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 0xa700c09dffe04420fb3fa7866452553b5b15f4f14334b654cd70246e74040e04. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/588cda0c-9b78-4cdf-ae7f-363d2bf0f312.json and https://artists.proofprofile.net/proofs/artist/588cda0c-9b78-4cdf-ae7f-363d2bf0f312.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El Avión Ya Se Estrelló y Yo Sigo Volando
El Avión Ya Se Estrelló Y Yo Sigo Volando
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 0x8a110c85deaea546b1ca45d6736b4da719fa45dd145f5afc44d5a7faf9901169. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/US6R21370856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b18c898fdd713d7fb2ae5d12d26f62efd552287ee43f8b70335dcc93b22c7d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US6R21370857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a7360ecc7db667f07a8fa1de0e4163c8ff8f780893215e04f59dd4f20cdea1. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/US6R21370864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4d94c0c900a4500c8c5b8390496e9a4ff2cf1f5541c650fb7b1e865749ca36. 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/ARC290400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd429998f8ca84eb6ffb3647143da765a95c4f9c220e82bf591a8bae0fc417f87. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/ARC290400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbe4d474f50d5d6d5c05cf4e579e66909f3a8117c58afd34b0e5ab812f52f08. 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/ARC290400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54dd15c8a80d3cb60c6194b2c01110be269a5736525d1a7fe29a6a3c77606fab. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ARC290400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8923c06562709cedfe2a793529e5f6dbd09b2b9a78da93d03dca1f751b89fc. 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/ARC290400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48869c3f4f0dfa5c4d98cca4f349a06dc2bac53c9c5c581cbdd53e523d1754a7. 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/US6R21312245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3093a9221c88914c24817659543df4da3df3b9d34b5bda464cf77e91f85cada. 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/US6R21312246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4d2a0a864b48a83512375e70c634a8ea05a332514ffffb368dc7e3b63b6540. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:17:17Z), 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/US6R21312248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19e5ace6231e1a230d5e0331b93acf29b86232ede470c3407d2e895f49f2705. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/US6R21312249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a0e3eca97e50f44aefdc37fbc3b7421d4c229dd969cea0d5063a3ff0eb6929. 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/US6R21312250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cbf77c51834bebcc9e688f861bd784c261581f9541ccc7ac9a31515dad7380. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:48:27Z), 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/US6R21312251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cc6cd0119fc36bf8eeda0ab5dbd945d7d3a1cb9508e1290f11118a9b7e3a51. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:08:57Z), 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/US6R21312252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc96539e14cd3c4611faa9386e628bec6a8a5d83cb45706cc2beeb76da33e69. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US6R21312253.