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 0x231ae5f54ce14c93ebcc2bf04443ea24ac2f35150cfcd27dfaf0167250b99d1b. 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/22b99b71-e5a2-4d91-aa1c-ced1bdaf12cd.json and https://artists.proofprofile.net/proofs/artist/22b99b71-e5a2-4d91-aa1c-ced1bdaf12cd.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 0x62196f0d98cc2f7503c53027188cd2e66bcd612e8ea357407d0c36da41da6886. 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/TCAEI1995273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d42c7655a93d74f298c8f6094e3a7c53822dd9906f147f2294da0f9208c4177. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLRD52331200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10642ebf91ecc601b473f920c4fcab21f7bdca8a2b92b0b92f88c1dade10c5ee. 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/PLH492213098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8275156c4e781bf8a21968223e5622747bcedbe0a2d16c364bde761db2be3c18. 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/TCAFE2032343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106511120fb5ea1129b324014d183dbdee7643d65679bc64589ccd65f6a60f3a. 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/TCAER2087544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce35a7334342263a9fcfa7d4f6a2fe08c306cbf11586c7ae7e82e144024c5b9. 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/NLRD51632936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48e4c62dc6a61b6d4e553762cbd7bec17e89c4c5e0ec316883cf69fc870a128. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLRD51632937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3075ed0cd258e9d7d1d42899eb6aaac4ec13ceeb086aeb34c5baf7c89fd2d3. 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/NLRD51632938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc28f786b388e2d708c4e7daeb0f2c5c35a46920e3530a5a68a93dc9dc7ca8bd. 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/NLRD51632941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223f72cd08c98b96fe135877db0d24345a747014f7d6a0366dd075e495fccc59. 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/NLRD51632942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63452a1cc126f50258b29308d9f796265d473bd7f2cf0eb00c91497b231357b9. 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/NLRD51632943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1ed0333e163145795d543257bfb1636004c13fff7e9a707ae34ceae0f6ea34. 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/NLRD51632944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe863f179187a7d8b88332df11af18de9c8cb6a167d98d68517f315fbd14e5dc4. 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/NLRD51632947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606906b9788a01bed8a08aa3731af7a70cbb1c4bf4eb3bc00872ff4318fad6ff. 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/NLRD51632948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225dd6e5542896da6b92e0da625339c1aa7056bc3b7caaa3d1d4b949c3619a34. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/NLRD51632949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e13ac32c31d9662ee3cefdfac3bbc612f11f2c0cb24f38e9978f56a415e39a. 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/NLRD51632950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d628e2a4d24f7eb58cb8fe4ff4595b25448aa793569c4d328dc6b8f38cef333. 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/NLRD51632952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4629416d8edcfcc5bc739c0ec845c3f3cf797be096cf48eb0293d2878bbd6b. 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/NLRD51632953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c16229708bb9a6c83027fcb14a0596005cc6bf79f9b766d7e561cd857d9a877. 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/NLRD51632955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca62198690965aae621e4a95f53eb6df265868c9e70c627c67ff03da1a27480. 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/NLRD51632958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0108ed3e643862bd19b6d6afb152f65b14d84229090c3df86d6f84836ca527. 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/NLRD51632960.
♫ I CAN'T MAKE UP ♫ (IF YOU'RETM ɦǟքքʏ OR NMOᗡ) ☆+ . ˳ ©
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472122f0d28b0be51adc1ca963bef67511562afcef1e4c7e940d4ffd53318e00. Chain 2 (Bitcoin): anchored in block 960165 (2026-07-29T23:29:40Z), 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/NLRD51632940.
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