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 0x54936aa9be90979e5835105a53fa205f9a66326171ba07dc8ac2dc695f8518c5. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a089a0c-9d23-4ef0-986e-27e8ef4e8bf7.json and https://artists.proofprofile.net/proofs/artist/6a089a0c-9d23-4ef0-986e-27e8ef4e8bf7.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 0x34f7af1cf38a6958c82338ea703f39dea61f828a4ccfb1d856154e672d326228. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/USY252336092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7847c8d693143912fdfe68f23d769f967c8ccfc72a3db6fcc60cc3def3404043. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USY252336093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2040be2d119844a7140b3e9e6884487d3f6a78a1f3c63565e7af1605fee2da. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USY252336094.
The Earth Mother Awakens (feat Guttural Slug)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d4d5745b4c6c98d364994c618ed35c96c4dba2c05e39f744277c3a947dbd06. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/USY252336095.
Vultures Encircle (feat Storm Upon The Masses)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73456e35ef18e29a3fc42d6aa6ad8cc97a85e203813288aa9df1427af486d674. 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/USY252336096.
Nuclear Devastation (feat Downfall Of Mankind)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6feb57871c72913a3ac69fcbf2a715add7d3f41ca2a885077079fa3b51fd3654. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USY252336097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4677dcfb4b023ba4a87a27f09f184663fa144f0c2aa065b2710f2d7977e22264. 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/USY252336098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32cde31974f45056df463d299920c63516952789f0592da0fba3557395705c5. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/USY252336099.
Suffering Souls (feat Begging For Incest)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d29fce2be5a1815b433369e248d388cfd1d8ffd20171824de444862d10d801. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USY252336100.
Shadows Of The Departed (feat Bitchsectomy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3d01315f2183f8b2db4bdc0e218f8b9e303af04278bb929b3f6691914965a0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USY252336101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0258c975555502fdce988a765d1467fc1fa028204ef51f417a2102bc44872af0. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/USY252336102.
The Abyss Awaits (feat Relics Of Humanity)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e84ac48279e1cc57ef45cdd10dd7920e2ed5d094e47a68b643f44a058a7122. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USY252336103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925e8961c7e258c9fbb654c6f68892e18ba7380cddd8d2ee244856517a70d216. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USY252336104.
Descent Into Madness (feat Defenestration)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1996655b97e9f382d9738421e7b0cf013d480a10c6c96746d02988b8cc9f6b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USY252336105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe223001b38813a5b7f3d66511681c9ddad8312cc6b7a84f2c8ea5a900ee846f6. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USY252336106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe1c77b9349d442427f7f2bb57e510d6f942eca6fa59a325f775b53253e7a64. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZMER2119146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9c94496ae3160726219104b782a399ebc524757755587b37237ff83ec3a0f9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMER2119147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982fcf0f83ba6db38120df6e5c5bf14587d7e602b0da03361e8a48a33a03caf0. 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/QZFZ62071125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb21163a033f076e6d8aa04314e707b11228f10f8b80191b3bbbebf0780030c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFZ62071126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68093854d948d5c282d61f3fcb3ecfa59ccedc14cf6945ed7a7340644d221014. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFZ62071127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b00006ae2b956ac310264110e2756506550ec2991699bb90546e9527e61f563. 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/QZFZ62071128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059da0c06b87a5e50b547e127e3c74e8e09690bce4023f4218d0295470b35031. 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/QZFZ62071129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb232ccd3305d789a179dc0b37d99b150b8e599231aa6852e90bba6ef2485d34. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/USHM21879960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc9c0913706107bc29f7264a651dfef666abcb862d2b90c352d02c8c5f6b2d7. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/USHM21879961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce6bdc31c7f0764bba6f56716ed6a2ba6b7021e35e7189625e9e3f4c3df21b0. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USHM21879962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceccca4dec4cc493692099108fe6675fec5f8a189314537c14e8c56f24cb8444. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USHM21879965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948cb2b125d597b1f899d2c53055cabcea22f8519d5944272c92aae22f088f37. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM21879968.