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 0x7e47f273f9d11c844c0acf858904e8b996dc328a18ad86d87e7449d0fc8deae7. 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/fec060ad-ee9d-412c-ba2b-cdea128703fb.json and https://artists.proofprofile.net/proofs/artist/fec060ad-ee9d-412c-ba2b-cdea128703fb.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 0x18ede9a764bb9ab819c6bd28202dc46169876c9b32d1fb570c8e9b49006ab059. 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/QZGLM2557641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c62796e6ad0676abbfb24ceea57796db5870b03ca5665e27a81becd6563b204. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZGLM2561843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfdab978fd930e7b1e57875eccee8e4f289e3e2d84b6f77612ad63a50b5548f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZGLS2518754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4a16ba04ebacb83ed5cadfdcfb1ced41f6c727624ec696b479eae3a6642704. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/QZGLS2535525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca09e335d75bd50366154f531aceb2f4dea1d0603cb77de92ae5fef8a3c7d7c6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTB22515496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11a82b74a6274b2157ae31f9334c7ac0b39beef3aa8c10f7984d6a27e778803. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZGLS2566618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aecf2965068d0c32d34649f5f2e572b85158a97ffec779e06922c2d74aa83c5. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZGLS2567264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c00c1a377ee62df1323a8a948ad795d156d8be87479763464f7d642d7603d3. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZMZ92509536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7355c3e424bc9c9cfed5b578636b7c86ed83a224e652942d0ffd644e75a2d583. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZNJV2514613.
Enjoy Life and Be Happy (Extended Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d56ef8ccd7fc8911d896c4fa77b6ce7a7310fb051d42959770842ccb662884a. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/QZTB22568351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8efb59bb790dcd66aee0be386bc552bce2798f7e1256daed24f3ad9a2a338b. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/QZYHJ2516904.
Enjoy Every Moment of Life (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b94fb3ac42340c22e97e8ef2c4c3dcc6d5cb3666654a3c9412e8c39c050caac. 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/QZTB22515503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0437a6334c0dcb686befa3f2801161cedc0b7de796f46880d3dc1475a88359. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZYHJ2547061.