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 0x7c1cd2f4813457e84c396146a49c42892c57512a8c0c06c6a194101411b1dbff. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6dc99793-ac8b-4642-8e42-15726624f253.json and https://artists.proofprofile.net/proofs/artist/6dc99793-ac8b-4642-8e42-15726624f253.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 0xf4b57c16eabd6c3da83e3b87abcdd89d7c7cd1dd8c08784aac43c7b709a1ba5a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTAU2320253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65a2f2213dbec1cca66aa4fc414f2ab676770c3e00b6294dd6fb6c727df8ea9. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:20:32Z), 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/TCAIT2450219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0ee80ad43a3f86b576271e998f93c6a70d9267b9afb557d5257917e072cc65. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCAIU2450227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4289e98474e955dec0112bb691804e13049920aa1133ee302aa1c152b0fe776. 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/TCAIU2450238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1fbab8047e353e6cd75412647725308d5849b44e020a590df7419dc042308a. 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/TCAIT2450249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf5b63f0fd8ea69898904e331a1e5458830293527aacd8535e3a7ec3451fda5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAIT2450255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7473ea3759bd641fa073206f175435041e053c85300fc6b0b108c70e756e488. 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/TCAIT2415923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5ddde05290ef8952c1537edb3fb2c23eb9e793ff411854bef85f78cfe16ddd. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAIT2415936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06f4b68468deb6e0d07b40ff5fdc9ebd622465b1a1325623171368564cc1405. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:25:50Z), 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/TCAIT2415951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1d7bf82c5152518edc0dc81d38863e26ba480c9aa5e5051a74c2dbac7de4de. 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/TCAIT2415987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b52a6174ecdc3964e3c20f94a2a5ff3c350a30f454be48ec1386f2d4b43ea5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAJE2431373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7c42dfc1ab42a91b922c4d854b42e6a17cd5c52ee4df4750b030472a41e318. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/TCAJD2431392.
Nuestra Historia de Voces Edición de Oro 25 años
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8796eff226e30228f7d037f602b5f0b1d9cb870081b8ffecc59d4d3adec7cfc2. 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/GBLFP2486486.