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 0x1940870b87454e894ccdd0f25711f972567efe4d070ac3c8e7b3294bd8373db0. 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/2cd91b0f-224d-406d-9032-4fe1e37c4b4b.json and https://artists.proofprofile.net/proofs/artist/2cd91b0f-224d-406d-9032-4fe1e37c4b4b.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 0x1a18cccb5a802753c156a29f34fe7322bc681ee9d6292d4a3f81f77ff2461504. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES6101700164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad91798b04dbe4a8ec6beec70a33e669929a77db7f5887d4f5dd6972f30fb08. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ES6101800398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604468029931131c287826a092a9b06885fd4d3262f7d6041ad6812c00125b62. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/ES6101800400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b18cffca2a5404a45ddce4fa905d97d8008455a627a7214d2f55341561618f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES6101800401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13cf9bec8549de47af14fbe250d2be923e9b186defe8603d7f9a5b01ecc65fa. 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/ES6101800402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179a695aa488d45cadb28857b3597a9185587368d5707b00b279311189704b59. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/ES6101800404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb70bee664b3b196d73e538ef04f6813cdea529ac4f6c7dae5eb89f96861633. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/ES6101927603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e208b2ee334edc25739c94777469bae966d5beb021d50e5759664596d7dca3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES6101927611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcd3cfb2afe854c5f8dd80a480a79924d61ec7417f434e0fc6bb98243cfb2c5. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/ES6102020801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58aeb03adeeb4568586dfbfbf0cc79bab84908d44b47cafe34e47eb81e40e6ac. 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/ES6102120804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29319c8fbb6744caca55145bc25e4eb1ede2b021e98ae95994eb37a003293168. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ES6102422702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7d8651969f7a6406efb456cf1cb2ebc484c202cd863e41b7b3fbf60e17b583. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/ES6102422704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23657844c69e34df07e7f112494de326d018904413aa6a078e712e3ae82e5a9. 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/ESA011963461.
Calle de la Pena - Remix Con El Sebas de la Calle
Calle de la Pena (Remix Con El Sebas de la Calle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5126df11835a949b087de3645c23f4982fbe0a459140cb2edccde0b8620a6db5. 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/QM6MZ2300198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35870d8234825426674444d7d1f2131e4a19ff2f044fcd7e2fffebfd666f0238. 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/ES6102220807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90dbb89f8f3492c32889dc38d1e2fb3c0e28e4f5cf249175e9c54bc51c88c582. 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/ESA011716742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6ea9631cbb2ff82fb2cccda4ffa5a34659c459b9becdcacf98bd30816210b3. 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/ES6102423401.