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 0xcf0d048d656751a33593b083e6628cd00e5b1ac7aa196ab476075d318c07473f. 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/781d2ac3-4954-4088-96b4-1b66021f981d.json and https://artists.proofprofile.net/proofs/artist/781d2ac3-4954-4088-96b4-1b66021f981d.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 0x7d3e09cd781a807e40544e29da591cd70c8dfdd6852d6d246d89b775e5ab9b82. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZ5FN1803218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef698be309a5015f453b714b0d4d830ede86a6aad2c95f79eb45708d5589ab0e. 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/QZ5FN1803219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd7ca966e4a667091b238713d9cc79f6fb1b8f6238d92c3174b8f0ef750a724. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T17:34:55Z), 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/QZ5FN1803220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ecde6353a53e74b49d93c4ab0640c75e68c381808777e339a9fc753bebbc1f. Chain 2 (Bitcoin): anchored in block 957730 (2026-07-12T16:41:26Z), 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/GX3Q92179712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa6888cd83de16886795f2c7954008084738c0c764f57d8f35c8f3f57ea9ada. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/GX3Q92179713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46177f6aa236665ed93c51cffd0b6ce9310575b790088f6ea6cae224aba4cc47. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/GX3Q92179711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2b952aa7c507eb4dbe19f459b48e25d4e5d6625a79f45216ce36652af518d5. 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/GX3Q92179714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af412e67bd9a2661df11ab3e7514974512d77d101baea200cea25e75a5ea140. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GX3Q92179710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe1f8413599f0eb11a1340184d1ac7b76d29e4fb550278ed65d0ea36458df47. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/UKXN21916836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e49ef9ca0fbae73d1fcd2467fa65fc7814ad5b3c890d3dd5a06392a82bdfba. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/GX53U2067771.
Marvel Avengers Theme (Epic Metal Version)
Marvel Avengers Theme - Epic Metal Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1327fb5d92e1b64e840d06e29752926785f9972524f80e43ccc42e5db65383. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBLFP2208970.
The Only Thing They Fear Is You - Epic Metal Cover
Elden Ring Main Theme (Epic Metal Cover)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e253414f68cd4724c5709dd41ad6e94d981fa51129bf72fb061627bdfcf5586. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/UKXN22243867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ab7d76d74b1a254ee405f245df5f43b60a84f353253c0c9bcd0f363f60dae0. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/GX3Q92205168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12a55b30cf8c131f2925309d06f1813398dddd196627e04cf304e149f4525b5. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:31:07Z), 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/GX3Q92328672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4b92c921d3e9b693cda9548dd688734a742e7fa83d83fbd54f69fbcd44c129. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GX3Q92342566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e8ba5f15347def3b16cd2281f1ecebeed8d6a975aeecbd7a4c7f7b315ff3fb. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/GX3Q92367644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9183c1ef248457007d81a1a08ed016040f50dbbfc849a369adba2af6480a04d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GX3Q92382070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1052bc6f942400f992dfb4b450920cf6a667417b84e2deaf3ba26b3795959920. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/UKXN22320808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a17b7656eb7df4cfa96e4f3f75e7a5b6623d4a036035e257d550f7db66a25f6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/UKXN22369425.
Divine Beast Dancing Lion - Elden Ring: Shadow of the Erdtree (Metal Cover)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e401856a939b7e2d7a94e75b568ca2923a8984b7de9e3b6039ec8c7d9b270d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GBMA22367301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1592c864f7cd99d40e7cd95030311a8c4b5d76ebc53d46ee3b0f177b65f03755. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/GX53U2358141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecd5ed364d1a985d034e3360e52256aa1d743aa8adb3a1211cf185de6b0c34b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBLFP2489023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f4b73daa57d6e7b495dd69ea1bbf0f53fe50f010cd1a896862bf8141333d5e. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USLZJ1773311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0003417709dcb24ecba32e3e4a811a7250076e3510bd4fdeefb5877a3b82a5. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/USLZJ1773315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e33c3da97c64a6cc6dcdc61f2361144f7bd08ed1098935d359ade01ba733816. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USLZJ1773316.