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 0x997203c81e5123167bda7f72c881ee3cb7cdc3721ec81a30c19bad10892ba3b6. 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/0341e01f-c613-450e-a1d4-304ad6cb1232.json and https://artists.proofprofile.net/proofs/artist/0341e01f-c613-450e-a1d4-304ad6cb1232.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 0xa18bbd628c7e5d3b44516019140d63d51953bd9507e52187fdcf5295c28abb14. 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/GBKQU2312424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86edfe2790d6ca03918b8fa6d88b4f9c5f849ebc68914c4eb7095ece32d09b50. 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/GBKQU2312427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e2869f20f0a712203fda7a88011eaf26ea9464e78853b1113223d9db707d45. 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/GBKQU2312429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae864a3e04a1e3c64f08878d3bde10e57e78ee5cb590634a0ae219f5a2aaa44. 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/GBKQU2312430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea13fde6a6b88655ba62a8c8c5a065f534752daea109d04205960153204a7c6a. 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/GBKQU2312431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a53324258858974be923d2dd3562b1d7405858211634d08c60dc1be3103b31. 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/GBKQU2312432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f219b6a728f444992b36d18a433225b5cb5cb30c41b2e57c9ef8c52d328f70. 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/GBKQU2312433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc6b3767e338ea3c37d5011b9b65ba6e45506a629fedc065369f0df2e804771. 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/GBKQU2312435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41dfcaffc0722ef2860515ea908f831ccc2566480af82169e4a719dda985ef3c. 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/GBKQU2312438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c918e8262026f4f4b5b87bb8c93903c2ac2fbc679b33913609c0a4b978ad688. 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/GBKQU2312441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18dbe996905d67d88698b71fb1f9d48571a525811e0fbb843edf797d4b843dd. 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/DEY472473485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84879919b15f6e63d2300d1cd3b7d92bc512d9dd5fad2e68160e41f6155dfa2c. 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/DEY472473486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bca641b590d5b6c154db2702f13e25fda7b55be04ed12e0662b10219e71b111. 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/UKXN22322274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a0e66b5fc56093b829a4e7f5cd300aeb3f9a1a25786f45321913fa09235a21. 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/UKXN22318826.
Alone in a Strange Place - Addictive Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec21915aac4e28d739bb660b1e026929f949ab986f25c903df3ea085b545e0b6. 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/UKXN22318827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a8257394836fb118456f9df8e1d3155d2ed2345222134e82a1ca5f80341b8d. 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/GBKQU2374952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0002d0ef0e193dfeafc1577d7c216f2bdc74c4c0f9884e5aab94f236920b9ad0. 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/GBKQU2250655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5500482c517b34a08a6499856c8e43e7d8db13520bfa109151a933ec99e07c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBKQU2250657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf013dbbb446f848737efb2d65d0218071cdd665c8a39753c896e291cef6579f. 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/GBKQU2250659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd349fa969f1152cdb52cb5abf3d52760a5f824582ccafe069b59a93a4d0094. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:19:37Z), 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/CA5KR0025591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec59c4acdf2adb354024f7d9e592f62c909ac1a66b54651f3f417cae5d1142ba. 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/GBKQU2123359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c2d4add6cb8709ef1bdaad1d294c5775dee8a0646f3823dfc7ca62b0890fc3. 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/GBKQU2123360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f3ff97861673af8e02440e40e0fbb8dda9497148d8143c3ddf4c4fda045c8a. 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/GBKQU2123361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d267995527f6943ee8acb9415196c593dfc99f696052dbe1cdd0c6dc12d3eb0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBKQU2123363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7fd357da2de2c5b5552df99e7cf4f298a2c89bc1b322b4d6807a483d6b75d2. 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/GBLV62037958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7f997fbc16fd5ef67ac1d53aea9f290dfb7854ca9460e22be492c4706f7ac6. 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/GBLV62037960.