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 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 0x8426f9b0938aa5ac887fcee708055fe6ae33bb22eb034e999d33f6ee14a4d439. 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/bc7513fd-563c-4764-aeae-b334b6ef07dc.json and https://artists.proofprofile.net/proofs/artist/bc7513fd-563c-4764-aeae-b334b6ef07dc.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 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 0xa559c253d154ea18a8d124ad6a0f7a1c6edaa2fd3c5b15adecc8c2bd98ec35ee. 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/ES16G2010015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a3ff2576bbc69691bbceb5a76dc97975c74607c7f1e7ec53e97a0e62d6e90a. 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/ES16G2010047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb23ca2e02147beda7fdc64569789d0c12e4f9302d5c72c9aba6373f0c978ff. 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/ES16G2010016.
Brand New Day - Luis Erre Dubstrumental Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe2e65bf3f384d46ac791fa732e134f19d45dad534905e8e9b481628b206bc6. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/ES16G2010032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9e69388783745f4f3d6b0b9a55466e4636ab2d54ebba5804c52136dee49b2f. 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/ES16G2010017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1174e93f96e70c2a1e09be3a370fc9a3ea23435df9baa196eace5eeace7ffdc5. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ES16G2010018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e82eba3a74a9e9929df74d2c8df4efb974b8cf3b506ae5f3bdd0d2c71cb2dc. 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/ES16G2010034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3247a5efcb5c2617a4cd0a471a6d45da4805efdf5185edc41cad872904be9a8c. 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/ES16G2010035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f0254752d36633e0a0bfac05a2815a92b3df4926a0101b54cdcd1892de68e0. 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/ES16G2010038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfacb6e209e64de52519ebf98b83ed7b051a14ae6a873b7474ba67d6375d5724. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ES16G2010040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8065ec70ccb2e90373b43cfe862dc01cecb1fce36e2471cc27066917ae7004. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/ES16G2010043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0badfd7e462d003f974e80c5c798444a2da30a8e54e74056410b702b80cd1e5. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/ES16G2010028.
Invader Non-Stop Part 2 - Continuous Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c5a593dcc704ce0186d6417d800979f70e6a484361cc9fe9c6b1ba3fd7c39a. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBKQU2077790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e635e27044f9dad12ce555f05d7637512ce3bbe1867b576527f00579136e9b8. 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/GBKQU2202945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724d58690572b37f045c432c45f4d67535153aef892afd5005f3721d7ad9c029. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/GBKQU2202954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8de4dc57dd4f677d3ec1a2241bfdd774fabdc28f48e8ae198a0589be78bb51. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBKQU2202949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f0254752d36633e0a0bfac05a2815a92b3df4926a0101b54cdcd1892de68e0. 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/ES16G2010038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a92ebcf4b60b987cd55bf29751a0d1fd382351128ae4b2ebf12d8ffff72c833. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBKQU2202950.