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 0x6eef311df5bdf82dde7e1d40dddc6e25e3287506a96608389adfb31fcb54c2c1. 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/f62e1424-fd57-470b-8bb3-978a0f73c872.json and https://artists.proofprofile.net/proofs/artist/f62e1424-fd57-470b-8bb3-978a0f73c872.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 0xdc3b3dade0b6094696acd38104af0c2340cfe2e679d6c8e55e9ff71057d5b267. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ES5159808110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879e6e3bfa78c612859324351e359099883d9c8ab33fe37a7b4a24b22843ccea. 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/ES5159808111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c00542d3a1a36a25bdd043da7efd8250a3d5a86f76e7b8bc2591b80ab527b7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ES5159808101.
Alguien que cuide de mí / Al fin sola al fin loca
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1708ecc8efe94070aeb87364a7510045d18f59fb66046987552946b1bf6850. 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/ES5159808112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2243e132d7bbb1abfe180aee01a4a49aee1fc0f794869af2e0ee353e0a14473. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/ES5159408079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69bcffe78d1d97834c55b00990cecee667d28efd2be3f74de914829056d633b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ES5159408080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059e80c31f2b864e5d739592642d5ae067d71ca5025ceb4606e2d5dc03ec3b73. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ES5159408085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0aaa923f9a17cce5254c121d47c168f1ba469e782372593c97d77905ac9741. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/ES5159408086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfe1ceb140764dff575a9603c87e8bd019dd0e62fb8e55f9ca2d5fbbd598948. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/ES5159408087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f49dcb6f0f88507f57ca509c59a3e4f61be9bbfd7b5fcd5ec52408c0961478. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES5159208012.
Canciones de Carretera: Conducir Por España
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4744e6dc1cd97a1447a05a7312a11b78004bd6601f2f52b3f2369610034cabac. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES5159208016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf317983d6f7abfffb260b480e96d30b40ad012c03b404a56035b2ce7bdaaef. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES5159208011.
El mejor Pop español de los 90. Memory Park
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4744e6dc1cd97a1447a05a7312a11b78004bd6601f2f52b3f2369610034cabac. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ES5159208016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4744e6dc1cd97a1447a05a7312a11b78004bd6601f2f52b3f2369610034cabac. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES5159208016.
Las 100 mejores canciones de amor del Pop Español
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f49dcb6f0f88507f57ca509c59a3e4f61be9bbfd7b5fcd5ec52408c0961478. 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/ES5159208012.