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 0x8be25dd879f29bb001623a745ab63da8764cf8f877392a19bbda1122b5e83cde. 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/6a4f048e-6031-4e44-abe9-aff1fbc6a9ce.json and https://artists.proofprofile.net/proofs/artist/6a4f048e-6031-4e44-abe9-aff1fbc6a9ce.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 0xf98a6152cd38816a4e4d7816bd53abed507ef4d4a779c7ab041cef4a40138422. 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/FRX202004262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a07a1091a917756de5e8417e50e27d97a852ff743c1b695e7ddd98c167e8d19. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:10:01Z), 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/FRX202004264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa94aed9fb01a95bf900b3a26f4332891ae838a3386c265d138e4e6950c8263c. 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/FRX202004266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c6fcff613bd391cc576d918aedd10fe94db97ef9042b486957dada83bdbe0e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRX202004267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e4944ae73022593ca7aaf108c511511b3ffe2216b08f719237783239b680c9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FRX202004268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ea17c70b76accacbe2e9eb3ee7292c98c841600debaa69c14727c203a161b0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FRX202004269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9294eed3e4bb6d8240d9e1e8449a2eb62c181895b32342ca569ad15e8638ec. 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/FRX202004270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b4a15fd50810403c84f572f17ea08a0171680cad1e9600b4ddf6ea0b8c5d35. 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/FRX202004272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f3cd8e4c2b3110ad17df8408ea64a1f02f1cfc0a9862eedd60910454811090. 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/FRX202004274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecde8fae785ecab0b12eed0b8ac264d1f12803868c200db6c0da436f87bc275. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FR2X42174783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a785ffdb2da7400fe2e48baec54405bbc92e3f4c6e2043477b6919202bda2e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR2X42174785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25ae93c340aaef64cf955251eb3ace36d23703cf6daf6cdf6dd3f2a5438fb8f. 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/TCADA1706010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf360cb672f32d05d8036c6ea6def4151b5220bc55d992529a4a62c677530157c. 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/TCADA1706017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1892b604cb76adf73b03423b222c2582474bfd1094675b04ab255ead27ca49. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCADA1706018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88a42434a8803d4bb3df63df8edd4c7adcb190ae89ccb8ac3c4fade1325c313. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:22:13Z), 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/TCADA1706023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8073e139810aea24ba59258fd8eec2e0a2127414cc282dbe7ecd3ad5b9838a8. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/FRX202055883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf084f68a54c8138eb249602c25f8ff2e49282fff104768ee73959756a1e6f867. 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/FRX202089986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0307f5716c6e69bc3781b5eb570f0f5971cd185a27e9d465c2fbd61d7ef7ccc0. 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/FR10S2112599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d623dd63cfdb203bb2e1de0b4b75c89c580155d637878f4304e78dd8221b34. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/FR59R2196376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed93c10f6740a6b07e7ef49ec4ab38c9c47816d1236a244f35b77d43b2696e0. 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/FR2X42216421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa4c8f6039257dcc566a4b146f32da76bcf68ddd4d2ede02b179b690782531d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX452109728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b92ebcc1c6b60b8cd4e6b56bdecd1e02d7670529f582884dfff7b79dda2d8b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR2X42216423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7fdd838ed4da71ea4b300c30c5ae9620fbfc5ee70cb1c07df4724617d842cc. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:12:09Z), 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/FR10S2429124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d17a26c5337eae62d9d4c77174808853520089b58ed94a5d0496dc24a1331c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FRX282493807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b89b000c34ba635fd20a5cb00a7944cdd9a0e219aa238253e9e0ae40606e2fe. 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/GXD7G2207066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a888185764403dc8f92cc633e113b406889c11f10f12d93a7425c7fa112715. 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/FRX201729902.