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 0x649974365ba2a31209bd619535235e3eaea6a8cd2efe54d5a6f814fc3a2f3145. 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/243b471c-beb0-46c2-a99b-e3dfb5043b62.json and https://artists.proofprofile.net/proofs/artist/243b471c-beb0-46c2-a99b-e3dfb5043b62.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 0xda5c03b8f96d83a47632099b7479c843cc7729aea3983039ababa73377a57ae5. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/AUTD31000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191dc9e02d0ddb6efc336bac4d964aa3c5df8f154dcd0a9a58903ec103a248a8. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/AUTD31000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9718f785837e5156c21d9b8e48a83cc008ef37128482a73dd7ad1a4fadd2b8. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/AUPZ21100041.
The Financial Equivalent Of A Complete Rectal Exam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30d7e50ba31db8c7f1e88434490634a4d571444092e9b71f85f6e50aec6076c. 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/AUPZ21100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b5a6d6d94053ef987971651d854f89e624e7a71ed8bf84b1cacaeca26631ff. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/AUPZ21100043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2419a101887c409046d8a455a356dc78da15e884e1dc66488b3b81e67b144a43. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T11:57:43Z), 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/AUPZ21100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8369936fc9d802a5010640508b68a793472fd5cba657987b6e4b0a4ac0dcdc9d. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T13:52:01Z), 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/AUPZ21100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65677dcc85fb5be4acc28b7102c0f2d209c1f9efcbe66484fea614d6f5f4054. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/AUPZ21100046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa3ecd3c15f821efadd46f974648771444985b702294a6138fe3ea1aca7c1a6. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/AUPZ21500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afaf3dafed04e70106e56414edb890694a180a18cd92073d4079a5a6a61f606. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/AUPZ21500042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b5ad8b455140e60cd02571726b1060198d73f3623818a23ebc6dc882312575. 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/AUPZ21500043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c99858c59f438715864e73f38076c072f8d83f3e2e18c8104e909b70829fa6. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/AUPZ21500045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f3f65d0ab420cfb18f8802ff6caeb285c807dc5c47f4de4f69be7a10267f18. 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/AUPZ21900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1caea921cee1055badf7ae100a6ffbb8350342ff86752f61dce89bd0a08b76f. 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/AUPZ21900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934999ee199af9eb7dc9f352145c74f2aa0a080dec0f8f444c13fb7efc6178df. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/AUPZ21900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0a1ac00752cfc21c98adcf0ea02a240a4517430a9195cb7bc89cf99a6604f2. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/AUPZ21900051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47985b59cef1467cc37decdaa96885ca7b901e695392037f26e6cc34dd91bc84. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QMEU31512000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f23fdd06ae6de6723f6b3303aa2f2267972eb0beaf7c5cc0608fe4f5c8c42c. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/AUPZ21600040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc919c30aa4cc9b3e613a357931f3f262a7a5501a16d7ab8e5cf0da6363cea240. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/AUPZ21700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5edf66c3c27426f92899c5e2fc9b71b22f7c1489f0abd460ec36fe83e2cc77. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/AUPZ22200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4873e1f7a36825463eea21f286862b34b56820cce88f046991e0d80420335f6e. 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/AUPZ22200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cce3b90964cfbac8aaa4f2cd5d1cbe26ed6649a23911e5bf791694ad68aa569. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/AUPZ22300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0a1ac00752cfc21c98adcf0ea02a240a4517430a9195cb7bc89cf99a6604f2. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/AUPZ21900051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd54da269810fc0894b7cd53549f8b7558ca384512f46656d34cc95bc258d50. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/AUPZ22000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0b71086373f66a3348b51abc4336473d7ae2a477c8bd5b3bfe3cf4b1b696f1. 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/AUPZ22200010.