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 0x6fd9174a2598071d1463e0b44da8129040f57df1209a19ded78577c046821902. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d48f87ad-9fc5-4974-bb9e-29e867b6dab9.json and https://artists.proofprofile.net/proofs/artist/d48f87ad-9fc5-4974-bb9e-29e867b6dab9.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 0xfc6d8d8e69183fe53c5e0e126c8c08967f892edb5514acb2d5528b608f6cbbb2. 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/NLE712200095.
Cali Girls (Robbie Rivera & Audiolysis Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5670bac7a026faaa34d54241c134c42a2d05b92d69166e6d27d11ad8dc10e36f. 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/NLE712100246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2978fe4d21ff0bff9dfa7d87c2a68136e6274ffd3efcaae7fef724c4698a512. 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/NLE712000436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625ff142719c86aa0e1c29908983df65a83ccd17c261830a7e1043474b1f9744. 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/NLE712100513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dec8fc9acd1844218141cf3acf66a1374f7ef543845cb8177cdb03a33110254. 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/NLE712000981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ded01941c857389ea719bc199994f63a6d8a59b8ec6b6c1dc855b6fcd77ad5. 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/NLE712100229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04753f637c20d1857d0961f29a6106c246ad89ca0ca1cc5f53ea2947d66fe9c0. 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/NLE712000441.
Walk into the Water - Craig Connelly Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42dd6c94aef2760a36034e75751f267d44d65b0e2af1289df0995e3ad94fd933. 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/NLE712001066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb859f2e49532d9fb77c7667bbf0940b8d11e74c75cb92d5d8a728d43d7681325. 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/NLE712000443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd33d80ff23cdeb8caa877700171736fb0cf5eb746342408eeefb0cdd9488fc. 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/NLE712100230.
The Light Is Always On - Aneesh Gera Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e4a094baba49fb8f4d235edbb1fe1b54b8e662289ed76c66ae1ea74f9f34de. 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/NLE712100273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3e4b64d8db90adf0a608e8ce1d8159c68c44e9258f5dd0068e8971d2586561. 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/NLE712100311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5a8e660c9ce967188683fae6760c591439807c4db2c7d9b99a1a114a814c80. 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/NLE712100118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e1994bfaff279ca126f22a6ffccbe5d2c58e595660abb4285ee88bf5bc5f3c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NLE712000566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0371333583b0f903e7c009723db8bfc385315793994237080c0df8fc84b775a. 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/NLE712100732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0fd4993c81f3448a680c0dd2b1939d21fc63b926ef59205a3254bc4404c4a9. 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/NLD682402870.