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 0xe2b70aa9e1b3c8f1e401bcf2a70630c56db4e0d16df1747f63ddd8bf90f3edd9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5e25d56-aa22-4bcc-8475-700af77213e5.json and https://artists.proofprofile.net/proofs/artist/d5e25d56-aa22-4bcc-8475-700af77213e5.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9389d497d228b9139fcab0d7302070dce16625333b2e96031d1887d469324ce. 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/QZWDE2434428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb977109365a25272aed61bdc1a2c8cc68c7d7c62d2712b64fca405e1a77b5b35. 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/NLS762300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6cc9b10762f976eb28794909cb6aa4acbe2c65c327600e03a5fc652879039b. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:49:06Z), 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/QZWDW2329536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171fbf573c5781f9290db358fabbbf178984d69f0acfc344b9d9009491e86ec7. 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/QZWDW2384624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dea641cf62d2818be79ade8d5df6344d0b4c4e37181bced813d450ef20f71fb. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:54:22Z), 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/NL1DT2300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69345f92a495fa075aee9e4920bd0910caff86d6d31664601591839774c0f61a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DGA092371965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe46c871d9f92c891247e92436f18ff165e51de45e629e7505b8ebba9ee8fee. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZWFN2383230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf259dc3df3f8fd1ddfb4091188dc4dcb7f56702e250de93aeb5335f42c69d4c. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZHN72466947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf259dc3df3f8fd1ddfb4091188dc4dcb7f56702e250de93aeb5335f42c69d4c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:57:12Z), 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/QZHN72466947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9816f9972f0215d3f2e50ec03ba563731c72e01b09dd0eb3dd60843e1748b676. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZWDD2450641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8dc1cefc57a283e65e10a1144fc5b37c47093401588607059f77d4aa3fbc97. 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/QZWV32419522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8dc1cefc57a283e65e10a1144fc5b37c47093401588607059f77d4aa3fbc97. 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/QZWV32419522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fc2fd0083f7e4f463480bb44f73d060c0afe4286c159353040d20c4190a314. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZWV32468543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d0f561fdcbdcb269570619705d5abe8cfd0863dd40b3e7859b1110777c3918. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZZ8A2405119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd66fb177884892cf3248d11f9b6d3f506d7f07f6044cd3b085ccf2d87c82fe0. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GX3HH2532197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5d4e26ecaae741f3d70167e5b31c1f37fa23cbf3c20ae0c3207c8808e5a1fb. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GX5MX2544572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c10671a49b664a79e4c431cb12022cfc99723f798b2ac8d948d3a1ce87fe4db. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/MXA3V2446401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97385cfd775e7958108ffbb23f7f6071b7d25d6065ab7080ca2f479060d8c380. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GX5MY2515518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9014d24df81aa26bd1ee5016bfc5e91c035fcc81d9aedc89ba064d9ffcd0897. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:45:28Z), 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/MXA3V2452677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10657f87a73989baf806e8502ca4747986f5960ed935790b13fb83d5c3a6496. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/MXA3V2453783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd833ab94f7feb0a5100252c722949971f81b9a37a6a5f1fe22eb368dee8af294. 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/QZTV32416627.