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 0xa1687d2a81399d5652a476bf9355d858a7381f61d01c8831e3cd85a6c32338bc. 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/31d39447-0cef-4fd4-a0dd-b69fdd3cdc52.json and https://artists.proofprofile.net/proofs/artist/31d39447-0cef-4fd4-a0dd-b69fdd3cdc52.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 0x5a80cb707d9fad62195d5e1bfca6c0d5c7d5996e8d723dc52d0165e73951ce08. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR8Q22305034.
DJ Hybrid presents Welcome To The Jungle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bcc3a7fb25dc49d228be4a2579d6d94d46f7c3d102ea2c62d9e82c36249de4. 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/GBFG92100359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3933a5e8c9cd59da43937b0b7b24f05c40c4023823af2bd6d5a7f9a4b790aa. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR2R02200280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3933a5e8c9cd59da43937b0b7b24f05c40c4023823af2bd6d5a7f9a4b790aa. 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/FR2R02200280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295ef12ca1a967bb0e40f9eed043e67805f9ca7a70f38aa43d98bdd96ea242b0. 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/USFHW0600320.
Don't Call Me Local - Original Mix - Mixed
DJ Hybrid presents Welcome To The Jungle (DJ MIX)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aeb3a1d7d83610fb2bc3f5bfd033c47c27b2648a0c99558e20b02b4682d7ddb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBFG92200214.
Welcome To The Jungle - Gold (The Best Of Jungle Cakes) - DJ Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708367bcabf0b8e14696a9a1bd6d57b625cdda8066a6763ba347f815ae668b58. 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/GBFG92200050.
Welcome To The Jungle - Gold (The Best Of Jungle Cakes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bcc3a7fb25dc49d228be4a2579d6d94d46f7c3d102ea2c62d9e82c36249de4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBFG92100359.
Liondub & Deekline present Welcome To The Jungle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bcc3a7fb25dc49d228be4a2579d6d94d46f7c3d102ea2c62d9e82c36249de4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBFG92100359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93f08abf4ead268e0c2c6d6bb39a2a6f893ec701a55f07f4d3a665cf1cdb58b. 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/GBVVQ1700287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde912e33bf76c8360dd9a105aa2f7a478e5f8e4308fa5b051fcf35f63d4c4da1. 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/FR9W12002451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bcc3a7fb25dc49d228be4a2579d6d94d46f7c3d102ea2c62d9e82c36249de4. 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/GBFG92100359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7e017c20599a01cda6d1b33bcee99d40b20c700a0c89935fbc9d068400629e. 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/QMDA72176153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40866427835b9883f299294cf14ff5051ea76065037c9fbc4bc2c60dc5285e59. 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/FR9W10804445.
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