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 0x822bbe829ea57f829da3f0e2a5668df1d1069af3e7f77e151e8c8be642f0da19. 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/3380aa2f-4ec7-4b94-b273-036f992f58fc.json and https://artists.proofprofile.net/proofs/artist/3380aa2f-4ec7-4b94-b273-036f992f58fc.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 0x6ca42f588dc9184c5fc2ef291df1d2dd2ddf81916974707c97146763be3b0480. 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/GX3Q92198227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e39e35a56cc033b01094f62834b354bb7ceec17b5d89155ffe9e846696d9f4d. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/GX3Q92198228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615f021f0423f9788d6d4239364754f9641af09943ab7f6a6efd13266999a212. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GX3Q92198231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70e1320759fa5147baba4d6f25ce33a8f69689db6ddff28485d96a981c91bdd. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/GX3Q92198232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4f47fa607fdf65c042ecac763dc8cc20dcc6755d56552eebb979d8f0fdc78d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GX3Q92198233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46450c4765a6e347da8ad926045e0a9f8d47139cdb3ea7221bee3212d91a6878. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GX3Q92198234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2472c71e7dc44743fa7ee2db0effeadbd77376e0466dc3523b0a02a7ff135cc1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GX3Q92198235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bbddd377e85384492ad101e6e6d5f8194000c6bd9122e80cefc94a9c89014fa. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:45:33Z), 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/GX3Q92199776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44afdd4a7ce2a99bcc5c110df9f2c30dafdddc369adf334b606d06ce4e76df15. 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/GX3Q92199772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e2d8a168c2842dfd55ee96beda65dcc4b3a9bf99633c5d067ffe48630dfff6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GX3Q92199774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7122399f3098b1b983497d175cc94e897a60c18c3435d369b4ad014057c9de. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/GX3Q92199771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f35e259817c8274b363eac77fe2c63bb68543f718f9d92ece1c9cb687860862. 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/GX3Q92199785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2eab3bb978bc8900daad36e10ff10fe6390b50f782a63b2d91d1c632a91ea2. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/GX3Q92199783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e478432a8db9f39ec72a0bc268f448aae04203eea1dc1cc9c47339e43cb9ca7. 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/GX3Q92198202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35987a0e0e03d6dbadf35529a16b505078c1334d60bcf0a1d5c23efca8f5f68a. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:08:35Z), 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/GX3Q92198203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e8ac25244fa5c4bb55f7126e1993b6e1ddeb69f6f7c9038a781bda1bdd8c3d. 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/GX3Q92198204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a68ddc89d824ff63d15b663e44000f9dc0d6c5aa830eebde1381b5a22fa4269. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GX3Q92198205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bf2189d37346bf66dc5b38648698f4ae6cb8532baa1f52ada405d733a58e9d. 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/GX3Q92198206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c002e4ae04e5c2974b701cfde41e2451fa84e336800753f086199e49246b292. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/GX3Q92198207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7e2f855d2a947099579bc5f0358db1639f9c7cc50566ec1d0706c55bb623b7. 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/GX3Q92198208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39214849108643371f1946cd1b5d19a5764c0a0f6b8d2a2584b1ce3037c3a9c. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/GX3Q92198212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37f0fe4a94d72fe3d5a42a2abed772344a09b9d18b21eb7c96357d306deeaec. 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/GX3Q92198213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76498b3b796e29d47e600fe38586243fed16adfe0dfdce76f753e3a1376f95d8. 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/GX3Q92198215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e05c67d8fa031e58ab81484c59064c2e050aedc5f7781669dc71585af71eb1e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:04:08Z), 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/GX3Q92198216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acf7dc208c3419cc0955fec54768b6543db7a9b9b2facd6c4e06335cb35033b. 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/IEWGI2388768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f7ae769924630f62ce77251752e7a23cf20b8d87b80c939f03076ec89e8364. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/IEWGI2388771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa958c6e0018cde0ceb1253d6cfc0227a24864f18e245e4eda02ca3b8cfde07de. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/IEWGI2388772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ceb0b8dfef0b473d49403f4abb2716a8399257db80bdefde0953852884f19c. 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/IEWGI2388775.