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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b45ba3696ed87316a25eea18a884248f7982b4ad4146f479039d4259724e68. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/adc46893-a5a9-4535-8672-073174eca13a.json and https://artists.proofprofile.net/proofs/artist/adc46893-a5a9-4535-8672-073174eca13a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Harder They Come, Pt. 2 (Divide & Conquer)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86aeb902d9b80502e33afba789426ad124731fd46bb0c741e2ac1efa606361c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBQXF0230008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ec620b5ff5601830d1ac551d4c17d9c43ee480fed82a376ae3a92b40ca4104. 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/GBQXF0230010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64ebbc9388a561eb0f26e03d89d0609f1799e06a03b143a6b4273e64c2a0eea. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBQXF0230007.
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 0x5499773c1df5f3dbcdfa364f066f94d8f514ff68475c7517ba386def91533f78. 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/GBAGN0210112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413478463dca6dfef6fc4370d91a547b1c10dc0e41c141e68d046f99b04f1858. 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/US4NA1110065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65702f557bd7504d0f340f0c3d8cc17707ffd59f58ff9ecdf11a549a6e6a0fd2. 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/US4NA1110066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a7dc2e2080201dc2975aa74c9852d4253a0e62a847a91bc1f7fc5b6ca01521. 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/US4NA1110067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbd837b900337cb3b8422751787dd8cad434e2a96dcfcb0408bd7f1f323d878. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/US4NA1110069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b4d3b44bf8c12c7e45890ab1d326c99ff04e94343774b62778914126c16493. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US4NA1110071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4819ca53bbc034f36dc1c3ecad274322b724594f872e8aaa459f3ca19d3965c0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US4NA1110074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe792dbe474b94fe1122b441c2370cebf4f1c48e8baae88ec795de96fde0fecf1. 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/US4NA1110075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96811ea76f4cae3f0b743ea8064c3fa8664ed56ceba81c92753d0cc6a7215345. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/US4NA1110068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7ddf9ddadd61c3569b1b585d91e732f31651555fb1c7bf537ed7d5ec2f103b. 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/GBQXF0430041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74b18f6d73c1893b2fc6a0e09d836a84f9391b374b6bfd3882624f282d65032. Chain 2 (Bitcoin): anchored in block 957013 (2026-07-07T08:31:11Z), 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/GBQXF0330003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe570a4e32b56bb9c26968be94b6545924e0a2952d3f37a379be4367b11b07452. 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/GBQXF0330004.
Batty Bass Presents: Return to Planet Batty, Rise of the Artists
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde5a1c1ad1ecd2fca75ccf3bdc49fb57e18879c3855ff54b7e104c198496d52. 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/GBT8T1100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3027822925ee8177d9f21b4c118b2fd6dcaa1dcf91f067342ae5d6d3bb2e11d3. 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/GBT8T1100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbfdcc6261d12864dc7980d3596513b7cafaf56bbaa07cc1150b6efa4745568. 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/GBT8T1100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7686f7d72a5aa3d635de90316319010a23ce19c6796c43850d44d3c74b54fb. 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/GB5KW1600990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d4d8a49b37aff861a125d86af73b71df8ca19e6d46108a6c47c64eec4e985d. 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/GBBZH0606102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1bba7f4479ebe11047452f52f21a1f6754e158606083bff4d720e82f041bbd. 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/GBBZH0606103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa390a2d77645b48a08d399ec0f92c786b0654a1df95e85ec4b629a811c144b70. 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/GBAGN0110087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95cfcd349c993cc80f84da92de092c9b35fcb94952de1bc896ae48e5d85280e. 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/GBAGN0110006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd92048e544d06684865ef6966105bb0c55d8448616ffb5cf5d0e06f54b416a. 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/GBAGN0110008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac3b4be47050984a390b788101d4689aaee6ec17e62350eeca2a6b85e0ab3f5. 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/GBAGN0010087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b1489f69571eb3e5353a276198c6714970d6bf715d615102e50deaadef5b35. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBAGN0120059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f903fe8c46194c2f3192e48ee04b889fd1bdd8e84796aec9cd9fcc367e15ae6. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBAGN0120108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76f1574210ff44c28e6b62440d2e77912ec9164fd0270b19ac4ced4b1ad58c0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBQXF0430010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423ad35884ae9fb797d0d9b6988c0c53e56ed99f10047462eb5fdd226f5425cd. 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/GBQXF0430011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbda0107a09842c30b4c100158a3d471e0d0ade4f0ee175218b80ecfbb83b80. 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/GBQXF0430015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8f7182d734e3a1b0aef47f9db75b14a4c83098ae7cda5f7d318a83e83a220c. 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/GBQXF0430017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e9c7800ecb609d9576b926a3ddb6324d5dce5c1c8bb9ca6d28fd580614ce82. 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/GBQXF0430018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6c573732ed3814bbbfd90ce644506b84a70f0ebc033475da797154a10783cc. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBQXF0430009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871ccbd8177f1ed8da1b734d69d5bf5c104c3d420f18ba19dda43df6da5e759d. 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/GBQXF0330019.
Archaeon / Twisted City / Sand-Gun / The Voyage
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f3f94598d2496b35d7f1881ad3f7143c6388fa74222c3349653f9637ff0037. 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/GBQXF0630015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8975b9e835d5157da32814fd6012ed835265bb69f14641fde60e7c5e41149b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USQY51260365.