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 0x44da08810064dd8151fe21b70b60f6fc7f9dd1bbcb06e738f151b6505941df65. 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/dc15d98a-f4e2-4f33-943d-685cc57178dd.json and https://artists.proofprofile.net/proofs/artist/dc15d98a-f4e2-4f33-943d-685cc57178dd.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 0xaceba6a72a0a0118bd6a2ccd12642b441d5a6e4b4a7a0175eef8623a827f768d. 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/PLS282300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343120398c703495e76c05b84827490c3f6d94e9d9d995fe321a3a62d24ac9b9. 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/PLS282300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e08bf4b89382829e73ea26b62437239d410ace755cedd0278631ad17ad45cd7. 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/PLS282300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcbb9147d15522f4d47b7bee5b9c38f55fc91802d336767a73d73499c976552. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLS282300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728fc295220c40ad8b115702586afc59246b6885c4f36081ec79c3c71fc21c5f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLS282300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb197994f693c494f9206a2d26d8a3da5e038e280107df813c9227f99acf7fd4a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLS282300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c963428c8345e264165f7b6f2170da68c4f727fdb315c87efbdb766a9f3d4a. 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/PLS282200094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaceba6a72a0a0118bd6a2ccd12642b441d5a6e4b4a7a0175eef8623a827f768d. 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/PLS282300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343120398c703495e76c05b84827490c3f6d94e9d9d995fe321a3a62d24ac9b9. 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/PLS282300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcbb9147d15522f4d47b7bee5b9c38f55fc91802d336767a73d73499c976552. 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/PLS282300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728fc295220c40ad8b115702586afc59246b6885c4f36081ec79c3c71fc21c5f. 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/PLS282300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb197994f693c494f9206a2d26d8a3da5e038e280107df813c9227f99acf7fd4a. 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/PLS282300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c963428c8345e264165f7b6f2170da68c4f727fdb315c87efbdb766a9f3d4a. 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/PLS282200094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a17bcc14e03a30804cced8cb725becdb248a4c8cd13e9b1f281e748f0dabca. 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/PLS282200144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea74cc34cf84422d233773e97d2e81797717f98d63d5c1a84848e541a4bd7b9. 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/PLS282200149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a17bcc14e03a30804cced8cb725becdb248a4c8cd13e9b1f281e748f0dabca. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/PLS282200144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea74cc34cf84422d233773e97d2e81797717f98d63d5c1a84848e541a4bd7b9. 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/PLS282200149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b92dc97a831c932247feeb1705c6f99946d849b20eaf42e4046ec52f6e1680f. 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/PLB382500267.