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 0xa30a7403ece1b59acc6b0c0e142c4afdbf60fb38fda99431566efc39a0508f30. 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/a20fee06-a98f-4be0-82ae-43a6e037b439.json and https://artists.proofprofile.net/proofs/artist/a20fee06-a98f-4be0-82ae-43a6e037b439.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 0xfe492be673a43c50d2ea4dc090ae44cb4ec69d8ba01efe6032b1dbe0b1c7c94f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMFMG1318956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b3a03de2ea9f7b5716e76b34ae43c907efd183a0c2c0437da2ee3056e6d234. 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/QMFMG1318957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964d73503fe5da7a280d2a23ac676f78eaead09e5cd379d452122632f1a54cee. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMFMG1318958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ba9dc963d173520e551db9f2cb80c194253621ede05466b088eb4476878e1c. 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/QMFMG1318962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68dcbcdfd6b4976233ffa9f16ff5d7a5a9279706dc53e2d56592b9a6c8bc6e0d. 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/QMFMG1318963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871854a916eb9d4718ebcca391e07215d9784538d5d3cbb2da0a44061ab5ff25. 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/ES71G2030427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3dce8317b3bca260c1f3aee505b2c68c8efc710541be40dc4ce7fae6a816665. 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/ES71G2030431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b6d4976c84fc311bfd37c23c77a84d2403291ddcdd44c46afb481fe974a2d8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES71G2030430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596cd0efbce9c8090eff9a4357dcd2460330e9fa31d917702432bc319338ac20. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ES71G2030432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1fdc4ac96b789b025329fef3cbc77ecba37c4042c211e9f87e876f7b829289. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES71G2030434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7305e409dc956f0f351b1d96538dbdf2ad06c6d7ad88627882d52528da4af61c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES71G2030436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82eada4274181dd4b31d2ec1602f64e8bb852cd69437f8a585cc4d7ec5e81d7a. 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/ES71G2030437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe989f88a6bd88b7f343d3e25c7f55773d5631046ac6b40408c2236042179e5bf. 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/QMFMG1323998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985daaf7a5c3fd769d8c85492e679c0dc698d8a49b6a5958425d88911eda9981. 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/QMFMG1323999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e25451551af81b96484ee5551f859e2fd30c18494d12745da4231c7d430d640. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QMFMG1324000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84586cab5f10b2fb24d463395fafaf9443f6a1d98156a0af2fbfc5538c836f0. 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/QMFMG1324001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d8f37b36cdcf62e44c12eed5ed4b7501dc07f86438cf747641c6c95677c238. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMFMG1324002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee69a06413de078cd3eeb63f60371a24603c0eaa125a227a1b3f1359a1429de. 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/QMFMG1324003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7274f1171b43f785126bd7f5f97a1dc6c92f5612dd8b7dd0d1befc4dfbaa04ba. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:02:00Z), 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/QMFMG1324004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49888a9fbaa0409a46b0ea08ee1eadfae5495a55c1a60f0fb2bde3332bbf849. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMFMG1324005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2a9686045b5218ffb9a036f3c2667c3f33b1d90b97fd829dfc77aeab1bcb66. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMFMG1324006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc28cd10c82a08810238e2b1d0e422cbf3e2dc166978b0fa1ce3e17326493e4c. 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/QMFMG1324007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c21464f61f8d267f8c9cbf6cc22ca4d03a35bee4fb6dd8acd4b8569c4b1d319. 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/QMFMG1324008.
Inti + Quila, Música en la Memoria, Juntos en Chile (Vol. 1) (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb763428c446207e10565fb0bf204bcb13e8ac8346f8ac19766c9f52466c10b38. 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/TCACI1507264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547fd74e5a2eb451426f04f9745b85f2c2101ea03f6240ec54615d28c1ce2de7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCACI1507266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9984c6ea053eb264574587c80b435acd928e5390f0a4562091d8fabf73fb29d0. 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/TCACI1507268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8054d152e6575a84af5adb2c11c68071b0510e556deeb61925e694489d20ffd1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA561463916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b6760779c47363f5fe9858c9267cbba7f316deb9ed48ea84dd2ce922c520ce. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USA561463922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe209cfb2283cdfe9cb356fab207efed9b4e86ae5dfe333496571d95cbe14881a. 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/TCACI1507347.