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 0xb81b5736ba5f24542ee9f0b9f6970321c39193f5f37f01f00ce0256ab1b44afb. 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/abd14d96-baf5-4e5d-9eac-9d2f4ba9a9b4.json and https://artists.proofprofile.net/proofs/artist/abd14d96-baf5-4e5d-9eac-9d2f4ba9a9b4.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 0xb7f63b1e4af3c80802836c0cf35fd4ca2e7ae539d0cf24d58c00cd75357f8f5c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADK1713069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2649ea0c193ceb1fc4d4730d4aadf28c41138504960744b7b6c7fd0dd4b703ff. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADK1713070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd09df1496ab75f0155bf14cf63bb0d0f6d6fd8b5c4393613dbf3bafb276696. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADK1713072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88cda05087e8a1a37ad230cc099e31c767a829ae49dc2e81df25784952fa2c9c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADK1713073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7ef610b4cf2841f26d82ccaa0b0d341d8586115d0f7c9f959f698b504059ea. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADK1713077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c832e6d6327a0413032b980f1a9ce0bcfd16f725bc9ccdacae365f62445813. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCADK1713078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe848d6eb65256c60f42ac1e9e7ccaaf3ef0de9df6229038d4c0218e43545b15a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADK1713087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabb3d115b9f0ff359cc9b3eec72ae1351aea5d503b37b08c4ed224762c751be. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCADK1713090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8a16a016de69651e6bde8565120fbecda9e758134d63ca8aad52f32caf307e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCADK1713095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788217cc124fa340bcc6361b88b33277aa83e6c66be9845a9c3aac27040adfce. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCADK1713096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18833fa42e1ac6a2f40b3b42e6bcf206b34ae3929000eec9732b68f3197598b4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCADK1713099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9adb0797ee5fef8b94e3294d4c90c61c8b9f22d53ea41384aedf59896cb3ad6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAIS2486642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0233027c7932944321525fd243043b824e5f25aac89ab476050d618516c279. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAIR2486684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4470cb59bc092173f3e6e7bd50c49521dc7173f65a7acbeaffd9e98c68a855d6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAIR2486690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e396399c4fa58767ce7090b5ad9c400617847db813fe9d34c51bf9e9f3eb8ea. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAIR2486709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41c15612254f8057faad0b514638739d4746e7d95c44c346e825f605dd139a9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAIR2486720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabf64d0698fa93256d27a0a92d33733b5e8b50a26363409ba34395e46afe310. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAIR2486742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bbc14b832bc84465402703d0919534c524518f87b35f8aed8f09d8ddb46d71. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAIR2486875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce11a81761e6b15ed0462615581d1756185d5690094cc75eafbe08026069e05. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAIR2486888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6640e6303cc0429ae7f51746aa65f48eaf2f67f653da02d9bc1355c6c4d2fe6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAIS2486957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879dd2f111467793ac28af0b10be992427893232223a0ac7071fbfdca6220ab7. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TCAIS2487039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab7120f74f8326fe0d94cb0d88cd0fed0d22180ef72619d850cbf59e30f4caa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAIS2487114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc273766c5552acf35b60d3f8d2c4cba38e2fb9e204d6d814fff5694d6fe74b45. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAIR2487228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e2eef89ada9a5d73d08c28982a15dccc471d223c24e5280f5c4f242f3b7dc7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAIR2487252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa464fe2e8a1d44543bd3dfc58dc537d5d992a8abdfcde5848a6696b0f764d3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAIR2487379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524b4d1e29d6cb2a76daff9cd55485d23a0e56a643ebd6d91b4e12791c097566. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADU1846015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b6bfa9a50394e3adf66bbcd677cc6c37ba1f9688220e656f564d33b35e20e8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCADU1846026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfeaf6715a626eae57a6f4bf19d602fdbbe8d6d24d6a35f7a9aa6f99fbeac92f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCADU1846028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480f1578e05c9ec09223544ab800491199ba7ea860a2162c588e426b297cb252. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCADU1846034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bc1cbe7dbb61aa92b1b883a7b4730315a1a635510ca66cea80d9ac6aa921ff. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCADU1846037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3cda6b1f17163ad982e524ba73b674c88ac9bdf20e3af489d0fe16270619ea. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCADU1846042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7452edc88f6001ab96e69f14c02668c51399416d650de7ec23e10689731663. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCADU1846065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf0e33f6baf7564adaa6310ed4166ca1cc3bf117d39a59d9ba57737f3eb40d2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNJY2348888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4686a09efd42d0e6c09d61c62a96f8bd2f499111944db191f3415762866c2295. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJY2348892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68eb7c4e0d2f1e9fedf8250bc0c81e429cdc317d128de2c020c8ed4b7cccaca9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNJY2348893.