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 0x58945f3270b82566442fce0e8a60b30fc48b40a88d39e05af72311e945c42e87. 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/83f2fcdf-0e95-4ee8-874f-d8b726a692e2.json and https://artists.proofprofile.net/proofs/artist/83f2fcdf-0e95-4ee8-874f-d8b726a692e2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Estoy hecho un demonio (En Vivo en UOCRA Cultura)
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 0xd7b16e377fefd58dcd2daddf14e57767b79ed4e67a7999748c6386775122c19e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ARF061501079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386471c1477c6201a5a2aee1181549566e775f1e961f94b982bc6d714c867c8b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ART0G1202422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b244d6c64b06275e886a7acd2fb19c9d2e9dbe247627e04872c3aa0c06bf5aa. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ART0G1202413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405137ff396d025c4a85b6ccbe2b06aff91d4410851482461969ba45317019aa. 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/BR03D2300510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487d6b6121e3b989d9abb74d324b0441ab6a115a457f755fdacc8ad42da96e93. 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/BR03D2300512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10d8ae139e36f0a8d62a5db52b741b033c9594cb8b2c29d00bc85cb0b849998. 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/BR03D2300515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf54ae4f038731185dfc9d594feaa5e8e3dd4331a588bd75e2136c2dbe6bf299. 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/BR03D2300516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15351ea993f8d57a418ebfa202a1c59b0c9bc2fc63b1d1c7733de7352c439a6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ART0G1202396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc213e80d550a6dc091e2017b79cf42475544370c5eca254f9111c17412fe0307. 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/ART0G1202398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f2cb99a4f0a8129b1c393efcd8086f2412da62067a2a75bd32a748483bb962. 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/ART0G1202399.
Viejoteca en Tiempo de Balada - 22 Clásicas de Colección
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8076144ff4b9fd1d9ce1a4836d7b8019cd8392f275409fbc7c28bbf9ab59edf3. 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/COF019800294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd9c14a0d2bad702a99fe772a42b9667e421d97575826b258d445ed52b9bd36. 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/COF019800289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d4f8f395ef9a2ba8d0ae8986612a90271b326c119e3ed42a104e20d148b16f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMDA61404465.
La Discoteca del Siglo - Historia de la Balada en el Siglo Xx, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0effcdcf1f1ab2af521f752eb656621fb8928c8055b3f9fe724d651366715887. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US3PP1503050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57881f85261dc1c743420b9d69d05de2214adbc2ce13e7a154e78cd65cea1de. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/COF019804606.
La Discoteca del Siglo: Historia de la Balada en el Siglo XX, Vol. 3