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 0xf8954374ab6119791d1e3e72bc983ae49c3615881540ca968bbbe0599b632319. 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/89be51e4-933c-464b-b74e-f3074736d907.json and https://artists.proofprofile.net/proofs/artist/89be51e4-933c-464b-b74e-f3074736d907.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 0xc89cd6b0f70e4d6d0ba200733998980cbb050582bb768e0f8e48c11aa07de2a5. 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/QZK6Q2462520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c723b5841d7a8918fddf6e22fdac02e97764e19205f2fb590b59fa31cb6e02. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZK6Q2462521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9927ed601a01b01d868a94bb3a5383be547f7c92451409da51fce5c9eb234b07. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZK6Q2462522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fa573f04b8d250abd19218ce0a70e0e592ba189584167c4dffb17799f8b9d2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZK6Q2462523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdb49185ee5a847a48f88fe317af46f7d31c3411a5292818e62e915e23d411a. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/QZK6Q2462524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ca450e4881d81ac08f2e944e1d2277686f12b142909d8aab0ab4a411361129. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/AUMEV2470334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf270784971deb85e13511539eeeb30ccd935857a874a6166f1c580e985b06d. 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/AUMEV2470336.
ACE ILLY Presents: FATHER OF ALL TRAPPERS.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a0b6638bb577f40345b18c972018cc75cdc658a6822a41ea318399c463ee51. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZWFV2451156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a0b6638bb577f40345b18c972018cc75cdc658a6822a41ea318399c463ee51. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QZWFV2451156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89ce49f5a14c758fb6d4c5e0db0b82c7faf5599f47646ec9f633387051a5512. 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/QZES62538774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469cd11e68d52ac47ff57f41016e7a44cf8e44e6dd2a3624639b58f636ebe5ea. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZES62538776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99437c1757777fc8b41efb80346b0fef0fa242c3b62523d321f6dafc49810ef2. 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/QZTB92574125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2797063632f29d106a71a34aa0ccd95a98010cfc278c6207d4556b3e8dc1ae1. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/QZTB92574126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cc92110225f09517f9f67281a41f77b02e06181ce00eedb84ea0a2ec13b2bc. 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/QZTB92574127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03cbb3a1e11d56bcd7467998a5de1530808e8a8436aee897fdc25ee11e49196. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZTB92574128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe555acadc17119cc11949755e2d276cd1035e0471490d658a53975fa842d0341. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZTB92574129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3472c7a565ec7387caa3031ce0f68f200dd7a0b21e8c135d27da81a755ce87. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZZ7U2500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a0b6638bb577f40345b18c972018cc75cdc658a6822a41ea318399c463ee51. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QZWFV2451156.