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 0xd73948b601ef9c6a109799ccc9c3f2d4b7f2cd891f0b7762f06ab6133a8ce6ba. 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/a3e6c69c-57fb-48fe-a0ba-dc80ffcb4072.json and https://artists.proofprofile.net/proofs/artist/a3e6c69c-57fb-48fe-a0ba-dc80ffcb4072.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 0x782c8e9ed43db808dc5a18b21185ac584ea3b3d811fe74d1e4e02ce96ad6542f. 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/BR7LC1100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd9c5d90448eb05a9aa5ab40e0407e659cef0144e370e2f86ee425df0ebf31a. 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/BR7LC1100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6eb7d6c727231f80475ec5798799c3f4ee7f6ff28e9c6fc77a395f723084081. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:38:47Z), 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/BR7LC1100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756c9d5b36fb93b93c0b01ef04c2cd511aef92c896074762441509d2ba9b68fc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BR7LC1100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa173699ca1c2c603ff49bb1a5ac73b5fee4f1472d750cbfdee3bacf5f4acadc5. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/BR7LC1100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cce4512dbc905d3e5eac47e9006058eb92bd8eb42ed97b1f83d4eac3aa2f1e7. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:52:47Z), 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/BR7LC1100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3f88d1af03ac36e129067ecca1d653a55857742f52b0940a3d482e289f2069. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:34:23Z), 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/BR7LC1400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80834bc205ab86303fc8db89fedc5c2ebab46294c2761b76dba52b9abdb7dd42. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/BR7LC1400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d1645b9e912a6ae48f624cf70f151b3ac47affa6c5365ac7d061d6e19ae750. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/BR7LC1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd03c736c88c1a83e586def36aee084b2d6e4810394aa305d5297d21a9f9800. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/BR7LC1600002.
Viva Como Se Houvesse um Final (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2ecb1e018d352971cc52356d6b8829766da74e7907f06ded8de7c399a625f0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-21T08:47:15Z), 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/BR7LC1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21dc72e5f736f690880213556250e9e29a5eb4664dee9d618af1f394ee4e92d1. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/BR7LC1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f51aa261d50f6f6ed19cac4fbcbbe0fafa78190ba6b7816d583f76d77822c1. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/BR7LC1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa604cd94e1fcd67a77a9033c83bde71648d0ed5cd3be7699e6d1c6e2b1341d3. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZ5AB1643614.
Gravando Bandas no Hangar 110 (Live Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0ae0604192ae55ddb32a2685eba93a48b236ae0ae0e95bd8a1f3b77d20e907. 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/QZHZ52028921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507b9263d23e922bb9de09613221139d583872499ea9cb3ab582a3b61583e744. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BX9IT2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5cc2ee49c12ce1aee27d78ac326632ec9aa17af3f95d2cccb78bf767e2cb91. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/BX9IT2400002.