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 0xc44e012d73c77866ff170a123afeb2056e85136020a26763badf40d9d96e71fc. 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/204df699-be40-43b9-84f6-f2f810b1c8bc.json and https://artists.proofprofile.net/proofs/artist/204df699-be40-43b9-84f6-f2f810b1c8bc.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 0xba5f8a048c939c16fd4277f302ae7abd58c1d2e8d22d115dc3903d1d9cab3c0d. 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/ES5019988001.
Coleccion De Favoritas (Con Bonus Track)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699677e68ab8d4704ff3e541f32304b3d5dfe03aad84988388f3d613db3efa18. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/ES5020100166.
No, Por Eso, No (Quiero Que Tu Te Vayas De Aquí)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ae1dff9c88cb0ab349a7c4860be134e82f3f0038aeef7b688036105d4f0476. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ES5020100167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87193fa080786a28a138f18fef78e678b7d40e241f849ab923fe65974ba495d6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES5020100168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f9f0d41ef10cc5a3a498ac4683f6213b1ff7f5907dbbf08d12b692cd0de060. 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/ES5020100173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5f8a048c939c16fd4277f302ae7abd58c1d2e8d22d115dc3903d1d9cab3c0d. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/ES5019988001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f42825f0b04dcfae9131b3165b29bc8ca5a425df416610cf69e2f7586418fe. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/ES5022000825.
Pop En Español Para Bailar (Streaming only)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f42825f0b04dcfae9131b3165b29bc8ca5a425df416610cf69e2f7586418fe. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ES5022000825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3691c9b69f0f407516dceb64b490c941167d8a9aadb5595418464e2bc7860f7c. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ES5029100115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5c9cbd0d557a71e17bed381fb3e930d2896446b8eaa9b9b3341ca61a412491. 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/ES5020100165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f42825f0b04dcfae9131b3165b29bc8ca5a425df416610cf69e2f7586418fe. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ES5022000825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5c9cbd0d557a71e17bed381fb3e930d2896446b8eaa9b9b3341ca61a412491. 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/ES5020100165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f42825f0b04dcfae9131b3165b29bc8ca5a425df416610cf69e2f7586418fe. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/ES5022000825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3691c9b69f0f407516dceb64b490c941167d8a9aadb5595418464e2bc7860f7c. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/ES5029100115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbab8b01422e2303731ebe1c3fff568094e780eabbaefce4c03b4e4264499d7. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ES5950200919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3691c9b69f0f407516dceb64b490c941167d8a9aadb5595418464e2bc7860f7c. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ES5029100115.