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 0xb6e921eb8e51fd6463f3da1e04a659bd35b96c8c1f9db2a6c0088c3a319a467f. 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/88e1dfec-c3f7-4707-b92e-31300b268f03.json and https://artists.proofprofile.net/proofs/artist/88e1dfec-c3f7-4707-b92e-31300b268f03.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 0x05dcce7941439e514b73972462b40e68ced1f78b068f96e71fc0e9a9dbf3f913. 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/TCAIE2497110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235d88be53ec736cce844827028d56cf1083f763556d6bd07b90a9d4749891b0. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TCAIF2455852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307c8c196287cba4fb7dc46f528841c1fe57ff202b09c747ea85fda079f0121b. 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/TCAIE2455863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f07d5f1bf579ec1b5ac8e10efb06345e810e43adafe23e517f6e1757447a2b7. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TCAIJ2413744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70d4ac9192d03a332014b864dbb5637907ffed936399fe36c83e4d4db554269. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TCAIL2407266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b59b7b19e839450445962414cdd176d16f435619f1ab3c338cbe6157ca88ae. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), 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/TCAIK2407278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6fb943b8ec49176979e9ee5f988149b24e8d881676d933c414967d343f51c4. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TCAIK2407285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce04826268aaa1df8ad2cec0be8b03da986f16164a00f114175fd63f74b310f. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAIK2407287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe344b7d31542e337641e10c1ec03133414e9ede82b975ca023cbd88094cffcc1. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/TCAIP2488937.
No Dawn for Demon Kind (Instrumental Version)
Our Lady of Victory (Instrumental Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf907168a8886c87334ccd348577d449f9811c3d61788fe7740f6afe299f003e1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAIZ2424595.
Hymns of Eternal Victory (Instrumental Version)
Crushing the Head of the Snake (Instrumental Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269fe88c5645a22a21f5165152cb9d21a310cc9667186c39775037b71caca757. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAIZ2424465.
The Harrowing of Hell (Instrumental Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9baf3d599a865c66375f872de75dcf2ff16ba1d84f878789fd9f8594aaaa1cb5. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/TCAIZ2424475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc8370bfdbe776cc08528b4d890920568406d3f3472f387ff2a67d1a44b09ff. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAJE2559759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45bea2468d2c7c0d80d9813cd3e81c24952b5391eaa1e9134ed45c3a3a619ef. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/TCAJE2559782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe221b36f8ef1a85b8c47f15ff168b58233c522a358c26595c25f382876b8604. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TCAJE2559796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937cfe5306e298d1b5de4c73c56fe6d2f37ff166d310251511786ba19e4d66a6. 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/TCAJE2559815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2668ca0edb32f5c9f9a0476f9d9aff622377f0d1467c40c4eef405b08115c9. 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/TCAJE2559830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44c20959ec1e255653b9afb7cdc013d22eec1493a1c7fa6291f4341073d86f0. 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/TCAJE2559843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c443d4600a4ac3152ef3bc313697ee1138d91c90ddca5f53a66bbc00b58f19. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/TCAJE2559854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2df3476f73226a1ad2a716270c58499ee0672f6e73af380a410772ea75b8fc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAJE2559868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecb88e1792e6ef9d28485d247a2d7e2898b0199d17663fde72ef723764c78d1. 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/TCAJL2534198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74d96f3c8d25cdd4db0e0e5f12e08c89d9a54c646bd321ae588168934c155c1. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCAJL2534236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9c205e6f4e6cf7e692ad31d23689cfed679794baa659def8e4ea76e2a334b9. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/TCAJL2534240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54a8486d6bbb34911f10f659f52b33406dee763a90613a98a6a3f58732a8859. 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/TCAJL2534252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51f45d2031d7488239217f8cfcfb82bb0ae39c13dd3fc9cc57c07b501931944. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAJL2534254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24931bce3b483dbb330c75888e714cbf2d1fd116ec5dff44367b4e509ddae79b. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/TCAJL2534260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619db4c6cbbe1639795c03ee595f5000caf977fdc8763d8a03ba4ec465685cb5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAJL2534262.