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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43de33e50047edbd4c891189e3a948527dcdc840bcc3ef2ad7e871a976aad222. 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/833a77a0-6827-4129-ba3e-25e234df0b61.json and https://artists.proofprofile.net/proofs/artist/833a77a0-6827-4129-ba3e-25e234df0b61.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d6e7e4ddff39b8b479edd463b4b19f79a1eacabd9f8abb3b8fc4bd0921f1db. 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/ES5160600437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49da7396616cdd91451aaf3243c11c71d7995d40176d4d6fe51e32b30c93d59. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/ES5160600438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e01779d47c4c1c9b3086fa5fd5474373f3fabd85c7066c0ea3e286374ecabd8. 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/ES5160600439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d59d25ad24fe1c3850dfd013506950ed920a6f686d34e7595f81810f5b4a878. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES5160700878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04871cec78e53b0d342e185be703913ba8218fb22e506c52259dda6029d08499. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ES5160700879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4b7c5ec8843bcb912fca72f89e52e6650b6abad9ddff7e7626f017db1109ad. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/ES5160700881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68d97bdd00151b6c9a0aabd5e6764f25b778076b275366e8d2abe524fd03c4a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/ES5160801243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451fb4fe4560d4ffb5ba73079ce8536dd0388eda514e7cefc59e00d923257c05. 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/ES5161001517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7c572f9197c14c6b00bd5bf37b59ec386665528f2a384249d1bfed62a5215d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ES5161001518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84804e5458a7041bdde60db54dad427efc67e2beb34e77181dd3f1139a5ae58d. 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/ES5161001524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b1419c5d3b2b482014b8a133335b68cbc8b0845348db3513843790974b65c3. 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/ES5161001525.
Tú Que Sé Yo... Que Yo Que Sé (feat. Fondo Flamenco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155d86033bc12ef053ac12ecdeb2707f3e6b4e352dac9404dfe07a6e4c9806dd. 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/ES5161001526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf4b6eceae24ea1fce0bbb8a0997cf2be447c0b8fc040b73e199fd9917e337a. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:00:19Z), 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/ES5161201813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524647e63b81f8765fe7deda27388a843759d289ce83a4ea2cac2235eba3605e. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:34:44Z), 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/ES5161201817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc033ef8510a63b40fdf1b2a429416e3de2ebe57877a825c21f35dd56d3623983. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ES5161201820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537662622a40d3500c36efc2a88a8288719aa28e54b483177d90ca6b86d728c9. 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/ES5161201822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b03b75d7852e7a9cb221f56014d601bd4736f904d341913018cc732e3bc4944. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ES5161404133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf685faeb1fc4e2a3af63568a24999100c1e9cdf35b26a524dc9d5896fa58ac2. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/ES5161404134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349af7af6c6af5a3904bed5067c54001e481c412a26afeb8a891867c94eb671e. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ES5161404135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d844dbbe73dd44b01f46be60b860a650dc3d5c43c465226b1f95b5f0125c2a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ES5161404136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0984d0a66560c632419e73975f654c36fb0410cde338b88f5bef5a2c839ae369. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ES5161404140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5579ffa09c8385c2dee50136c84b57c0d6b7aa50e74e5ec983142eb0240afd. 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/ES5161804715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b4ee3d6a05bd9c49cfcdd87f543db204f350171f831f1a708c3735c0724528. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:28:56Z), 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/ES5162506667.