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 0x2b3803bb4b23c498179c3039b49cefa78d5149c2426daf2c91bcdf74906bf2b8. 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/49a12494-1d2c-49c9-a008-883ec4374513.json and https://artists.proofprofile.net/proofs/artist/49a12494-1d2c-49c9-a008-883ec4374513.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 0x7e9ddce928e8865f3961956dab7bfefd62a33c0cbc88c97b280131dec48086ec. 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/ES71G2334873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a742a3c6cac1d4c89f4d3e372b2ccf8535d06ec951cf54df99d229c917be6b7. 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/QZMZ92428363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20153082bff74ddf08fdfd0282738ae432d3fa3eae3b6e85207dd44bf2395aca. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZK6P2473806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039b94141f8b082cf24ffc8e3e2ced05a1fe46fd659cb0224e5506e51df6ac9e. 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/QZES62430643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f10a6666bbea740c9f007dab86df40135dc8a8093a0fc876c8b5a731370088. 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/QZES62430644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c38d89491036594b10cf4f2eb05bbfa835828f1a91e271602ce7e403bee1c59. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZES62430645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1588312b13a1e4462d06514b94ea942053e1ae1315f8e2defa9cf926fa93617f. 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/QZES62430646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa438120ca4c6aeb75d2b8ff31dcce1a485bc594c8ea5881f25f2663eff457b. 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/QZES62430648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7bece52f08f7559aaef9c3cdf589f64d99fbabce6a327f269b2d2d31b967b4. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZES62430649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff765cf9611bf5e727d22cab1080ddfb78db79fbd6e8ab4fc87521d0961978b. 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/QZES62430650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8424ef58e24ad6860de6a66586a4faefc73a628b4a3e998cf6d341f16e5069. 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/QZNWV2403780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2512611903f201902aa71a807a1b29dea10964e053a45747a27cb9cffd649b. 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/QZTB52366912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045333e840c3fd3aeb7c3401ece3fc2584ad042c79434d16964405d8e525893b. 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/QZTB52366915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca59ea70ecbcc2aa3e9e6a66a8f928be1975fde34d224baf7b4f954182e48488. 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/QZTB52366919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6060ad30558d3254d8288238f3954cf4d19e095893e036e54373b9830abac619. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZTB52366920.
Maliciosa - Kaelonthebeat & Young molly Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cba433a2be3e87b4394610ad9c3060ac84fb26098129cb3c8e5bb3d64b8d1ac. 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/QZTBA2431529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba2f21cd26d2425da039034f96794cff3d1f237879bd7a4c8782ddcb767c716. 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/QZNWX2369058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c25bb2d0e054bb114e576910ffe5aee7a84b0eb4110ccd78161dd6aab491cd. 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/QZWFM2423693.