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 0xf13a338bb4a72339ff79f3b32fbf6bbb3eefef708f349af0c51c2cfceba87633. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4d8b1521-5b19-43cc-b6f6-5d9e4e7bd412.json and https://artists.proofprofile.net/proofs/artist/4d8b1521-5b19-43cc-b6f6-5d9e4e7bd412.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 0x907c2df8ef8cddcb10c30b949fc3a7740312f75bb7815bab049baf747642fea6. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:00:30Z), 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/QM6MZ2008486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe13075312258b4efd6a653bf22ea9f1540eb5e0eed6433187587e21b7fb55f6. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM6MZ2008487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37d76258ea2b49af1641fe36ee8e988994005a74e9b855c28bd4b1de9d2d4ff. 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/QM6MZ2008488.
MIX Simpática y Muy Bonita - Vuelve Vida Mía
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247e6a0b3b855d3fa3560b60907d9f56b40c08048db7733048cdbe72e869c0d5. 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/QM6MZ2008489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a377297d324106d9359a2142db52fe8d23163d142ca1df6c86f7efe0944f52. 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/QM6MZ2008490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9eb6f078960536efd728bfd0ce1258f093b7095250fb703a36240d18f84004. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QM6MZ2008491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce9aeeffc7c77942a671ee9957ac1603548ba8a3ab94411f001bfefaa6c0a47. 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/QM6MZ2008492.
MIX el Sinaloense / Por Qué Reparas (Por Que Reprochas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce210f6c1c9399a0b82ac0a5dc7c1566760a9cfce3583f4cc07a7b82e1ce2850. 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/QM6MZ2008493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d43f5dd25648f53ebc41ef2fb0e11b031d3b3d8e00fb8e8609d6823ead9eef3. 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/QM6MZ2008495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6ad7ee39be70aa88af1e4681600256e9009d97144d646d74bdedb0e40e1985. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QM6MZ2008496.
MIX Qué Tal Si Te Compro - la Conquistadora
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a2bdd727139f94d842863972e1fdb8223c5c500fa146b8b550673a525fd92c. 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/QM6MZ2008497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2364eeb6e1e1dc0e9d168decc21f363f296cf63f9dc0453a238a6e04343e182. 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/QM6MZ2008498.
Megamix - Bailable: Fuego y Candela / La Telaraña / Si Es por Casada / El Sinaloense/ Por Qué Reparas (Por Que Reprochas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb642af7acebd6b4965efb50f4aa1b2466ed012ff4469b8bb094d7dd0947637ff. 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/QM6MZ2008499.
Megamix - Yugo Largo y Yugo Corto: El Nido / Voy a Tomar Unas Copas / Por Qué Te Cruzaste en Mi Camino / Quiero Que Sepas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3e4b4a895b24e641bf44a590447dc98fc148884d03b5c76cd992443a8829d1. 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/QM6MZ2008500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9e718c3c5ce1e3eb1c7cfe64f47c51ce2e3678393943d7b4230378b52d130c. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QM6MZ2008501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735cb990bba1b245fbf14dc7b96c175939b41bce1b6ee9fd27dd635805256396. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:03:43Z), 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/QMFME2062005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd492ebc0e6c4b8a820030dd3656af210f3c64eaf9bde5054dd0a364fcde6e2. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QM4TW2164542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7a9e46154f9d5273b158562f7bf67887703fe5ceac8b311be47b9039b5bf34. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QM6MZ2120761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d48e15644f473c7de734ef366ecf9420bbab3bebcb1ba8a3f5e7a32b36f422f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QM6N22365606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e399552c1a1de8c26de91e849aa9494674b57fabcd86f13d8f5d25e2de5d45e. 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/QMDA72396748.