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 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 0x4c2c716005aef8a73714af371052ab87617730353133a936dcd823620d04aaa0. 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/bf242d6f-ad5c-4a9f-862b-1598569dfd26.json and https://artists.proofprofile.net/proofs/artist/bf242d6f-ad5c-4a9f-862b-1598569dfd26.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 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 0x5c3d76e99680588b602021a79fb067e6aca44ae92a1a44e97785cebd352f091b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BRAPI0602519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadd60432030b4391a51e1c850b9e801245ff79ca91207c33e8ad8c8393fa51e. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/BRAPI0602520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5558037c8d11ebe45889c7b7942eb5a09837a6d45cec917eb739fdb6c3de5d33. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/BRAPI0602524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5243741a4ed39268427058a3e7b2efb07e7064d1189019dffd114a87919b5411. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/BRAPI0602530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbdbdbf318074df536e4e96430d25a7500c06daf0c267a40cc01873a898e0b49. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/BR19C1303269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68eab025ee9b7a51b270765618e084b063077414a11c532c24c63fa1c79cea33. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BR19C1303270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a2d04b1a34e506a6df2b60b6d7f540a8c416e5438d6ed0ca15c75d71053190. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BR19C1303275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bd5c05d2bb3d692113ea67973a4d6c8b97d4a0e6f915bdddf1429928915ed0. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/BR19C1302418.
Voltarei em teus bracos, "Volvere en tus brazos para siempre"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ddb4719196ac26d76a4491fe897b9138f0213e144054018af0963b6ec3aa82. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/BR19C1302420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11b29e3527c59e73ebb14d4ef50fde4836b36e7b58a2b819fda5be22f3f7e76. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BR19C1301662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c06d2c735cae37606dba6a4468f350780f4f3b745f20f853686c20425de1bc6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BR19C1301663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21cbc108e3f9fcd8df686abf57dc5270f85184c8d4fa3201a675e3d5fb33c90. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/BR19C1301665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6fb94afe1bbbeed3030bc96ded115216f2e401b89392991b11043b9aef5aeb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BR19C1301666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e5d8c2924212be810fd2ccf6618ebf34e6fbe499d361f7c3374c8a40069a9e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BR19C1301669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026a6099fdbc291602a9e9479444d7860af59c9b2a02516233764ff1edd9ca4d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/BR19C1301670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8435031c50b39f15c1494a4e2fa36b82d610ab9ad881646555a1b1739656fc4f. 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/BR19C1306522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8db3be15b670c0a18d6f628f93452a84c4e706ce1b84cd37555484f4aa588e7. 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/BR19C1300220.