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 0xf7bf73f91ed79e55d0363714a29666852350874433d68229a44c7cd0eb174e54. 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/66ce882d-8011-43f7-89e1-5a3a8ac4324b.json and https://artists.proofprofile.net/proofs/artist/66ce882d-8011-43f7-89e1-5a3a8ac4324b.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 0x542fda515a9f492c825db08745c4db97b998391145692a21d2ef393b7dcf9b10. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/USE7D1100207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdae46f3fc73cb116725e6a55ce2ff69cdf854c2808829339618d5cb02788902. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:04:13Z), 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/USE7D1100246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89914e3dfe9184af2e5f8277dbff7c55739362466c70faee1a3c190d217a219d. 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/USE7D1100247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4706add0330fc4088c1f3b3f43159a57560c65a40c75adecf50c2f71c37fce5. 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/USE7D1300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6c56cf2df09fcdb6ddb21dbde3a007397dd8f039c28834e1ccdc956838f6bb. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/USE7D1300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646fcde95dd9643e0a47827cec6c98dd7314a8111228958cc6dc43c3f880e9bc. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USE7D1300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484cc80e116ed225b2f7b7d2a5dd8f0723487b6d6e9d2e115373d374c24708e4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USE7D1300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610e6da43c26ea3389cd8eb76369b8d730d95f415469ed1f63f535e8b8691615. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:35:57Z), 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/USE7D1300246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8fe83abdfdaf3b071013414e8b71dc223f7db241aa6e805314876f57910a52. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:10:16Z), 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/USE7D1300251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c10cfd5621136bdfa8547eb0ed2c5f2ff2aff451c9ad0cf2aabbbba7b17cbc6. 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/QZCE61879754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe202f185005c866bce764988a09dcb38000621c3c1ac079177137893d0a871a9. 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/QZDA81962674.
No me pregunten por el- Nena Guzmán (En vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dad72fdfcfd02cf52b2c07c0ad7afd6c03f9b3f94293b1d48db396dbdb93de. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:04:10Z), 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/QZHNC2357043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63eedd031f9f6525e95f9cf81dfc1d83f5ff41d63446c59f5860b1c561e087ef. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:59:36Z), 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/QZWFQ2502510.
DEL Records Presenta: Enfermedad Masiva, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542fda515a9f492c825db08745c4db97b998391145692a21d2ef393b7dcf9b10. 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/USE7D1100207.