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 0x1d5f003574f87757350c3d9762d620b96143d448b30e4f6167186980a767c386. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ccfdf895-d1db-4faa-a92a-963e5dcf0c15.json and https://artists.proofprofile.net/proofs/artist/ccfdf895-d1db-4faa-a92a-963e5dcf0c15.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Disney Entrelazados (Banda Sonora Original)
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 0x411813f7bbd73df2ce7bf8c5ae911f00e08efc32e34c63be45235bd8c8411c3e. 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/USWD12111578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7863682b633d7cb20e1de0786a5ea12e138b2ff088460a0f4026ec3c63fb8d67. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/USWD12111579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761799590c1a4254d9d9b8d767efd2409969c81eb41b8b18ac4c4082934a6608. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USWD12111577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed54607d402f778e74cfcb7f037c2459bfabb27feaa2cf149b7fa7408682c0c0. 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/USWD12111580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f28dc44c0f96686a7388b6af6be6878e8af097722f704251dfe32f54f14e4a. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/USWD12111574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5660b28510b7b7c64f99e099cce92d9d642487bc73ffd47e710b11e4782fd38d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USWD12111582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526a1ca4d8ed17c26069be93626f5590a5df3f3f0874b51dbea4a0573226e323. 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/USWD12111584.
Hoy el miedo se va - Freaky Friday: A New Musical
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c203b4da30194ea8bc5ab33e187107b779a473d97eb44992f1bb9ed37177456. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USWD12111583.
Por una vez - Freaky Friday: A New Musical
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1e2416e937d0da423b3635a3976fbc75e0e5e17255e2fc0868f858d5f3589c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USWD12111573.
Reloj de arena - Freaky Friday: A New Musical
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc82554a70f730d624dadced5b3dd041975fa13429f74e9c4efe3d422b2e71d9. 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/USWD12111576.
Es Biológico - Freaky Friday: A New Musical
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a33b6c5c0bed51e9f9d4d37178038052cb03a6139c4f03f385ceda1def1664. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USWD12111575.
Disney Intertwined (Original Soundtrack)
Disney Entrelazados 2 (Banda Sonora Original)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e32e3324d21f458fbc0c243bf569d8bc12fc7c857fd9ce2b5083c9e6e90933f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USWD12325808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e400411f198dfefa9bdd0fed6ddf989aa6701cb2a2ec032ca77136347a582e. 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/USWD12325819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881c807308da5efbb2b5383221e12d25838f441347dfae6aa1e7a421b9b8c236. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USWD12325820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fce0f294b9c6ed258ac5a3475cfa2677c459a4e0f63ddb7642363bee5fa066. 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/USWD12325818.