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 0x4d15965f19c0c067aca3931386319de92df7c38f38de4b3039a46c4d66d6258e. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0988881d-6cd1-4729-9359-4d81224f611b.json and https://artists.proofprofile.net/proofs/artist/0988881d-6cd1-4729-9359-4d81224f611b.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 0xe12c67b7fed88a5f6cb04e0c9c15c4a8daeeff3cfbdf16038373a615e363b660. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZQAY2364881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1686a4f7656af67983b96e9f51a947d604cc6fa4d875424db0aa02d6485f89. 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/QZNWQ2578176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebbd54d90165627014cc3d4288867ba5160609fce2cc3355f9fba63413c2056. 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/QZNWQ2578175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c49704e7992e663ee2fac6bf136da8abc25bfbe39bf787d50b6ad1513f9bc4c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZMER2569035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a54361508b609a08234e945d4365610d7e0156b1be8da735bcd229f231f6720. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNWT2552475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f38921ca0486ac5067b6231818825ea0969d7b1c55e9a7d54f082e3378714d0. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNWT2552473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc155230480ce31090c43005a5b8e83e58aed0c192e85294e8ffaf92d64b133ed. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNWT2593160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b79b01a712d1f768077905c50aea749def9a54cb3cc7ffa31c5e8b360fd7d0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZNWZ2516415.
Antes De Ti No Hay Antes/ Amores Como El Nuestro Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e8f57e7a55f4ab0f6ad74e1670283f25d26daf5fb25c9e4bb2393b0ce9e993. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZRP42569308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5adac8e2443e9af2c040265a50ba165d113cae8a9dec59295d89d2a005df3a2. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:31:13Z), 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/QZTB22584227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b3418efa50ffee01f231335f59e4540a6a1adefa9983c9b3510b73c416dd4a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZWFQ2593989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719e106c7d27d3897aefc05d0db3265261d67c1b8b40eb071887dfde4d68d6db. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:13:11Z), 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/QZWFT2572509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93503e94538d25f8069d508bb6ae3349d75edc210ebf9cd15aac70f9e09d53ad. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZZ7X2531323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aea1b6e516ef6353335741be9b0195363691f6890f0563e265e8057aabe74b4. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZZ7X2529049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cadc29ce163b909a57e6a49aeb9796dc3c4c1c1d1e4f935563d8a0754c1bc4. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QT3EZ2508605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25710df3c32922229e5489dbf3fa7e7111781d0e1b2ee08ae9f59cad32c38f31. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QT3FG2549767.