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 0x1b137cb6eaeb9c8a943b32dfe3bcc0c7c30ff3149b72a012619ad5a81fc30157. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0563a43c-ab84-4bd7-8a4d-985c6a58f44e.json and https://artists.proofprofile.net/proofs/artist/0563a43c-ab84-4bd7-8a4d-985c6a58f44e.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 0xe4ec08a1717d1b37937142fb1588ea6dc191181ef62783dfb06bfcd761d3c7d1. 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/BRGOA2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713c057892819a28f8183cb6126d1e2c788f982b0ee886f9489afcda9fa6ade9. 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/BRGOA2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10455cf5f656d8e0f806a7c69b932e466328242f3fbbb5f9864128f090e58a79. 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/BRGOA2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe862198333b0d7fbf10b1f249417e74da02abef364babd93d1cd818d5de5294a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BRGOA2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece3ac7b6d716337cd9cb7676929d820b8a46435a6fea1275619e42781b0c544. 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/BRGOA2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60a2e43dcbdc620aeb77012a49bd742d4bd76efa3b66cd7003ed5dcd4d401f9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRGOA2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42095c3eb6d9fd8902b828101f76d67728831f3bb2a3b1a3356290480269e1d1. 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/BRGOA2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ca3080b227fd8db75127b5195235c25545c3dc88ff927207cf35ae8e0b3f5c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRGOA2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b7d9b8d6bbbb3b7841435a8cb83915dce325e22c8e9a05071f3e615259578b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRTRB2306140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa967342baba9ec78c1225ef03ca144eb582695353eaa5460e13417b3efcd9e24. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRTRB2306141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9506d4a9434c28012b43ed11fbbf4b3b4aa6cde2a0e37a56465f719f55e7b58. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRGOA2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc49216adf3eb8b2fe26412c60c375b1dbd9f50e4973d72759f22703921e9398. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRGOA2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06df01f3723bc4458a9a8f89c5ebca6e2841fc37e067c17bd8c253fd824337e8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRGOA2000004.
Two Strangers Trying Not to Kill Each Other (Original Motion Picture Soundtrack)