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 0x7a31b52f3a5f6c008c1f9136f46af064a76bc6764dabea52b25fb16520585d7c. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9bf4c999-b6b1-44eb-82f7-2323cc0d55c1.json and https://artists.proofprofile.net/proofs/artist/9bf4c999-b6b1-44eb-82f7-2323cc0d55c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Daylight [Ren Phillips & YINGYANG (UK) Remix]
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 0x1c2de143f66663822097055aa71c9293bf9e0a4fce79ff7e6145589dded04757. 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/GBKQU2179520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb056ef1ab5e4f6907a29a98f9a546d6357e9ea661d81ca786cde54bfab4ed32a. 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/GBKQU2153779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b171b810c3bf2a2c0606bd5b3b353c54ae5b725b9fd2c2c07b7b32683ccd00. 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/FRX872010085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4656eda2ea38899ead59281d2975c15ced670eeae813dcddad61fc8d1b4c5910. 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/GBKQU2118119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b3a8a8ad63aed42fe97bc35d3ab3a1b7307f0775ba288922a6815f64b9bcbc. 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/FR10S2015781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e33f00e5c9d734c13beb8f134cdb9da3e0b1d0473995380ee455aadba6d2ac2. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FR10S2015779.
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 0x3353718defdb55003cabd59fe20623838ac3cd69356d1653031e054920c73b5c. 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/DEH742010203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc998ffe5b1ee8224c4a2edabf2a7419cef7afb940250b7d385e805f1e7ecc3e0. 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/DEH742010195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6d4c9ebd187c14b0039344d2448ebb8731534bbd15acd127b1c13c07e47685. 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/GBKQU1914183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d60ece486b0747ae84f88e6750da7ae25df01f73a3adc05513ab5d42f58b08. 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/QZ2MA2004408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0f6688f7a38b652931f3c7aaf4bd64b41960a99642cfcf9c0097a957e67102. 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/GBKQU2110221.
Bollyhood - Ren Phillips, YING YANG (UK) Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5156e4327eb8dffc34d5b2b7a616486fbf53fc4b3ddcae61fe094202d6067dbf. 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/GBKQU2110223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40930e68cadc2ca7ecd7b2f50319755ef96d4e3f57056d110fb09c32afcb25a9. 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/GBLV62015383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7523b73dd7e8cd9c1878ae4fae311aefefcf55490aa559086f56877dd8ddf24f. 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/GBSCL1891008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267902d9280e7e7d0c4e540b81da85d4a6410f7d3d0b74ac99e5bb91f2069166. 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/FR96X1944282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b651b05c690a0667bddf1f345914f3128eedfe440fc16ad84ed66e2d7b9829. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU1795481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1571511d2225ac9ea40e9eba3b896bc74377cea614c22e005774e3409c1707e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBKQU1795482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8960c44f378903333fff170acc3ec73d0d0f5aa21740f66b1af7c8d908e70d65. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/GBLV61712188.