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 0x2bec4943473f206270bad4b50c8b0aab1c6bef84756701fa64419c86c8ac74c5. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/290690e9-d62c-4286-99dc-7c5ba6eaaf28.json and https://artists.proofprofile.net/proofs/artist/290690e9-d62c-4286-99dc-7c5ba6eaaf28.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 0x4239d81c4301228d6434755ce27f8b4123314258637282ec1f53b24892aeee1f. 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/DE1JU1114364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1101b2e3b08967377868211e5bf42c628e89dfc3526effef6dfe8d88d751d710. 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/DE1JU1114370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d185fb0408530fe332237180980fd9c47d027bd1c080827434519eb2875de1. 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/DE1JU1114374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7795c32cfdccae5faaf32953eaa92dd1ab3d30db197780f24138e178eac32937. 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/DE1JU1114375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ba601fa49ac2bcd4147b901a662c905429292943c2170fe8ff4ca75c368b19. 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/DE1JU1114376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa879a9975301b9b80a219256faa5f93acc2d703176e8b9daafa68881a686871. Chain 2 (Bitcoin): anchored in block 957253 (2026-07-09T03:08:40Z), 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/DE1JU1114377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6e7aa7ad6bf0cd315c8a78f3e93457f0dac06249ba206a8a4a3e39a10fdcce. 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/DE1JU1114378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c96de52a970bf71205c0e1585f3c5c885847bd0cfd05a125ad864fe031c0c34. 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/DE1JU1114379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063fd1b8ad61949ffab3cc795ce7a3a24beb15104bdaccec45c9d38dc33fc214. 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/DE1JU1114380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e07ddeb3699f2cd6fbadf847bafd3be499aaa8ecc3cff6858fc38716ae3c9d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DE1JU1114381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c95f779e4aa18e119c38cb36e7dcdb94843063128f1e181824a4fff45d75027. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DE1JU1114382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e52b550bee02f7467af7e9ff0f09a44810ecf8db168580e4eababea55dc3b2d. 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/DE1JU1114384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98f057077d91e1056b6e3ca47c024ee14d27ccdf75fef3cf5857a7505f4fd31. 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/DE1JU1114385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6a56930052fb2d599ea24e99e1b5c9c1d8be411348e737a3bebe5404d6c591. 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/DE1JU1114386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544aba334595381017ac4245ae302512208d238b91f3306726c737a6d33220ef. 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/DE1JU1114387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4580c2fafc7cc1bf2c8e1ed2909118e406d4f541e9c91adde50507aa7c9a4d2f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DE1JU1114392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a0c949c5840fed31ecaf87f3aa4f3ec5cfd8f68f5a37d7f14a690957c747e7. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DE1JU1114361.
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 0x21d1fb3d71c43b839952df71053a4469df24e485416ec4b865f3264d61a1efe8. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DE1JU1114362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0828ed62c3214cd739579841b7cc3c75a48443877f095d929fb6a980e03596e6. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DE1JU1114363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd35ed86d79251a213cb15ef9a1353f42e595f26ae566040b3bec74707b0b57. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DE1JU1114365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfa81f36addbaf4596f847334045a3fc5c780909b10221c4cabfed657c5efaf. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/DE1JU1114366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d4a91723a2dde147a46d539aeb3144876ef7319b110dc82f1946c51e5d25ef. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DE1JU1114367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d6eaed9c696c607401cbf6af19138ff1e7e55d968ad006e3acf27537ce6bc7. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/DE1JU1114368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67656e85ad94ea28a555571dac8042a9fa70dc81a73c851c7494678d6b3cd7b. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DE1JU1114369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ebb199b574b73d9fc14fc29616dea97432d794bb4399e114d9f0d518d1234a. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/DE1JU1114371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa32c58da045840865a819e464ed1ff80ac869b229db35ed0972cffef111f388. 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/DE1JU1114372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7d86d6a8459b17c05153a8b8dab4d2caae9b55b046b6765f2b9b2048ff3975. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/DE1JU1114373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c44daeb4a3f2bc654ddc5ac8e1c929a6f5bc33db4f40b781fd3c1668b0557f. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DE1JU1114383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b7988f0129775baa88198dd9f1e58ccd867313fab07970d7224b73ed70fb94. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DE1JU1114388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138d35c9f2afda82e3be9b879b9cd8c71d18d2d9468c231c196c99010b68816e. 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/DE1JU1114389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c0912dc603c672d416521be240e19c07b0530fb13d18bf4c8395211a5a3edb. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DE1JU1114390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf304ab41bf3ae9ef24c5194f33a94ea94d2124c00b09745bb04d36198f48290f. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DE1JU1114391.