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 0xa8185ddb0ec0c2b3e1dc068b3b1465c502b18de0cb8994cd5dc95239f18af489. Chain 2 (Bitcoin): anchored in block 953670 (2026-06-14T18:07:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/598f474b-164f-4b6b-92cf-efd2285d97e6.json and https://artists.proofprofile.net/proofs/artist/598f474b-164f-4b6b-92cf-efd2285d97e6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Thank You with You Have Been Good to Me
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 0xcfe41c4475eae708aa18e2bf27dd3ee9425b2c12d78ddc4cd201a1e0a1fee344. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/USCGJ1648508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fee758b85d5a57da1a468cd7519b11de3910a6e62a5e6b4e60b137658826ec. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USCGJ1648509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9d25df7670c2065856c8cfd695a0570a6dac44f513b2537b2ad56cee065652. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USCGJ1648510.
Sometimes It Takes a Mountain with Lord, I Believe in You (feat. Tabitha Fair & Bridgette Tomlin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73bd92bdfba4f86a166c88b2e6f7853780ed02c6e1d60a623c35115983bd3325. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USCGJ1648511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ece589ae264042e13716f92558937247829dbe237237dc271d951fd251b9f8c. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USCGJ1648512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80c9611688d765747bc3dfc10914e533c9926503da858074ef5846a39c676a3. 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/USCGJ1648513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3692934db0d21efa2b743d6415696a6b923f59015af1563af6f9c828f5c6d2a3. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USCGJ1648514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2685aad34416d8d3f2748a3b6ba439f786ed7a8901fcf19084b5c451bc9c8b49. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USCGJ1648515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93842b4f257642d7d31b664de9c2edb03b1193f7841e15a21c3f64fcc6ff97f0. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USCGJ1648516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f25efa8805e0e2463f2f062fb3e6aa136096cc59675e85ae6740bf4afedca90. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/USCGJ1648517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d142dc254f0c7ce971b057cddd86cb92b0014a71a8813e83ed6b5c89ec5cfb. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/USHM92112362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7b098e8d824c19b291d9b66aff6ffebc4fcf3f4881076e33ec6f790db5b41a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USL4Q2489558.