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 0x3123432d0e7a121deb50871ad507e75d742670a29303f2f05010862a7daf3169. 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/29cf4759-f533-4512-b59b-f8669ece2746.json and https://artists.proofprofile.net/proofs/artist/29cf4759-f533-4512-b59b-f8669ece2746.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 0xa467840ea892b5ef198acd4c8e4810cb57aea0d0feb99d5996bbcb748fe22379. 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/QZDA42299036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e345424e584c86457662a0d720013903ab2c67cfad51efec1e37129d746760. 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/QZDA42299039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706ec335ed783c8078eb3371ac44ff40859bdd0fa9ecfe7aa633e7257633e93a. 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/QZDA42299041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1651bcc968d3570d9a5aa7b69666761058702cdf65179f39819a767f204908c7. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QZFZ22308776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b12dabcfe10bc4b7d45f4397704265163616183d4bdc6dec25f03efcaf26424. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZES62312652.
Pop Bélico: Ella Baila Sola/Amg/Fin De Semana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7283c02d5fc96066b4fc7fe34d4cf8b674f6d90205ae9558e15388d2d3aa14. 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/QZTAY2352926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd39a744534480761323bfb00aa407de7b0e5d8dade911edf89f417baf26e7fa. 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/QZFZ62495967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3960b3d8d714d52fb6a47793478106593394fa661b7c62f937c77f2dc71045. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZHN52473262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1140234114727829851970a83a2b3a730c845890548b6802afd955e42b1329. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZK6Q2478134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf416df90d7d5712ca5e2c105af9c5d6c44f782259166a65f63fd0063d9ec63bb. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZK6P2479456.
Treinta cartas/El Tarasco/Cuanto Me Gusta Este Rancho (En vivo)
Treinta cartas/El Tarasco/Cuanto Me Gusta Este Rancho - En vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae16c09d05e8c09fef42135dee8ac238550aa5f89052e3d8631f8fe044f1b0b0. 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/QZK6G2498957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6895b026dc270c746d03d315c643d0a29398991bd3cdc7cdd771b3d8364c96. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/QZNWU2428529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1c72836f7898dd2324474331430579ebe097085eb1c49eaa6f167300fee49e. 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/QZNWV2474606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a9acb909e1ec583c1e600f29aa5321f5c16f432885b4033c039fb9d47741eb. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/QZTAT2426394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01655ade4eeca098995e07b48be5910ec6dcb55ed820d9734973b7e6d94a606e. 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/QZWFG2445841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7717dd8487dd0447b08d6f2894d2472b497bf826632cfdf9920b8909ac4ab48a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZWFH2476147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785347412e41532ba4951fc93dcc592926cca97c1e5740b330f0f3403473e3ef. 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/QZWFX2412584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97075176907a8c7138e04e647fd3c0527d538997b6057a1544922280b0e64132. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/QZZ7M2434054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e77ed0bc9a77ba45384eebb1bdcc698d7ad6e9b86afdb5ab5430518cb748f0c. 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/QT3EX2451188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1271379ca93a3d9a2eef467ef2b530097348433a1929e248d0d908e82a28e0b2. 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/QZTAZ2548565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904ae8f5e330f41ecbb694a1ba8cf9beb4b1c70f1d429081d7b00e2d4f30aa9a. 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/QZWFE2540614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d51fb3017cc0610279fc8312ea3ad2f389582d83e035191280a8e17daccb05a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZWFJ2545728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bbe031e0df32f5dce2c89907578da0d7d59ed47968a2f89c075d0edf9c5f77. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZWFQ2537090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438015103265895d80c7caecb36983fee085fed0dd6756c243e37f3717bb4843. 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/QZWFU2570645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206a9461b4b7edd6ebce75df2037bfe818b495e7e1cd4d22252aa5654d9bcb0b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZZ7P2593292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fa48d27ec51d57c7688e07bd6f1df5afe81ffafc613cc71141561ad653ff37. 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/QT3F32553432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf7a5980e455af9beb2d1839b3f06e7c3ac467a6a1025fe8c6c0cd866e6672c. 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/QT6E62530060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf27537a1a0b41361a84c8e4f04f66004cb4f1ae794cd762965c979a72931da4. 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/SE6XW2354030.