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 0x1b085e4e35ec883c90f380bd1e50dbb49e6e1b685417e06075dbb5ee674543db. 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/f45102be-9c04-48bc-b919-c1c972a8b9fd.json and https://artists.proofprofile.net/proofs/artist/f45102be-9c04-48bc-b919-c1c972a8b9fd.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 0x7735302699735ca6fa2fb70c417f0279327a9b3f23fa1b84e9f3e7210158782d. 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/GX3HH2358875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111d9c28faf8785be77c4215f3e4ad29ca763c22c364d2116f5bd798759bd233. 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/NLT2H2300961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7e5bcd744eaa95684b896461f034bf85b406e4a52235edab63715bec8b86f0. 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/NLT2H2400834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde89d753a1b996373f6c575df4ec8363f86bd88baacc78f889c575f360edc995. 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/NLT2H2400657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a322e3da51d680e3a6c6e927142c5444a0224c57dc012456de9413daa1588c3. 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/NL9KQ2390383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc867dfe18eed43d1baf52d09dc0081a9e6604fe445fd33992df49825a00c3a0. 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/NLT2H2400529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d44d9bdcff21babb16dbccd76b0495c139c7d835f85867432837273c7da22f2. 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/NLT2H2400298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347fecf220a97bf5c404fb7a5b21a402091db97d16a5c8f0e2567d52a6eba320. 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/NLT2H2400281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b44d1af59b87cd3757e8e32d2cc6a28a2fee9c580d91802936496a1db37e09a. 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/NLT2H2400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd683778ce1f7365b8b2c7d102ac3d19491ec72ad6bcdade67597ca27b29c9211. 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/NLT2H2300567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae03779616701db835dedafab8cd222ef71e4fe8ceb63a9e7bebe4aa31ca84c. 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/GX38U2358783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e118b47dfa03f3d3f39d38e9d7e4b21d49c20f72de4845762ca8d257bc7fcb. 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/GBSMU0020706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9491aecaa7eed1875f0319f8d040ced72a2b246a7d6dd5d140465777cd2d06e8. 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/NLT2H2401346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6d78f11a2095cc23c716e92a314f581f78cbefc9de9d84657fc9adb5f5982c. 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/NLT2H2500333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca4a046fad3cce9f5683ce822f8a70850bec03160b2f8755e1cbe755d0fc5aa. 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/NLT2H2500168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76133879bf909c546063a6379c4a181d795eb87f1cd56e2bfd5327f21b4af7e. 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/NLT2H2500049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c8a2ee56289d6e504de42f53e48f992d32c4681867f0199b07471c76376e45. 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/NLT2H2401481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee879b4f29588b48a5bd86bf18d7900ac335b1c83eeedaf727418a63b16a53b. 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/NLT2H2401387.