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 0x2731feb9bda5340a9baf7b73706d5ef559ebe0e26a6ad8496945107d342c85e8. 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/e3791f04-9758-4d26-bfa1-4abb1177eae7.json and https://artists.proofprofile.net/proofs/artist/e3791f04-9758-4d26-bfa1-4abb1177eae7.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 0xabee73faf2b1032773b8140c9f775a10f625cf804ac3d700d84d8b4dce5c4d67. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/TCAGF2222422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae35df709db4cfef90b25e42c1d6872244d9dadff64bb669c46b4ebb9a3f5f4. 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/TCAGI2249680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f472fcf68ea362199c58291e4371ef018468285b56a8ff48ba3538fd4b402a. 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/TCAGJ2271756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e7d62b713900aadeea8373a6cc270307fb359ae92b10b73f606d56efc38c02. 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/TCAGL2241735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f3c29c3ec212931bad870394804e82adc2d79f72dd5fc485ad1cba9060dd15. 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/TCAGL2241745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa864d293f0a6fedc0a375f00797011e72d3a14d3a80db3d0402fd7c42d9d78f9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAGS2351729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b6fd2bdfec5169da24b1adaf43f874d358f17f1b5b8788743f26f6b55aac51. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/TCAFS2194839.
Norteñas Viejitas Para Bailar Mix - Live Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5cfcec69c5ab9aac3323e276f072ba6bcdad8da34d66abb57384dd11455617. 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/TCAFS2196103.
Estar Contigo - Cumbia Light - Live Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672338365f5cdebc6976ef8fe62e7bec0e52ec5dbbe6f4571cceff5bcfcbaa45. 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/TCAFS2196143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc9259b8fa4f2c1becb72f7378a52f0440fa08183715ad519dbf6916a6a0145. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/TCAGE2235125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa517a408dbb2ce5ac8347d58c4c48bfa730d182fe6b9d9bc981d3793a83ad5b1. 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/TCAGA2224835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4a307ec517a2288f6a7795e81d86e7c7b5391cfaef845d9c391a61e12f8eeb. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/QMDA72337190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b0da3105b8bc10b1ed7a03f56ad0db6bd8fc3007e50efe2252b7f63bd416ab. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QMBZ92347982.
Popurrí Pedro Infante: Carta a Eufemia / Yo soy quien soy / Copa Tras Copa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93506270c0c2e08fef6a1653aaf2b5e1e44d45bb64738c585154682e55aad606. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QMDA72323754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10123ba3b795818e3522c866042a40490e0b51304345987bf97f9587bb650b62. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QMDA72358154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf982dfbf7745c0dabc055e400fb32a3cfe046648a96a165f3bdd948af160ed8d. 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/QMFMF2354765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e83927d96c2d13cca49abfb5dee640a2d18328719e033c86a2d9dff1f1fca88. 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/QM4TW2498551.
Regalo De Dios Y Lo Tienes Todo (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a4086881995b2b88e7d4949226168de94632be98e98f7df8e0f0eddb05fe04. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TCAJB2418007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5049cbaee9f1dc0643c911199982edc04a33f385578dc878b8cac12b77417185. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCAJB2418015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e6b168abcb5b0411a7cd375729091d096e7a554655bc73a01f33c857b63698. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/TCAJB2418064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890d5104f4e93a61ce72321ee12faf1b387aace84d1884b191c5d0c7dff0482d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAJH2554186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791d0fbf95cc3c75e394818e119d8ead0fed0599f471a7811cc6182a51659cc6. 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/TCAJH2554242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c5fa04180e2ae09680b3645ba4791631c0497aa8e3e1a4fa65faf8cbf1ec28. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM4TX2588910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9ef581e9d2b2ebbd6fb4742a8a2392f298b942678adc6332c1e87ac4531694. 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/QMFMF2538615.