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 0x2ce2d0cc3adb932f03f6558f649b919c84b2440e7bb72c576fda9d6dae83c869. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2f16143-425f-41e6-899f-3c06ebfdb0ce.json and https://artists.proofprofile.net/proofs/artist/e2f16143-425f-41e6-899f-3c06ebfdb0ce.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 0x9b2162de8d66edf54fa4f65f2dac1d68e73c6e3ca6538f81a4d3679fd91e4966. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:27:48Z), 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/QZTAY2399570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ced3780e330c014418e2e350b6ca9371e2e1e4a1979213775634324cf69d97. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTAY2399572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee674d3936e1c6d46f7b6eb22d906fe92e46948502b9fb3dc8b121c4f91e113. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZTAY2399573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3a3e58d48fa857a7c58bf8e386a046399858b4f68a58256a5a6895bdd31b90. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:36:36Z), 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/QZTBF2324441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81703a298812fa541b87d9131d1765af500077ef17eac3b4f4e74dac1a7bb8a. 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/QZTBF2324444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ebb08f74e1201523fb8f9847a77f5d23f0a597b719d9ac4de736335889a26d. 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/QZFZ22436685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa325c08a7a0ec047e8b91de9071556329d37c28f9df4cc93f8c20ada55674ce2. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZFZ22436686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583740464700ae9f1a47ae42855486d2bf34b663a33a780173627a6c4c43ef0a. 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/TCAJI2522129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee419ce74a733caa5bb4b1528943b757dc42b8c73a372e592fa079d58b71781. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:52:48Z), 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/TCAJI2522156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa18e198ee1a48aad64d393790fa56192f23afa809b4d1d753732b3c753adc86. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/TCAJI2522162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c8510fae648baf3445b2b6c9e0e168edd4c92849260e20bc956ddf19bcc1cf. 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/TCAJI2522194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583740464700ae9f1a47ae42855486d2bf34b663a33a780173627a6c4c43ef0a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TCAJI2522129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab6a7f8000ee731e1da973a0d07c5c0de925300f63c9aa8e7a4af372b3f9dc3. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCAJI2522136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5581fe5ed98464f4459e300279d788d0f7f6724a27a83829f3ceb756876460b. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:54:10Z), 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/TCAJI2522147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa18e198ee1a48aad64d393790fa56192f23afa809b4d1d753732b3c753adc86. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAJI2522162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c8510fae648baf3445b2b6c9e0e168edd4c92849260e20bc956ddf19bcc1cf. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:53:46Z), 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/TCAJI2522194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904cd8a81821acde1f3de87670a49807309daa2b389f3c36674a0214032204eb. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TCAJM2529435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eef0c39c723a89c2752c40ae115c76ab0b44b2ef6009be7f017193ade62ca26. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/TCAJM2529448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5be787660a7cbf2ab786f9ffd3bece32c805ef8351fba9a76ab1e18a5b1020. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:45:22Z), 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/TCAJM2529455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc482b937a9305a0b2e487601e89dbc48d0da630491a468e2ba2087c4d502fcf6. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCAJM2529464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b15e4fe1488e30fd521aa20ad9437f99a8c4868874cdf7edc1cede2afd6f971. 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/TCAJN2529467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356c170edfd38e1ae0f21838cbf70bf0716e43436d4afec4f25368cbb0cb7880. 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/TCAJM2529474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794621b72397e5d33435db145234ea6f8a59eb08bc71fb3a485e78b81bd3d828. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAJM2529476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f1e5e2c84f4b4c61f9533a494c4b4f158cd596da9f332c78001907253f6fa0. 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/TCAJM2529484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e565bbe1f2288c441e50f06096fd2c4a6a83095d7f3de604ecb3bdbd9b35ef. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/TCAJM2529493.