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 0xcdf0841a7f72282ce32085bbb8f375d1cc24ed9dcdc02f6eb4df4f718950a762. 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/ec13b735-c95f-41f9-9376-b6b7a087d9e0.json and https://artists.proofprofile.net/proofs/artist/ec13b735-c95f-41f9-9376-b6b7a087d9e0.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 0x37f9fc031f3b0d2ef85b490190d4be16f1106bfcab8fa3c5cbf6f8f62cf0b8a9. 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/UKXN22458459.
Won't Forget You - All Stars MC Mix x Sluggy Beats
Won't Forget You (All Stars MC Mix x Sluggy Beats)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09251d9c68a4fa75d8cb6e2f0a9d5b1af1dbd0f99f69129aa551d978d3b5a500. 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/GBUM72311190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f31074a88bd23abd50bc6c258217afecbd0a065823c59cfce54b175d1258082. 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/GBUM72311270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0617d0897066e786ffe8b711fde112c56c8b0226b822c881ef6f8ca5b2876028. 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/TCAIL2450563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219b8851ccc7cfd82ecd225012a22868fb0192727920cb8e0f10d4ed1b0b0eea. 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/FRX872374522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06482f7d2d00d296f78bd8488d83d2a4e03eb35b50798e5497fed4e272ff11d2. 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/DGA052371112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8846438b64e833e1262dccd6e2dd649d3da5f0e407bfe5517e91040b19ac66b. 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/DGA062370445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c07f68265ca8ff445a2620ede969cae7b3634e58cd843468f8ab7d391acd5b0. 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/DGA062370446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06482f7d2d00d296f78bd8488d83d2a4e03eb35b50798e5497fed4e272ff11d2. 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/DGA052371112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219b8851ccc7cfd82ecd225012a22868fb0192727920cb8e0f10d4ed1b0b0eea. 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/FRX872374522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219b8851ccc7cfd82ecd225012a22868fb0192727920cb8e0f10d4ed1b0b0eea. 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/FRX872374522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de30e0b03360267ac56dab5ac8c20dd356ddf24fec9a00dcaf9815c16557a6b. 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/FR96X2264659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb17b552183196fa846afa7efc6b3cd91fd36cf754ea6e73457efb741928cc5. 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/FRX282283699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a1686b15113bf868647a9bb48955d6994ac4aeb048258bc12216dfc1fe4b4b. 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/FRX762207085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098558b26e7a2fc8e1cab010dddbf7049d76cfbf355867641eae3614be167017. 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/FRX762207086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f99b7ba305d7e117424905773c55dde49605f5d6e8c7a520ada4e28fe1b1bef. 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/FRX762207087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e5debd1411ac98caed911b1ad72e2c1ebc723e2c9c55b7870102974ea0ddd3. 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/FRX762207088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df401091d44aaf556c42289f17220ba717c88d0268d93b3f1e729896e4d7852. 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/SE5752498807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b29777a1ff7d90f5559ba27ccea6b0c38613da0258d636e62cec1e11bb934f. 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/DGA072389157.
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