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 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 0x3ce173e5347dd81486701b37512ebf9f600a2487c81d97823df8ca685106bc4c. 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/1cd0eccf-c8b6-49f1-bc89-9b65ed9518b5.json and https://artists.proofprofile.net/proofs/artist/1cd0eccf-c8b6-49f1-bc89-9b65ed9518b5.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 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 0x76e12d531ba26156820a96543497b873ed7e539f69926322b1d6bece108ee4f9. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USUYG1094576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c77c1aaaed6e1d19c33f27621b70bd87c8bdf84ffc5f55d0afe40d8bbbe559. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/USUYG1099352.
Don't See Em (feat. K CAMP & Coldway) - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665eee675c54716a5040e7c3866bacbe4a50d512e74d435bf97a71c7297747f0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFYX2184249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87314d2209d87dd33248aa888317a0b54113f84539e1debea52c42e5b8803bdb. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZES92167029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5ad93d971dbcd9cd3ac3b6b85e37fe5c5ceffc658e24920ae46061d0a976f2. 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/QZES82269637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9609e31b0400b4e31c16a200dfd433f951f5b84494b95b8effe1ab2a46ad5c. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZHN32324159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba177dc5190a4767f37bf39e4bf3a9829c9ff06d8a8792bc21d49d72bb97bd8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZTAX2301168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5dc6503291d5c09785a898299c8b23716e834d1070aba0f34da12b5bba68aac. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZK6F2447529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b51e68a12e972786a83479eb0786eaa93387b2e49235651162e9a9e052e5cee. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ7K2445663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7447a3affb03e9ce3ecbc905921a0918e0f89d4d8f6f9b750bed8092286330df. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZFZ22542785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fbbdc59b1aff21d403d891754abeccece39180461ec10cd8acce1bfcdc2cbf. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN32552834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe498a77ca3f67ce1c18231da31aefff8d2bbbd3e4912a3b90034f01bcd267f1d. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZNWQ2520425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183cba82d04e98dc763db5d023c206021ceab0df84c3dc79b1873d6d97187e10. 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/QZ8LD1711367.