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 0x4861a89c6488f0e3ba5ce09778611b9c3737a1d5bf5bee067383c26f86558142. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ad3a9a6-61ef-4f24-b642-c97a4008e2a0.json and https://artists.proofprofile.net/proofs/artist/5ad3a9a6-61ef-4f24-b642-c97a4008e2a0.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 0xc968d19b0d9764b97c85b8d226aa7b30e192af89e039f8b2c14475956b99c6a7. 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/GX5MY2396071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e2adf6493addd524deb96e37c14ddfce2e92cda2cf3f2c2af5b91006fff938. 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/GX5MY2323977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc865e2c5c30ba3023037de8f11e719bd4b335a54e5aaf393c94c299422dd34c3. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GX5MY2371056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463977804ff2a735e6960958c176f6c54c614986d4256ce1c9719ed458eb0638. 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/GX5MY2320936.
A los chamigos Misioneros / Amelia / Para Bailar Zapateado ( Popurri)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec71b026bafddd7a9df4d5e557c29dc29104973e189090bd1cb23ae1bec68a9c. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:47:12Z), 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/GX5MY2340473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef8a391268a3bd6fe8a7ac4df73ffd8411e5b14c24b8b77f13029871a399690. 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/GX5MY2309372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb04a69b1505bf6721fbba3771459327091682c07b12a1a699900ee67a9d3fa. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GX5MY2360874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d9220bb3300d7c837517f1888836c93a2968fbe535500bff0b74bf2c7cc568. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/GX5MY2342672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149f67f583cfc7dddf40c240e5ef1f17558b1c8a21ef532655eada056fdfe8cf. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/GX5MY2384146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3cd8edf1b3254016e6bbba5227d684431620789b7444a34e33c035d3d75976. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/GX5MY2320362.
Envidia / Amigos con derecho / Paz en la Cama / Busca un Confidente (Popurri)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe8dff1d22f07ec3af1d04c2fa396d3ec2273c2361fb9c686ce27e4045abbb6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GX5MY2366995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548a24cd512b91945acf29becb996536fd311749bcecfbac71e47064fcb4db3a. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/MX2832422084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce0d4bfa9949aca80ffaa5d77061d7700f53282d5382de883af24733d446f07. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/MX2832422086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061129711ceac14661c750cc7aee05ce1fed0f53a0aef3dccd5052272e1e6e7a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/MX2832422087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbae06812bf0cbf40183ffc40be0c292036472b2c8878784b3ada1e28207633d. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/MX2832422088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceedd2ec598a6be5f05584074b880f124ec515011fe96d2d71368ee65a777e4b. 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/MX2832422091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579f85b671fea9a2b7f061e66e85d6fe36045acd9237760cfa275fdc2050930e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/MX2832422092.