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 0xd0bfceac06a87c316426852ab06747444f631c020c75ebd0c012fccdd86ed126. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5a248ec0-7f85-46b3-947a-bf067971853a.json and https://artists.proofprofile.net/proofs/artist/5a248ec0-7f85-46b3-947a-bf067971853a.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 0x24bcec2a9283043f5ba568bb2e9cd53e33a5595853308ad0f1620f01e3adcb4f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZFYZ2528145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d674c5fc88d845f57c60fdbc09b83a69cd4d09170b0b3ff57d0344937186dc4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZFYZ2528147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9789151c22f856ad7de7129154d843dba5df5fb8bb9ffafba8a2cbeff079d19. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZFYY2540166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a000e336f9535a622084e3084683937c3d9e84648165824e7e3a3c051ddab2b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZFYY2537513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609a8fa38ca23f34fee0cea84a112eadacf8632a99ae28d905cd4d6b56ff0080. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZFYY2537553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a000e336f9535a622084e3084683937c3d9e84648165824e7e3a3c051ddab2b. 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/QZFYY2537513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609a8fa38ca23f34fee0cea84a112eadacf8632a99ae28d905cd4d6b56ff0080. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZFYY2537553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed57a2742daab2dcf8a0a2402dce04ec7deb2949efa8e4dd597a14e84ec86642. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZFYY2592642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c15da94a08964fcf392c99c2e4d305ced6da357ba7c9aa7a0afeabc60a8917. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:01:52Z), 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/QZFYY2592636.
92 to 95 Connection: Brothers For Life, Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68a2c796373afbac7b7bf251950a7090ff6030fac5d923fb323b61bf6f90fcf. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZFYY2592637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440cfa225450010a6a193034fee95175ed7d5f87106c39f63b5a6a4619b6a052. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:52:21Z), 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/QZFYY2592638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6306301b0f483a807c2a6321bf620a2888a53d127504d101965fbd5e98d065cd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZFYY2592640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14bbe3337c20dfacc2baed9c611537bf2a6915817c1dbf6e2983682c12d2272. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:28:58Z), 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/QZFYY2592641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0251b4e02b1cf9c072ef80f83ee3324d8d7b1a0d803e979e2424348fd5bb57. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:25:32Z), 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/QZFYY2592643.
92 to 95 Connection: Brothers For Life, Pt. 1(Instrumentals)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02022d27ef4fc892d389bf560be82709e5d8219f715a61eb26e8b157280af02. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZFYY2550576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216705a4de1f0459b8a0a3015d33645203a498ef86d75bdab8c52806d901b5ea. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZFYY2550578.
Soul's Broken-heart(Interlude) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f240d8b29db501e9ca81e7b741244f772871f10c4448cbfb3295fec7fdd8873. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T16:00:14Z), 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/QZFYY2550580.