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 0x1b5bac4cf68d83e35a7df2940ef60d9bca75402872d4e6cbc0fa52167cc1858b. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb441dcd-1aae-4eee-8310-cd8cc1e1399d.json and https://artists.proofprofile.net/proofs/artist/cb441dcd-1aae-4eee-8310-cd8cc1e1399d.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 0x37804df61e8822d8841bbbda50e57ad4eac438e3df4eeac9ed0946a731bcb776. 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/USUYG1305297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285ed44e1116d49bbfb761b91ba6f86c187f4bca7a65a8ea19bc1d6aa9b0c4cc. 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/USUYG1305298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb150e017876bf3814df49c06ac10071e72f509093431dbc1a25174c92213e40d. 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/USUYG1305303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5ec16bdcd38a99d23f35a42f993c43a189aea4cf1771c5ecb01ba1667bad7a. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USUYG1305294.
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 0xa227064e01fb7fb34ff9ad71ea6f077a57ceb282e929ee0758d3f08f56f0a243. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USUYG1305296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfd11dc49cbabed8d9dc9431b83d0535462b07e9aa39699f56b116aa645c6b9. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USUYG1305299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6382b4742684ee85afee08f71e424eecdad3036ec8553820e7bf11674d639d9e. 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/USUYG1305301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a6e78b961d9969f26f55c9bc867b8ce4550184698f86ddb398f286642e1f6c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USUYG1305302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a6d782f4b3314e37e794ce1e0335cd8d72229d8da56c7f6ebea52fc884e49a. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/USUYG1305306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6f95241e8af3bb77035d13f7a7b67548c9286df44d29b3c90572e429374101. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USUYG1305307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c3aca1bb69eb16c49a9002bf8571feb2f79abc1b5d930167314f711f5786ab. 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/USUYG1305342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5ea3bcb04ad59195665e518a0171d1782706f91b4137783c34b17386f1c966. 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/USUYG1305343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7dd4845187daddd92944a2f137f5808b974fea1ad25d5cef5e26a6a1c69dd7. 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/USUYG1305345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab7f2305bd01e188d41cf704d7f36e4597adcff965a324cb436d2dfbed5ce4a. 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/USUYG1305355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403bb1f9fa5a1f2ac13f596ec9fa9565e64f507aeffd4dd747808a0b592d2ea5. 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/USUYG1305349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024fd1cffcfc166a99c28924589e20478cfa91eb5c76702f338ba5e5c28d888e. 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/USUYG1305350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a257d156a5caf9e44603227b5e147aa0ec9681baa68c52a5ee7d73212a075cb. 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/USUYG1305354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04199a9861ae0672767b0804026c453fab6591a07c9998d68bbfd40c5274f31. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USUYG1305341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc3603301361f12991dedd75a0874a2d902e6a5825863e51e09f826b733de3a. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USUYG1305344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4812e078925cc4fdc0ba419a2eb5a22ecf7a779153fd474fca7112dcbf8fde. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USUYG1305346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbb1a53debc62efa31bba819d1133314e49caa5a1db1ce2b6571357c249f74f. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USUYG1305348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94bc38d73c37d582e77e28b82b032e805416995e07306af872aeb4432cb1af8. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/USUYG1305351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e4a146737538ec18aae59bb8dad20a09bb2a50138eb44b7d19092c9e6ba628. 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/USUYG1305352.
All Written (feat. Georgia Anne Muldrow)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76684cd9679244e33141f43cb8935e5fc88d1d8cd7ebe9b08a5d7d01916f630e. 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/USUYG1318603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562ea28b2287ee6d9c19f86be6b0c2574b3419cb99a8769bb5a975646e5f255c. 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/USQY50958447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a64073025aefe52399ae4a243d654c875e4d47059f62df75dade059e5c4a18a. 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/USQY50958453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cadb952247e2a0f608c86cd572bcf9c078ef78ee3b768c7aa21b8161b40048b. 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/USQY50958455.