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 0xb62f57b4ad5561761f49f6e947a0c678b1ad0f5ebf2017ac4b0860adfbcb1f96. 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/8bdeeb80-1ba7-4deb-bab6-c7ed1488564c.json and https://artists.proofprofile.net/proofs/artist/8bdeeb80-1ba7-4deb-bab6-c7ed1488564c.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 0x3e1f156a46650c72cc6cf5243b8b1c20e994b10375a799aa4ee94981cb0a77f4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES71G2008353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f50034168ac851bc423c0a85c1283c7ef7322536d137c0784e127ddc622749e. 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/ES71G2017959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd15ab39b8b8d7b244c21cce1cb32a76737a9ccc97c0ff4a30a7f0e1008bb3f0. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/ES71G2017980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb710529929e58ea1321b89e5f3e0bce7ab5dee7133a169ac4500e291fad14e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ES71G2017977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0d5e55f07725f83a76656f63226d826d08f7d4fb45740afbecb20a49a6b84d. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/ES71G2025359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea0afd0bd5f2e91d7758211d3a6125d754574ace86a0209fdd70b782a69f35b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ES71G2040252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1cef5cec4f6922aa446b8319a260723a99b02c49d5113063559dfa8ed43cdd. 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/ES71G2049399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42362358d7f8b558d1ed72fb97bf8ea7651b12dbf563d9eceabafe3cb4b1c996. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/ES71G2053021.
Mundo Leon Rap (Canción Especial Mundo Leon)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817a156d31543be71988939ca37d0b223697a21b4cbd95ba2d40075bcb08118e. 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/ES71G2117185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370bb06edb0b934230c4942aaa9c3302f9d1177fb3bc9e5bbaf5caa609c3605a. 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/QZN882136392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1c752dd20a163db67e19eeb07f3d75832babc61cde99642b899a2d1de23de1. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZN882217964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b916a3e4fba81ff91d1d52078125a62c8eb94424e3d93977770565bfa0b00a. 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/QZWDW2204107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67c6e6a30fcf7ce1ecaa476ba6c0ef034c473b589808d3473a64deaacf91391. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZWDW2374118.
Creepypastas vs. Películas de Terror V5. Gold Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0f37e6d6551aeef9577a126398947b5affe6ba083fb36a78788946b162a550. 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/QZWFQ2302960.