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 0x2ce9e0bf2151d0615f6aff05094360acda497dc8adbf828c84ab101cbe159b43. 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/71111907-2311-4730-bdaf-123da757c709.json and https://artists.proofprofile.net/proofs/artist/71111907-2311-4730-bdaf-123da757c709.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 0x02c1a3e3fb28e443469f98039decb025f68c9162830b08fa4fd68a19662f3eb1. Chain 2 (Bitcoin): anchored in block 957527 (2026-07-11T06:08:55Z), 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/RUB421304499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4df22943b2bc5620f634b06b4c1c025774803ac52a4dfe79126b8ddeafd88b1. 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/RUB421304493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8204c9506b651e79533ffa8e450b8e6de9b62371401ba26f05da5da76934784. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/RUB421304490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1dfbd4aea21171860625f44d312b91544c0df36e1c9f28876783387b06731a1. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/RUB421304496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082b9f75999489dd2edc002b06130e02393f07837c187cf5c235e3e861cb8760. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:17:15Z), 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/RUB421600383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2932f2fb0b840e6a6d7e3e56ecef3c4502f805b454bb48bd5c88fe519c591657. 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/RUB421800784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3351c8c780ebd274e3ea1ac40ba46e348a2174189d315b0e48995316906ba694. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/RUB421902146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e230926abb6bb7a5d3276a45f0cb8e6a28badf58fb99fc1bf9c4edf14d8715a. 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/RUB422001888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b3f59f0a45c51b5a62bc4f2d695e76dbb203630f5fd1c0d05a20fc6af41b1d. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/RUB422202480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758d8f712bf54fbac1cfa92acc323bcf5d6dbee07c2bbdaa0a5945abc2102d4c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:07:32Z), 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/RUB422202482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca76d26f236e433841f9a671536a2fdda3b83351d98002074d5fa15768ae1a3f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/RUB422202484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa302802ef5530cb15c166c9d2b8c25ef2257ce42397b06f35d2213f0c8b24c62. Chain 2 (Bitcoin): anchored in block 957527 (2026-07-11T06:08:55Z), 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/RUB422300704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1805a4c9180024c7859bb350c4cbf92826981991ee3fbb3ba762517be086f3. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/RUB422301323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e25324925cfb447c1974f571e8cc7acb824771682300511f206a22ccc95ca5. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/RUB422302937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9eff497d5c69908781c29dfb127dab69968908a1c36fa510b82b8c8301b3050. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:49:08Z), 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/RUB422303246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac30e53b090cdca67a0942af23f9bd6189b831a343ac65d0a6094cf38efe97d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:44:04Z), 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/RUB422400643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08c3580c483c8fa25fc99eb65b57b29bdb5162b1b9982f2b55a720faf69fd8d. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/RUB422401098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0ac672594b23f52559e82fb4f15ad134f73d4cb71051c7fcd337e9c3ce3ab3. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/RUB422401801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef01feb56943a81dfec30e516c56bf7fbfe95e77ba336d816eb448e26406e89b. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/RUB422402164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1e1b9a7ca861934cab226a2d6f2ffe4f1a0c632039ba2f38a002bd1af70e35. 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/RUB422403503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdae0a3737156e2457817b5c2827b4031d24e06b901f443376f247931a612979. 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/RUB422404077.