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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 0x4d63f6f972dc28589ec866bc1217919f0a0b20b05d26cfb3f6a0e5f9797b876e. 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/29832850-9041-4bed-9932-30caae3b07cb.json and https://artists.proofprofile.net/proofs/artist/29832850-9041-4bed-9932-30caae3b07cb.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 0xd16a64f0ce702e04ab0e3e8fba991a79473b95380cfc2343a52f3e8effa9bc91. 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/NLT2H2400422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9797cc7b6ddb3440b5ca0cbadc7e404cde1bf8f9021dbe18bd0e0f3aab193cbf. 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/NLT2H2300745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf876fa9af32c4efac65e2dd9014c468eed6a9f9485c790059d8a23b0a20e459. 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/QZTRX2409460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303754900500f3e1a755aab0046102f98bdfea7b826b21c7e3effc730a92c40b. 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/QZDA82418935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4322d115bf13138d0cf7a85c3abfa04c932d5c59d17fd689370c1a32a1ea0675. 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/QZFZ32429754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee9526ab682cd5ca3facd69ed0933f05d53ace9d3b471bf3e8cb49c9f8d59d2. 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/QZWFN2306094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fc42a1801533cd5235a490e2459977ed5fd12aced8b16055f81b1592714fa5. 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/NLT2H2301114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf27ef1f511464a412b2b73a3691d4c77cdb2d493698bf7a3828a07e7ad02ec3. 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/CAENV2314407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438683db0924d00ad6b2b84b0079dd1571616d69a818fda3182e6f3a938c0ec9. 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/NLT2H2300711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bfe06da44fb84c96736b8e8a65f1d31e62562b19de5c68ddc526f9fbb152b6. 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/QZNWY2354710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe425cf782c57755ec386fff1c873cc70670d3fc3d906d2e244b2330c24378858. 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/QM7282312989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a23c437a0ec087b081c9dab7d8c880aecac4b2097dfc445fdecdfab8577319. 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/GX8LE2333338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e5353d7d712b56086743fcd5fa2155c07010767d2caa26844d556840285f0e. 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/NLT2H2300292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b2d3c10a298e29efcab4f7883812ee1657c3558ea3d547ab8ff76cf59d3b53. 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/QM4TX2371397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dd093ebab4a6fc29a6e46c34b57ff4d44a2be509360b3a1b7a1d294e23a9b9. 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/CA5KR2332600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62732fd2292852c1dba26dad6fb421f89dac61ab6157d1a76a16beff64794a9. 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/CA5KR2321869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2707467511733c337485418da0052453d62104fb50411437e8af82d9e21bedc. 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/NLT2H2201040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b913deeeb51d2ef9f8ee11ea61e29f56652e186dc7880247187e69a03f95f4. 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/NLT2H2200996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2f73c67facd07eca49d07105a94a1723f3f9b82c0c6f079bbca673b29ee077. 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/QZMHN2256294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62441c6aa2b502654246fcc4b406ef7a4285ff2fe1b918f4b5a8372c941317fc. 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/DEXW62200164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7c90b8dff7015ed6c6378915750d0ac3508a7462365b2f0f5aafcc6bf55f14. 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/CA5KR2273452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0196ba5a24c483f8d6c5516b2c52e0ea293e13050550cd39f2422dfcfdd26d25. 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/NLT2H2200366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d961ce21272ad1d1be07e5a309c0d9c084b69c5f426609db85e75753b2d159. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GX3HH2286728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508d918dd6043f9934f6f07790d7002480875b634e87b8092dd5f479691c917a. 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/NLT2H2100809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b25ee18ff726da8232d114a23cc7e81c9df72be4e7e68b38b953ce0f28ff45. 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/ES5064900629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f50399edde677097b930088f074c9e1947f7b16bd3adcc54a3efe2017e3ddd. 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/DEH742502897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb283465ef55374fb168d6264fe3b6a86b1b131dc28462ef30a72dd4784c5e0. 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/CA5KR2509523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0e4c2310f8d612e30597ab3af23b39b74516e55f5ecba2ed8f7d18367e1916. 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/CA5KR2500870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe425cf782c57755ec386fff1c873cc70670d3fc3d906d2e244b2330c24378858. 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/QM7282312989.