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 0xb903a543f717b6c4a650ab03e1a4f16a70b02535c0342c5846eff8cf26c0195c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d6f2c67-baf2-45b2-81cc-7910ccfe8a6b.json and https://artists.proofprofile.net/proofs/artist/3d6f2c67-baf2-45b2-81cc-7910ccfe8a6b.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 0xa69ba55eaa42b43727f78b698f3365e6275cdb8565d28cdeb0b9f57ecb8ac3c1. 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/BRUM72200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb768e8449b8aa07021f6ca38a2082ce4debe4b0f234939d181a6e2bd9f807921. 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/BRUM72003431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f7eb046238f3cbd42b1408b8ca5d4d009a456fb9aeb1d40f4a855e1ddcae0d. 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/BRUM72001908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c3cff976e3a5e6d923505d6b38c80dc8a88f04ad3eb8b465926298dd9887e5. 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/BRUM72001913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8e86ed5d9ab2d3ddcd250c5a39d75dd1695531798027dfbd3be4bc4a49e07e. 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/BRUM72003432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7ded61b6578ec21eabd877b8c646e01f1fa6a1af80ac6616f0d1672d5aed91. 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/BRRGE1607478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3595cca7f371207dae4224cba3546b3600acbc29f3e28349ff4a1650124d78b5. 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/BRRGE1607479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a936d80e6fb3204c62b42092f2cacdd1a1925b60ac86a9072502f93290a7436. 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/BRRGE1607480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5bfe5513fd0f7d48683e863c202ac2afb9435b129ef03950ffb0236d774d98c. 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/BRRGE1607481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae716c22dda2ebddcd68abe8c94861e363b55159d816beecc430e0d830f8e13. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRRGE1607488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc84890c1f623ce1bcc36e2db50ccc78d10feb00dfc6b8eae31e989468297020. 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/BRRGE1607489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340be9af140665346450f39cb393dae3066b17ad45f0ce356d4f1ce3f4c60f08. 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/BR8L72200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69ba55eaa42b43727f78b698f3365e6275cdb8565d28cdeb0b9f57ecb8ac3c1. 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/BRUM72200045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe445ccfa10b542bd611d77ac079319d3349d0871cf926923bd26da15e7dcff50. 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/BRUM72102175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45219eb9effd98ba4185a620a0cc952439c3c93f4e9227ab5e0c999cee30ed7. 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/BRUM72100477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c3cff976e3a5e6d923505d6b38c80dc8a88f04ad3eb8b465926298dd9887e5. 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/BRUM72001913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc822c3cfdedbcb80954ced765aae8cdf7559eac734934999848ef79923fd6fba. 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/BXGJJ2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb143dabf275a1e39e4e850121bb8e09cee196562b389fd74f8129abfa1a9ce. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRUM71904376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d75c5da02b89a3f8d7968f1db66b4e3c8cb909ba2bb37c072ec2404a03fd36f. 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/BRUM71904381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb5fddaf15012dd43982317ddf8a1e7e2a4bca8aa4aef4f9a5a51945c450d68. 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/BRUM71901230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d1f88e4265685ed07f5af0fbb2e72f22f4e7fc5c8c48bb748ffd7eb4e6633e. 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/BRUM71901232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95601fc512501e0c8e1d51a573b92e4ce8620d624a00b61d063d8a06af8d3353. 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/BRUM71901231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc215a20e8635e2341aaaf57405845cb9c4f1f0f50b99024373ba7bd18812f2. 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/BRUM71901233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf035cc07e7b5d40f19cc762536c868549f6fc7ea14e999feac6ee599261e814d. 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/BRUM71901229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7ded61b6578ec21eabd877b8c646e01f1fa6a1af80ac6616f0d1672d5aed91. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRRGE1607478.
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