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 0xca7f7f786e5846c8ceb153dd97faed755c53e869407a21cd883760ee33c681d8. 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/3cf7e307-2028-4b26-affe-90a138af1f1c.json and https://artists.proofprofile.net/proofs/artist/3cf7e307-2028-4b26-affe-90a138af1f1c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
No Exit (The Amazing Digital Circus Song)
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 0xfa28df69bb1afdb9453224b927c104d1167d700af155ba490a3f92ec84e5d237. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZDA42498639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f8be5af42f7c70eaebc9220c0b15e8bb8b0e5ec581c288e01a4484b480eb25. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN62463696.
"KINGDOM COME" | The Amazing Digital Chess Song
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400f0ef26f71a7a3fe25f8a94041294ffa75549d209de8da981f66c92e820cab. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6F2476763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aaa9cf74e636fa11ae6ab00572067af67a87e5afe76546af67a36ebfde0145f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTB72495157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca7314946471956ee218434126aadb81f0b2c46c89043bdc5b31182e0ae9636. 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/QZTB72495158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c2b9fca6d81f877e9ad7dbe586546c14ae9bca99fa3f598210c5dc9d6d5831. 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/QZK6N2451366.
King Of All Seeing Eyes (The Amazing Digital Circus Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857693a1d4e49d936ae07ec0cb36550cd9d455b06735bc3609ffd82f593daa3b. 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/QZK6G2438179.
We're Gonna Make It (Content Warning Song)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fe8dd548c1ba801a3609c5cfdd0db8f20af8f0ac481978c55f4a6595037882. 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/QZK6L2403251.
We're Gonna Make It - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3bc921bf44c2777fa9e5f2dfd4c3c3235afc0a4e8cc4eaaff25feaedc6efbef. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/QZK6L2403252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3775bde77c6cb5fe786263953b93ecd3f5b467602badf760f10530531d159aef. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN92409208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04aa441ca9f07fbf02affc88c045866d80162571f747c4372d4b2cf36b7fcb8. 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/QZTBD2316119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f416e3be65163357c58c68f7905120f0b160bfc30e42f9560c2c93ccc3fb9d8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTB92404549.
ABSOLUTE (Murder Drones Song) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57de373439c241a4499627eddd464e1cedbbe99cbc25de3dfe0c4238b738a747. 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/QZTB92404550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60c9f08fcb8a1443d603772d4a88d41272d951a3b5a5920a9fe3392af44ed9b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZES92555049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe368a0daf0e02c31485e7e9f7ff197c3aa668325a3ba5330399bf68cedb3c9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZPEW2456132.
This Is Halloween (from "Kingdom Hearts")
XIII Cheers for Sweet Revenge: Kingdom Hearts Goes Emo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2009365f7a53c3e8b1cc8cd5d86046aa5b47399f833301b0c8777b1d06bb32f. 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/QZPJ32344857.