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 0xfd5ba6942346a1b2e276f7c8ec0421eb5ff349fd69dc3a167c1ce24b4ceb0cbc. 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/bdbc6ba4-3aa8-4447-a046-f060fdc2e264.json and https://artists.proofprofile.net/proofs/artist/bdbc6ba4-3aa8-4447-a046-f060fdc2e264.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 0x042f6bb1db17a7f7738bbd2d389c78cf0b0bd21435d287933bf5faeb2403659a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GX3Q92327367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfedaf79357e8002da887aa1c2021705590753cd1957c2b899db0369d77add2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX3Q92372148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bade615c9bfa7884adbdd10ac59852fd2de94886706a13c933e4d6938fedee1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBMA22325197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233424ebbb3d56557cd18809fe5183cd30346ac1491fbeb74297374338a928cc. 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/GBMA22325198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea5fb84b193f87322fd156a475dc1c78b0c3fd707b6d2e0fa43ee95e6036cf4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBMA22325199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1909dcb9577d7a515e862c5a365b87b029254d99344efc86d8ee2b1af34b8c26. 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/GX3Q92346463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2db8fa093233fe4af38ebdf3397bf1175a2a0ce57e594d3d81ff88c953391b. 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/UKXN22344874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35474ab793ecf8646dc1d541588277eb4cdfabbbb55adeb4169a82ced64bc021. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBMA22325200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79ad5f012cf7e156419430c1873df804f09eb8215649f86717811b5d2e3adab. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBMA22325201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92a1a52281c21b5e7485af863d98a79737fd5ef0b0055e5ef8b20745bcbb3a9. 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/GBMA22325203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2565ffda17e2e50b8078a6f8099eb80a85f04985c0587a361be891cfc167dd. 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/GBLFP2387998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6a2f5c93f884cb57ab18d7d86819df0d4d107e56c64a69440f0f889e9a1bbd. 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/GBMA22325204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8811b8161fd96120f46796c3d88ea124b0d4ebaaaa381b854ef30e8379a7f7d2. 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/GBMA22325202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c46a878d387e9ce32faf88c9b991ce79a19514dd7e76517daf4a06f3ee816f. 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/GBMA22325205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f8d7b1993241421d67babd60bb7c1725754c126e2e03a940cad4fa7969cf02. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBMA22325206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4668217702674bfe33b29a6bab49af5a357759fa586136b115eec7ffa6394900. 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/GBMA22394605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42911b538a341b33745d1f7442938d34debbf8d32dd0a065db34755bb7687f2. 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/GBTMZ2201126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d8d24bfd1b8cb23ea408ae280dd636dfcc75d5f301872a5a0706b4e8603c9c. 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/UKXN22432265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f53fa1a1c1bd259785b58f203ad7b7f6bbb305afff0b4b8651cb10f290f5ac. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWFV2406412.