37834c61b5ddaaf60578. 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/UKZGC2407496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315d1853486702d017b49057792f94740786ec98993045ee507063d43f3cfc38. 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/UKZGC2405677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a44d8f7a0774280c96f431c565b9a3be8c4927c19435aa37d62647b2851e214. 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/UKZGC2405679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b31c388f82a52298c0b81d6be51e2767d38de4e9ebcddd98f107c6ec6845b5. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/UKZGC2405682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b026ffc52728d5d76270cf013bc7adbb65047a2e4ff1aa679a98428b29cc75. 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/UKZGC2405685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924b14989385cef82740bb5f62cdd125eb9dd766bd4cb94b636a8ab44b4f651c. 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/UKZGC2405689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63478ccb422ad0b3ea78c5c09f6a7a2419feccc389846fee2900fd84849ad326. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKZGC2405692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82ccf7d2eda01c62f739c430e64ccff30f106d13af190abd83314953567ab80. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKZGC2405694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f444644d973ca99c1f2a4779a26fb1d9e4bc1f780d736ab5574cbb0fc14c004. 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/UKZGC2309130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ed6ab52830e7b62c458da743879fe98e0bfb8e583c5a0a74744f0c32ea7a70. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/UKZGC2304717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c34bc0c88bc4849eb2e20f2f191998c760f5172b1ff1f19c6c379746d252ee. 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/UKZGC2301547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4521a3425c4572d7b578342d841d16e9857985a3cffabea675e042ef6680bdf. 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/UKZGC2300475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4f1cabd913a3d8a09a0a62bd4080ccd0a0ba26c01c64f15c3ca2c757209e23. 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/UKZGC2203421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89dc36e28c68186d40a6e7004cfadb525e46ea06ed5b0d85800add6770a325fe. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/UKZGC2203408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddf205bd9a5dd077d1cdde85487cc217451da0b06af4876e3dd17b5adee2e19. 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/UKZGC2202103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ed18173d5a7379e6d3a0fece95fbe49696bc8dd38e69888d90ceed810a5c5c. 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/QZMHN2207002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5895ae6967a24a013be8402023e674d1d26946b8ca4ba33d25d5c8580b8d00cf. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZS642184585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a14dc582506053dcddcc179abaa2c7097fe59c5084641ba9acecc42fe6a6da. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZS652111814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7407b97668726aaaf1da9caa17c065ee5f2e7e67847c81c41eaf73d3772e9d3. 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/QZS642188746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1841c81a0c06e7ac7959def504d26acf0d1095d0826f7e0980880af0702597d5. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QZS632185851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea3905bd0a888a6395dc5999aacd21c3373c98ededce67152809ec7d1369c2a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZMHK2051008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ed6ab52830e7b62c458da743879fe98e0bfb8e583c5a0a74744f0c32ea7a70. 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/UKZGC2304717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89dc36e28c68186d40a6e7004cfadb525e46ea06ed5b0d85800add6770a325fe. 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/UKZGC2203408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4f1cabd913a3d8a09a0a62bd4080ccd0a0ba26c01c64f15c3ca2c757209e23. 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/UKZGC2203421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5895ae6967a24a013be8402023e674d1d26946b8ca4ba33d25d5c8580b8d00cf. 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/QZS642184585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddf205bd9a5dd077d1cdde85487cc217451da0b06af4876e3dd17b5adee2e19. 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/UKZGC2202103.