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 0x3cab59ad65fe6c850e4530411b515c386a6d96ee03070c24a24967787a757307. 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/532e1c8c-25ca-4438-b5af-5b0a2edaf5fe.json and https://artists.proofprofile.net/proofs/artist/532e1c8c-25ca-4438-b5af-5b0a2edaf5fe.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 0xa8796699d8190dd7beb34d87d444fbd1400654f64b8a0a994a73e4229af703d0. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZHZ31929247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e1b9a747d23317366847f8b840784e1f47aacc073f1e730a328a1d312fffca. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZHZ31929248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe680b874f450ca55b4c4f7e954a8c2a821eff29c2251d04b41d71686d61ccdfd. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZHZ31929250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cb5a3cdf6e11b03b2a77af7bf84f3a2445d12983afba6774431de230b46360. 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/MXF440900829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7f22910280f87b9f8c3046d1f176301279217115686f18a24738b6a256af22. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/MXF440900830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a8e8efb3a7f4adb32eed2bbfb47f509c863215fa5ae99a7235bd0f9d939775. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/MXF440900832.
Hasta Aquí Llegaste (feat. Diego Herrrea)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284c8694a42b36d6cf1047af13fd0e012529092865dd9fa9f7717e8786013e99. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USDY41601825.
Hasta Aquí Llegaste (feat. Diego Herrera)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc690c4ba76cc9a4414699ba9e5eadc062aabbdb39c232dcde0c6403554e74454. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:46:18Z), 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/USTCD1031641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8136d70d95ca329801267d0a38a9054ed14dec24ca7c8a9905da05a769e02b5f. 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/USTCD1031642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cfbd9baef0efedb84eb805e6d754d1de416cae0b553b93db8b511e90827a3f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USTCD1031643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec972909c0dea2d465b2cd8c2f426aaa5e92f3c859175113c91ff86ea69f543. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAGX2386445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58cd642c56b4b66a90b6f9a73906f9ae528428d21aaab4bbeb628a7f4ccdf8b. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/TCAHA2389856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bba6c11484c75e75e200793c6308347f0bc72500d3b39bedbccd90faaefd4a1. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:48:34Z), 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/TCAHL2332224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bde5ca61469e3e17140418454036495bed740805c8a6fb8ed1b000fa271b293. 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/TCAHX2446677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0a6389256d0ba20f89908779b65ebb4979a1a2da3a8397c8a71c559157dc34. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZNJW2508703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4137f5afdd44c879c82cb14ad43fa07cb9ced2b5d3b0ac18431ca98bc553efd6. 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/QMBZ91710166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d06471c983cd9d3db01c5e7af91d8aed8ffee8af8471ed522dea651514da9e0. 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/QMBZ91710170.