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 0xb257776d2c8d5839e001932c8f16f90ce915a473ae9ec10de6e111a08ef33ab3. 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/0e081dea-6217-4f2b-88a3-243b43233f6a.json and https://artists.proofprofile.net/proofs/artist/0e081dea-6217-4f2b-88a3-243b43233f6a.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 0x411a591fcfdd74aa30140fdd3aff4c49373ce82a75048fd2216f83afa2d8c012. 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/DECE72400507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b36e4369430c959c4a4dac2c8b1fcb3ba566dfe8769641519b0f035b42ebef6. 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/DECE72400581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc25cd027d7074299b7aabbd46816733bc846d7dc63cfaa6ef0f00d433d8a8c. 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/DECE72400582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c41409f31d8a9972951b793db85b8bdfcc45446441e77ec76602f257aa78722. 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/DECE72400583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe836c6b893389079f86ef283db770a4fcc226d7880269a4a6fef12e64225c22b. 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/DECE72400585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7528e1b5b47bbfa531409294d3f289b4c06aad6cde39f5fecb2a046eb801bb2. 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/DECE72400584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411a591fcfdd74aa30140fdd3aff4c49373ce82a75048fd2216f83afa2d8c012. 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/DECE72400507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9415946388deb4bdd1053ae9dcbd04cc8c3bc86f4be8ee37ce6f6f4f11f5d82b. 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/DECE72303530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0001700bcefa6ae0406f745f263c23186e77d556f9b79552c677827d23f37ba9. 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/CH7812238718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39297b0547717bb291994039bc21f8d6a0a04f1a39de06495b771af484a6d920. 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/CH7812343485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a49206adbe36f5409b954b664c2c5c1a06567dd1c28ce3efb46f6dd31128da. 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/DECE72302594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f21a1fb98dab364dee10d42adb76001a0bc60828fe92bd52cd0aa95850f820. 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/DECE72300766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799ef27895b551cfde96c151df673f98328a2ba0361071cb4dac45906dc3b46e. 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/DECE72302190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956a64b05e0cf0c041457b17e87186a2bb4d21d2d5bb29317cde6b89130a0ff2. 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/DECE72302767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2467c251bebfa62602fdc394522c778184920c2eb0a209958b93b1bbd4893301. 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/DECE72302957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c32e40a480a2fef52bf7c93b15332e9cc3cd21030f8c3a4767bb49d1e7d535. 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/DECE72301714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d53ce7326a00a4b65b2ee0f791d697b32aff668259986a0e8da2e5500a64ac. 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/DEXG92100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958212c74a6f35a5db2a957f4c8309ca127fed3fdc8515bdd3fe637bf57def0f. 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/DECE72102668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455312022f23bd7c5f645074ae2590764e4c12219f5f669542b236faa557ced8. 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/DECE72103448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a327c43233665649a40807aa02084fe07f61e893e17c5195769e9733d4566f. 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/DECE72103449.