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 0x92ebf5ab27a4f69d263a01d6ed7401e4c0823b04c09c5a705cf835e400241184. 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/8bb7cfaf-03c4-445d-9ea6-bb29bb65b592.json and https://artists.proofprofile.net/proofs/artist/8bb7cfaf-03c4-445d-9ea6-bb29bb65b592.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fall in Love : MMXVIII : Lo-Hop Anthology
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 0x9f4b9148ca78448e3995a355c523d5de8ebf299ef7870335b727668e76fa3ec4. 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/UST8K1871747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1a97262019e78474156763122d6572eda6b5413b9b0cd7ea04a207c2fcac52. 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/UST8K1871750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ad7781797e5740c644b1b033a0bea20e40c9c3f97468c7e5ee76a7b5348ed9. 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/UST8K1871753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23dd25d6bfa35fff330db0a338ef68569c55272b3ace1545f19c9eb92083bd7f. 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/UST8K1871731.
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 0x9033ceb1ea2b040468451b58a86fc800f34a2072f1902fdce6c81980d2497e0c. 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/UST8K1871732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18bd1adc5c33a68da970cdd1b9596b1970a115b8f06bdd90236ece5333ae9983. 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/USANG2078419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644630463fcb25c0294c204701a34129ef46bb47716f40528cb98419571d72b3. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/UST8K1871748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429ceae69b065860e15cd263baad61024ad563723f846fcbba720373d48b6e7a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/UST8K1871751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa1597b19b0c5eb40e767763b8e1f5b1a49d8f5cdf384a46873f0ec3d4a0a92. 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/ATUM42100219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6df92b545fbf0651a8a481770748ee19c36dc611f3e3834ef415d672a4d730a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ATUM42100211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f8b046b35c0640a663884bf3f3d9a9c6b4cb15d9b44dc30700cf3f04ccdbfd. 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/ATUM42100221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5534bafea333a535b31e8474485cf3cf568853693301e9de74eac317448b643f. 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/ATUM42100198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df8308618d663e5c014e71e04a23c830e53055c9202c826a442a5ee4ccafffb. 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/ATUM42100217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4997654a60edfb9acb4d1f249d735b88f3401e8142a801df3c677396d31581. 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/ATUM42100220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032e1b791564255e4162a9fd33ae9a55ba90770e30a21bd2eb7399568685f7cb. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ATUM42100172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99f6776613cabb1b027f74c67249e213b7457b1abf44afe1d3013623565567f. 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/ATUM42100205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d122e06b99a21ad2cb79a868bb4b91d27ce729265c69445c91d728f3a9e4d25. 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/ATUM42100210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb67c6258b1a9ea4fc0f896edf840c7d0da811b0a96ca0582a0126654ab3bd0a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ATUM42100200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a705f68101801490722a50fb68a779e05265c6a69c75118a657e99222d98018. 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/ATUM42100213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d445e7f53deddeba05d6efa9beea26b13b3343b300c96d70ee002a165ce033. 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/ATUM42100204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26a0970587231d0d72e127f715c7232a27f63950f31f7f4c7243096788d7e65. 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/ATUM42100216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47681cc94145e1f68b37063f73741ff523ab4b1c11f61c839ef64bbaa6896426. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ATUM42100223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225035e6fb06b8aa5870ed6571245aea2f4c5c65416fb61050e1776850956289. 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/ATUM42100202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d61066c7303947ec042cb27f2970237bd04547ecf7906508276428f0fea6c3. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ATUM42100208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3f95da99f56a4a489a8028998afcf9bf5f4787c9c0b653db3c811fe0adba11. 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/ATUM42100207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676300adfab840e0608856b7fdf862947d0793f4c118b8aef36d00ce4013b343. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ATUM42100214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338c5a09e08f390d34400e888e0f077eff5b0e2304819b674239351993f7086b. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/ATUM42100203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69148ca4c9eb48ab0586101a5aa9636a437ed4fcc4acd7a6f9121bdcfbfd5918. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ATUM42100218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb3a2efa6ee25eba1f1b9a97cbca24f6652034f9e1eb4b0833651847a948ec9. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/ATUM42100222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574441dd3c1978184af3eef318dcc79f37367f037344339b6219d138f97bfc03. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/ATUM42100209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23098822462fa5f6ca66af744e3227a23dcc4c9f281655d33cfb701f0add283a. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ATUM42100206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4061b87ce03e947f869e2402dd232ce585cd89d83d631efd89f51fe1b26c2205. 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/ATUM42100201.