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 0x8f4b10ae5729a3d5f3a30f91adcfa7313f44eee03886c2037198f92f38c29539. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a2943c6-2e5f-4f03-968a-bc02e6d56779.json and https://artists.proofprofile.net/proofs/artist/9a2943c6-2e5f-4f03-968a-bc02e6d56779.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 0x923d90aa5b75cc024c1a93b3389d33449062e1dfc73b64f35ce1d4b9c597450a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/MYLR10820442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4787b4cbd6d70a52a84716ab61d3d0e259f39d28a4dc9b3a51cf56f8f5862f10. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/MYLR11420040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11202e7dfeea0f1ec3ef4d144e37700dea707437c950a8f3dfa32c9f6708e4c5. 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/MYLR11420397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d718fcc0c07e745878bbdb97ee4f4e4e3fc0727c21785736412e795d07c0b81. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/MYLR11320990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468ebfba15bd0dee339263f06fa6b9c79768fffbe909cea54fe561f01c59f309. 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/MYLR11422037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c37e82d8b35485961ad7c31d261c25e2862911a641fa563da51721d094d2f9b. 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/MYLR11420666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcccc1e7532219776c4cf531c190ffafe55b68dbff4a580387a16fe688dd71d95. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/MYHY12300792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7718e69e76c98fad6937a2e822c2f058eddfee7275cc3f71adbb0e5031c7d35a. 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/MYHY12300774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf349d5c72f9ef8ab2f40ad57e28a614c16a7a17413cfb2623a03714bcfea944. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/MYHY12300754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d24c78c66dda944c2ef040a9e2d9c92e72d7dc893f8c1e63dd8cae181badd4. 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/MYHY12300757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf952ffa56798153bff71cee42878389ec35a23f91403f4ba63cb4a0e70a48dc. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/MYHY12300753.
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 0xec0327e3e35524c64aa5a544ae39e1abaf122299eff2c32d9ad2b2e0f87e65b8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/MYHY12300728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82ac2c3158d185f819ac9dc47abe55a87063282b00613ce2d8060394424011a. 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/MYHY12300735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6877a229246ee1f4a5bc9b8c98536a73a74a00bea3c82bb8f26ee73288dca171. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/MYHY12300733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b85b81ece846b93028582ec4f00fb308525a5f673f988da421fe3fa7d130c40. Chain 2 (Bitcoin): anchored in block 957227 (2026-07-08T21:49:37Z), 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/MYLR11422049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362a007b249a3b3a086bbccaa2396ae3098f0e0587f066519a7e5b08c9e4b866. 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/MYLR10820654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66fb965e5be1019596d17913dbfe471516b0944af62ce70ee5b17c24b03c354. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/MYLR11424213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf487ee60abc22a8206f7c44e6fb337c11c7ed71feb4ff9b04c1d4c65619564e. 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/MYLR11422051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0902ac55f0660d9d4dd56dee24789fc250b00c16367a07ed6bf949483cca38e6. 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/MYLR11424223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d6b4d2c35994341b805dfde5855b48f67f66f1ae6d8f9430b9f41c64e8ceaa. 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/MYLR10820673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58068cb1b200e31ca011286af4190c48b2b05b3c05c6233fde7a883bda6b837. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/MYLR11424212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37017244cfda98be496f77bb36f74e00d414fa0f67d0afaa6cbdf96271a63b31. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/MYLR11424214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bfe3ba630685d7f8a9d5c257f32cb1866d39b8f872327e7cf3ccf58bde23c7. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/MYLR11424215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc516cf771725ab5fc0f8d309494d64661b1e039364293fb532de3da97d80e68a. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/MYLR11424216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db9ec42c9d8a52b676ed75766ccb658a463e0cf99fdd726a554d8f636393613. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/MYLR11424218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96de2048afb88d9583179f94d9c160982d009c7f2f0bdab8e8cabb86688dbcdf. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/MYLR11424221.