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 0x6e38c0365282eed4b04bff72386c488602a0b0e5e8bbdbc297add9004375ad35. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/406a7b6a-198e-45b4-a22e-5b777e954474.json and https://artists.proofprofile.net/proofs/artist/406a7b6a-198e-45b4-a22e-5b777e954474.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 0x6ec35fe688111b05718a004ce5bce5170f3ef3c8f3bc9d9c696140995dbeabf7. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBSMU5138539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0755df8c13de03e3d2ca8b86035f8fde6497dbd660b504aa09eb18355a2d16db. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:05:30Z), 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/GBSMU4368352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea599b9e66dd034985c6ae771a840f46c6e188ceb3aea3d685ec5207dac0ca9. 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/SEYOK1746041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aea40d403cbc0c57ff44ec5c67fd0710ed254a4c0b0adacfc23f4eb5579aca4. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:14:33Z), 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/GBSMU4386317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe14bec5b2d4521d8e6456a27405ce6cf67e7fc8ef5e9461fc99a700386985f6. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/GBSMU4386318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc61a031083573a4527a3f4da8e18c856e6c830f6d36e54d0615752fea1a603. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBSMU5835627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd62fb16fe833e30f8654a0871eebf971849157c0d153aa49e61274a407e817e. 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/GBSMU9092064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c15d3844f7121af1b305a117a030b477244c7e5ec20fd31ece9a37de018341. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/GBSMU9092066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67976d1e91da62a4b1e653c54732a61b3b2cbe06530d858d2b15a9e47a52c26e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBSMU9092068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b43b214eb346d9cef3a119cdc5c72bda85ba1d00a938f5adfe62a27e75b74e4. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/GBSMU9092069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6f108e4f5086e8b0c01013250f56441b22d27eaf8f9fe0f14a28074a5ce6d1. 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/GBSMU9092073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99183f9c140c24d760c4602d2883db2bd5f87b416885ec0fb9edfd177fcd86e1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:27:41Z), 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/GX38U2554317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf631a988faa2823800b2a57b0c91e31c7411696570efbe4440cb22bfd2c566e7. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GX3HH2524562.
Cuando esté mejor (with Juana Castañeda)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9f497177cdfc62430a7d8c03a70ae32253c090be77f882d839ab7cb4ed1270. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/GX3HH2560761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a467f32d6226ea2b731dce9d1d29f9afd811a1655f97adbb5dc11aa8c0188c9. 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/GX3HH2545547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6f6580f3cf64caa9af1820508d0784f2d7b0403864682c5d46ddb5616b986f. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GX3HH2561123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa839f89ba7b0fdb6ead792ed092aae7f997fac68c08e942b7b049265eb0c3c7. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:22:03Z), 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/GX3HH2556932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98fdff02cc1acf9796ce932ce0f08a5b4630f892e5c4cfa9bc6475e5144d619. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/GX3HH2587581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af8e59538b9cba29be39f5435e0b869f2e8db59efbfba28436a920e92abbeb3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GX3HH2513322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf6ccff4a81aa685b175f36aca48957fe57e24e467349474150c0cf5eb6f5c3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GX3HH2531572.