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 0xc18cae50215a0f2390f04dc47b51baae0b0fea6ee9aa35a5f25747e4944e9228. 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/b63a51e0-8e54-457d-82e9-bab1acd9203c.json and https://artists.proofprofile.net/proofs/artist/b63a51e0-8e54-457d-82e9-bab1acd9203c.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 0xae69106db5296d0a051bc3fc3c502663816f5df7c6366dfa6db0f672b2cef9cf. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:23:43Z), 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/AUDJ01501344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e613876907f97919352adbc1999696936aa920dfcc8daff41c36033d8f7bc4f. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/AUVWE1700285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c5d9fa08592481fd3f839f0187bbc9e527afe8ee4d8e33c324cef05778cad5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AUVWE1700289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029baae3e84f9139e77eb7b6ea0782cea176c6dcc7c240707cc382fe86e3f1fa. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/AUVWE1700291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263b9b4cf351b09218acc68f431c8244120482d68e41695a68955ef46325270b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AUVWE1700292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a74fed2a5937364af0c158c061b65df5ae186f2ccaea1857dc640c1191dc67a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AUTZK1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9346a9b1fc335ae7c9e6c4944b7f78abaa8d9a273193c5f44c8ecbb4e28567ce. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AUTZK1900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e61bcf2e97bd1aec3902f45f09056fcc9df704ed70744e49f99fb15d526a19. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/AUTZK1900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7a6d03b5cd8850128def8b71cc887a980fe7ac23933a1cd70412b0723a3681. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/AUTZK1900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c475cbe58d19412492f622c483b5dc5060773afcdeb76ca86c07dabacfe30b4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/AUTZK2100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7118c65fb41b84dbfc50a0d56cd0b0a2f8b1c4dbe4e69398cbe78078820a838e. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/AUTZK2100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe404faf7dd5446cca9ecefb3a41a7ed2525b1c7f47884dc3b632d4f662e23ea1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AUTZK2100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7de96c613cea5b9b9b86202ba00a22f7a9f600990bd5c2b1ea7342a80fc247c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AUTZK2100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a465fead3a968f235e9f1e68f538a75a9eea438d8ee58be66a490d95f7fe8a4. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:31:36Z), 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/AU2ZC2400301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1e0077f9898aafe2d619931d69b633a692e4b38b3abd6e00c73bb7aed8c74b. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/AU2ZC2400302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653648be27c31dfbc3860afd025d59873923db5eaff84ac88998d9fb0fb44b42. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/AU2ZC2400303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0ff190ec245437324e6033388279489edb96e372845b7a116c8284ef217379. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/AU2ZC2400304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49cb0aaf0e683a79614f847d8771c47584874b90cd7d820bb884b0b8280f7e1. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/AU2ZC2400305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232bb02ff5ddeafc48ab98acc25f91c99c9614dc9f3823bf3179d826e0fce8a3. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:10:43Z), 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/AU2ZC2400306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe85c9fe96ab232779524d977d499df9b7e0f464f6536fe57b8cbb2f17d8cfb. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/AU2ZC2400307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031a62ebda89b11c7570ea02a7f684fc1a780c7081eadc733d40e0fbdf839495. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:46:24Z), 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/AU2ZC2400308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab80403e6ef450453bd8412fa027a961814b2677189e7739539c6985bba471da. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/AU2ZC2400309.