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 0x12bdfaa8b35e2291a6a5b61c8846b59c3e6f78fd47f0911f26285c78048474aa. 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/bd7db2d8-16d9-4f74-81d4-0c22538a9d4e.json and https://artists.proofprofile.net/proofs/artist/bd7db2d8-16d9-4f74-81d4-0c22538a9d4e.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 0xe0a9a395dafec4465e9bca51add822c6cca298322b04fdf6809875f20055b344. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/ES17D1700270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3e8639a8294f1c94d82f851cc96d784b76622c82f90b327e3d2499e7050af8. 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/ES17D1700272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4665a10a929f8fe911bfbcee388a4c2b5e919d72c56d0a0837bc417b5ebf9d11. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/ES17D2001024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c8a4b34bd8e6e476d01a855c19a239a2022c507418f6badcaca3ded1f63076. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/ES17D2001006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf460da92eefe85c7c3f4e18d1f90ba43919fd3ecdc06682495d5df96aa7109b0. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/ES17D2001007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ea3cdc6e23ead8d7b071e84f9d24e82881f7254ec0569b1d4055139a1893d6. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/ES17D1900790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157e2f2dced8d821767c0e5e66c028b64a400ab8dd08b6275c48b054c19c929c. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/ES17D2001008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d655e4ac41c4860d8b6870ad2b4511b6767d3c8a9104c892442a10dc0f17d9b. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/ES17D2001009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c82cca4d1dc1e7c9553e60cf225eb9481173e700c957e5e1d4f334a7a910a3. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/ES11D2200772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d980be5186d5db06e8615015077df6022d93c55c45373166df4680a5bc035c. 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/ES11D2200773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8afbefbb55ced0ea94c0d47b386c89fdc1bf191ab006628ee7d50ba2144dde. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/ES11D2200764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ccb6b008edd7e2eb5d0dedbfe4f6d839c76a28ba5faeccfed7f83e3791b021. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/ES11D2200774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8977af7806f7ae526d17f1815d296fc04394977570bc46d17be027d4b8c6f64. 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/ES11D2200776.
Te vendré a cercar (En directe al Teatre Principal de Palma)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454da24467322b855f4f312ed9d0e517831085e06f3c20405167300b071bc06b. 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/ES11D2300916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f47dfadcfd5d1fa12617d707aa3bfb0adb8d2be109ec2fed146a8f49496753. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ES11D2300953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bba8388d77222ab082cfac0665eb7d408d3af84fcd725b48a532d012ec7466f. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/ES71G2405188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068282d28a6f44ccd59418571cddb990da31b0184005aea910cd3ff77ead45fa. 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/ES71G2405190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6926baeed4ba6392671eb9bd0f4d9786098afd1728e375734911c631abfabf6a. 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/ES71G2405191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454da24467322b855f4f312ed9d0e517831085e06f3c20405167300b071bc06b. 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/ES11D2300916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9717c7c65c47a4f77c76c456bc9d1776e4d8d16ab6b4fd0482ffd62e176d3b. 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/ES71G2405194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269fc744bafe6109210f01b385430858c5abec184eb53f4fbb55f8a0d8432808. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ES71G2404717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765b0672a41a5901afe2f95398984062d472d52c00e3cd43295bf2b996f0f7d9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES71G2405189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5280db629d424f5e23006a89f77e96a36f1a219e618033e0977a5289f4eb7b2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES80A2217504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e200b26bca75b80ece00dea23d816fc3085349929b1604d8866a17503ffba6c. 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/ES17D1700265.