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 0xf2d364484095731dee430c9948f7964df845eafd31f1b566388f57c59d41a9d7. 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/e7e28d09-6495-4ea6-b8c3-c9f228776c47.json and https://artists.proofprofile.net/proofs/artist/e7e28d09-6495-4ea6-b8c3-c9f228776c47.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 0xfdbe1b270a8ea17eb2c555c34c01ee2a70d79a985121fc11078842606bfbf3cf. 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/QZHNC2260245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb311986c10eb415fb34fa7682bd5b56fe09d5f182ce50c2c10f447f7623f4d50. 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/GX53U2060221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2c7f79d4e33cc79cd7111f880d4ebeb1accd76f9542eadc1a490e9bb79e767. 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/QZHN42431352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b5f5b1c4ce0c39e6832384a7f8a0d8328701a17bc771337c1d29ff3799e83c. 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/QZES72462965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc883cc7b71e03f4c1a5d64ee1f2b82416218ab494d06426396ac1036a2f949e1. 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/QZDA82435272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e19ccc85b83e2a98717f016eed81328b7123b40e7665161704c6e6d1800e74c. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZTB52335617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71205a34ca8e490773a7026e3aab3d969dbdac4698a6c080f657934816f03174. 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/QZTB42348072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e829c7d782fec9736727160654bae092a848c2727e820f4e41e11d627869929. 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/QZTB22333245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c07b2e5343f56d8f0e0078b9fd4c8d3e5cf30bc2d76b90be8739bee67788e0. 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/QZPLS2380071.
La Chimbita de Medellin - Medallo en RD Remix
La Chimbita de Medellin (Medallo en RD Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f762a642abff805c2293b326a918d3847e537f4f2ea11b7c0c27fc7c439f9a0. 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/QZHN82394167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed050491961f15ac4c09c0b582e32be7bb6450c9b052bc2fa38b7fc74d803d12. 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/QZRP42204603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfefd684531df7e5d5355f640c006d0ccef689d50a553e30d8256ae82ba5af8f8. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GX53U2030225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f0a88aa5db339f8a36ef9c4f81fba7b7ff8800d5ee708481cf2edaf9b26471. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GX3Q92339466.
Sinfonia 2012 - N.Rodriguez, Mike Moonnight & Mark F Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053d14ba637daa8e59a805632a2405f4d78ac7e8c0efa125b29aae4392141c36. 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/PTVI11200274.