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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d42f1b88c177623c2a9ae5e8efd172dfb986e518be5133c4f665f748f84f9a. 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/accd0979-52b2-44df-9373-d18a5e01b4cc.json and https://artists.proofprofile.net/proofs/artist/accd0979-52b2-44df-9373-d18a5e01b4cc.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b658690ad73979a987d147c475ee33aa68a57c0082f1c0e1b7cd9dcb90ad0f3. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZ4JJ1949667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abefab31b136c743fc597d1e90c0cc6e2253a7aa6ab5ca110d41947e97b19fc. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZFZ32061762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4282169c70c8151f00895fc977a1e17c1332e3d8de02447be96885e7b66a75. 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/QZHN82159360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda3bcd6e2336f711e219df81152cc9257fdbf0e2bce9bd9c3ec0807f13ccc46. 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/QZMER2206941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3bdc09cff214d3e131fad7a4edb322981a5ad13ce757bd256f35ea8b8725bc. 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/QZMER2206944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6535f540fa70fe9c65594897a177dff1f40462b1a57aebb87c25a6e2d123083f. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:39:50Z), 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/QZMER2206946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7954dd28571a306ffc1c2650bd8f7ea1a9e4b5692429b741750af53b61e1dfa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZMER2206947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb9411bcb73fdad17eed94d7d933a2e5e47b37c0ad96c1d54df33d7446c416f. 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/QZMER2206950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b98de1239526a0103786d54e8a0aa2f424b9db5a68af46d028cdda2214ebfc5. 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/QZWFL2314788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9720ddb442bec0c4e02b3a0b4dd9dbc5f7170d2216dec9090eb9cad2037baa. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZK6N2482501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4263b0f40fdc0cf36c219c8aefcd3ddda0816a4afbd9499a17a6a2c8cd4a658. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZK6H2472472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe6461ca45675c4fd8afd2fa10879877f97b35eb097bae181f2e369892d5725. 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/QZK6F2454288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfae8811afeec4d41baff7f19c1921771e6f1391b0562e2cee052ee67481b17. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:48:04Z), 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/QZNJY2487033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c24baa888f2e269fa2be12f43e89b73c816b166a0a58aa4a8e9c21a2002308. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QT3EZ2475047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bcf20c3e0f6e90600ba01e7839195a94265421696986e2670581ae43ee949d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/SGW502552325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d8654c489ad4cbfab933f776cfffde624892dc36c2c142de2fba9c74b19e6a. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/SGW502548730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063624cff77f7ce2d5e753850a1544b6f2b7f4525b65628bb3872184c06b2dac. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/SGW502570237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5d6843300a36832f30fd8709561144186d6d671361f7836ceaed87a63fbad3. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/SGW502517190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd76dd1fe89f41908c05f43680f0d2136d78ce88cc9dca9aca9f9407e7180f24. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZTB92557396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9110e37354c5d0d7b9f1491844a81dc280339b9c9a2f068cad658e0f6c9fbf70. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK4DA2319232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696beec8ecdb1c598b6b0c66dfb8334c45ec484b311e1256f2f6d4ac4a938df0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ZZOPM2229001.
LA REINA DEL REGGAETON MEXICANO: TOMO I: La chica de las poesías
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92922efbb4cf97286a1e93ab099da5a831f3dc519c729b3cd5e9ebf5dc4b0394. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BK4DA2451190.