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 0xc5d27e8b023f290e8b744060248a143d3f29a7f972a73864f37c035c4db1a0bc. 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/5d7ae73e-8c26-470f-90cd-fca28cca6718.json and https://artists.proofprofile.net/proofs/artist/5d7ae73e-8c26-470f-90cd-fca28cca6718.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 0x6c65f252b7b14f9bf231e6113f1bd04ab06609ccd62c74ff303485733467052b. 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/QZ2RP1901606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1e582141a63512d2973e0968f0bf0e11a8c3458ffed09d8dbd996c5b190484. 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/QZ2RP1901609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed7beee37f1848b2aa34fcd06ab24103e142afd3ded3c1325debd2681ad5207. 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/QZ2RP1901611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469fb713b12f61dea0b3a4381196656c1bc5850807cdf2687055a6aa804e3797. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QZ2RP1901601.
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 0xd7d449e59c79c172d8d05432765eb8f7636d0071049b116b03222a3d4bef8b04. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZ2RP1901602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42771e6a4f35d83a2413dd3c3a0e879ef5a4490463f7f1810171c06e487b501. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZ2RP1901603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9632d75044363557d7634eb0bb233e03e3ff22afdb2e6951db7e034f2f29d3d9. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QZ2RP1901604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f087737efefbca12dd31fa97913076e3d07daa05b4caf2c6c9eaa996c2fca6f. Chain 2 (Bitcoin): anchored in block 960306 (2026-07-30T20:23:53Z), 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/QZ2RP1901605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67737535f24edc85a48a268f7b6e4ce05b07dd7377946a1329b8c974d97803a. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QZ2RP1901607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182178ac032018776dd7d861fb780eba64b3d32a5f2a6737cca60fe1e859af5c. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/QZ2RP1901608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b004daeb855939ab21598053198322e2ba8cb65998554287451b78dbf6847a. 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/QZ2RP1901610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7c89696e9e403fe98091d7156255f747e4465d8a14a16caafa8cf52b57cbee. 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/QM4TX1768617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab2230f1f1facb26fd8dcd4fe7fe7db5a5f7be072b86539e8655dc535f8b47f. 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/QM4TX1768622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af4e380684e968f3527c3bfbdb0e1aac5bc1383f36756cca351ced7fe940130. 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/QM4TX1768616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b06b948a37bf9a321ebf32e3df859887276770c23feafd57867eeb846630924. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QM4TX1768619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadee40f68767a70a4c8b4f758d903aad0398597c9c1fb8a125705a1de22ea096. 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/TCABW1448861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ce932dfe1d477144f18d03710c8a083a5e64340848af829fe536baf50e65d5. 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/TCABW1448863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd470316a9484589bf18d952a3166538687ebc71011754de919c893a5d95ba23d. 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/TCABW1448865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a5616288f385433c56ac499392e1cc13439dfb4e32097b3e47969c85b7522a. 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/TCABW1448866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022ae6d0f8dd3fe6826faf7c903defec0b2fc6e8cac8067278d6638360b28021. 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/TCABW1448868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ae58de02aa01083503585c084477e37ffc1d6b9c55750c9df77ea1bbb4c9f4. 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/TCABW1448869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfbdfb1b35d91423513457841ce37323c0976dba8c7281ab63280baba91222c. 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/TCABW1448870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d21c81f89b5e759cc4fae080a81507f4a005215e20a4dd7f74bd3e0953af603. 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/TCABW1448871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d589860d775e317cbcd4c6720df87bbf1b9ba71b5070c718c503f79496ea61. 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/TCABW1448872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd630965d3e0769eed8f4fd4f713e0ae55a382376397a1be61f1c1271961e6f. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/TCABW1448874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed601146899cfbdb0f0349d28e1fdbd7d8cc19a84fe309e2a265c8684218ea9b. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QM6P42416477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346d0fcead8a7e45cb619747eb2055fd9c3694cda043f1f4c302155053e19995. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:35:38Z), 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/QM6P42416479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009bddc71140b23194598f574820584f15e36f6a576e4514f47e1b02266b8bd5. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QM6P42416478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84cf5f2feac1981b6de558902d8c011110e43a31db699d5952d233065e535fd. 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/TCAHH2375246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5914dc6dd3d6d82e16d213fb626dda4598f9467cf6954c5e712c617eebd1835. 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/TCACM1681885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808dd2c7047ddda5f781032360695cbb1c0512257e8eefee33cfde702b1c33ff. 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/TCACM1681889.
I Am Shark: Confessions Under Water, Vol. 4