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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b9794d53f71f8b721147bed4b34d27e0ad8e93f30e58249c89c3248c0b0f48. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be08ce79-68f0-4853-b7df-89c3a9525864.json and https://artists.proofprofile.net/proofs/artist/be08ce79-68f0-4853-b7df-89c3a9525864.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f8469a1a8a3109b3cd0fc41482807fd3dea5a36e5ab752ef2dae6a0e5cc5f3. 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/ESAAI0194326.
Rocío Siempre Rocío (44 Sevillanas para Soñar el Camino)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8cf0c4a15a934ff9a6c66d5d6d50c86b1aec2c3f67f047c2df2766197a7582. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ESAAI0194416.
Váleme Señora / Tú Te Imaginas / al Amanecer del Día / una Madrugada de Mayo / Borracho y Loco / la Jaca Torda Rodá / una Rama de Eucalipto / Pecados de Amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97f324cd28d05097aeac00a980b8c0478c651ebe10e06d065f50cfb09fefcce. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ESAAI0194509.
Chumberas del Camino / Santa Ana Cogió una Mata / Está Llorando / Sevillanas de la Coronación / Cigüeñas de Palacio / Como Es Tan Alta / de Salerosa / Salud y Suerte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a96e1ef00be5a5ae767302881e28bf959a173bf15a758b14d6d86c2b36e0365. 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/ESAAI0194516.
Del Agüita de Mi Pozo / Se Van Batiendo / Que Te Pisa el Pié / Están Bailando / el Manijero / Que Lunita Más Clara / Me Dijiste Que Era Fea / del Laurel Verde
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2112a87f65c768768f8f787899969b57205682f6f1c91f57d306955743288e. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/ESAAI0194522.
El Embarque de Ganao / la Toña y la Malena / Todavía No Se Han Dao Cuenta / Triana Mía / Suspiros de Mujer / Vente a Razones / Que Le Quitan la Corona / Me Gustas Mujer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7018df4237868f8950bd4dcdb5cf312999c6b4f4b57b2faabf1b8f8a43793e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ESAAI0194528.
Que No Se Leer / la Tía Pitita. / Lié un Cigarro / Somos de Dos Hermanas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663eac48a02c33a68a4f12200d47ed9414272c3a4561974ae9e17b175ffa7b7b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ESAAI0194535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1ed089f8fa6346621def19d8d59072bdb680f6ecdd020a6a04a7992bbbc858. 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/ESAAI0194537.
Tengo un Amigo del Alma / una Paloma Bajó / una Pará en el Camino / No Te Hagas Ilusiones / una Niña Que Bailaba / Silencio / Anglo-hispano Es Mi Caballo / Soñó la Flor de la Jara
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ada2abc45fb16d5efe6d01bf38e2deab12324173dbc608fcbd58e85874f8b73. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/ESAAI0194488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490d3604554e5016f0aed54b38a4354e4329765218607d4d939bfaf260294947. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/ESAAI0194491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b44074078014fa8cf82620421c09c58f504bb36cdd40aab2d56010750500c40. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:26:37Z), 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/ES5300823638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3446f942092024350d6fc4ebc572bcb79c973e1b6627ae9b3d86babff79aa208. 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/ES71G1508763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5f3aae95d510d8667b03e096950350af7c9e2cff58fce9be2021e8b91504ec. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ESA032007005.
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 0xadaefade0996e0a0f66f6ad1600cc742328cf028962dd7c959fb2efd3b8f96c7. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/ESA032009517.