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 0xa09d8bef32a0eb18ddf1c2b01cafdcab889dc3d3d36bbbb00c97a1be60c2b4c9. 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/0c70fab0-6c5d-487d-accb-47cb68bd0a56.json and https://artists.proofprofile.net/proofs/artist/0c70fab0-6c5d-487d-accb-47cb68bd0a56.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 0xce79f4fc9cfc49c05fdf364a08dfbd96a24de71b813984d32d46169645e850d3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES8241474303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45db57ebd255af22cb595b89513775c85470831161bd3d53242ff78e85a2bec. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ES8241474309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d568a8c13dcd3623655c6393faea150fca227403c325d2ff1393cb3f4a06ee9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES8241474310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1e982638ff0b2cba3d35f70560ac48e9e32707f1d3fb3d41cb0212ae4f3b49. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES8241474311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5694c655fc16f86c5282202f8b149cb06079fa6220e480eb788fcd11a03bf0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES8241474312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe580c6ecc90e19dc2df48d96f461f766296d70cf41a6c28aeae63d5c6ca67a7b. 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/ES8241474313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2accc8a3fa9dac8f96c6e0aebddc0be276abbd60e72bda58a38b38ac182589. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES8241474314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406c8d522615c11f2292b28176ac9976710cca2dbd695ccd1052765c6975cfbf. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES8241474317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53dd59724abb24240ee269f1177a5db67e21ebd2ca02ffe9d2cae296cf666d2a. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/ES8241474304.
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 0xb9e5463705fdd430769144f186faac1ea17f74e9975fe222f616e773d273546d. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/ES8241474305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652d8b90b8487b8f067ccaaac02a7913f2dd844d1cd142ace46ff453ad7eb181. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ES8241474306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1211e9e4a05575ab9074e86a79c3aa4698cdcdda116984b06af53944ca430d75. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ES8241474307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd6bf70d819f7dc786e1f46ed9d4c2558b5c39fcc08e50c2ac5c4d9635b345f. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ES8241474308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66de5f8363f008ae57e24fc50fd20e453d6b08b4a2992804d73bcecaaa26318d. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ES8241474315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8375b5ad67f4665cccc7222471de8972de67e4b6f98dbdfbbb9803140b0710. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/ES8241474316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30a09040e71772c4fbdaa22e0b7963c6e515331b9e68756372007716065b818. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ES8241474318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7691b0faa7e62d23e88fc376fd4c4329650026e2d09b22448ec5b1aade51f731. Chain 2 (Bitcoin): anchored in block 957830 (2026-07-13T09:15:55Z), 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/ES8241473904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625458d11f58d354683fbcbb8f558f07972189a4cde6eb15cd866aa45ddea60d. 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/ES8241473906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455055e57a8ff450be11b2fefd94e46d96484a499b774bfea49238c2527c331e. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:02:36Z), 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/ES8241473907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a6e553facebb50c72bb6c8aea8e353419bf23e1ee84bbe20f01a7fdabdc3ce. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/ES8241473908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfead771e4b46265225991499f6a6639ae2b9c2acc55e0439434b0ffb7beb9e6a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ES8241471702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7552a74f6a89aebe5e17f02e9c60a18c209ef62826cc1fa1fc9e195429f073b4. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ES8241471703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516064479dcb001c53b5e191cdc67e42cdc70306551c3ef939b53802b03e04ee. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/ES8241471707.
Este No Es el Típico Recopilatorio De... Hip-hop
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57379db2446d8b0b306042758f6e338e98ab5316b56b8ffc4a0ebe177b9e741. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ESAAI0163870.
Rap Sin Color Ni Banderas (feat. Dave Bee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2074b33b2d1ef6ff8c43456e9a1f2a0c757f3c6d46c0605aeab5b73735087763. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/TCADF1796886.