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 0xc079625f12d93080963231a5c688cd45abe3783579ece658bdfcaebd6a707057. 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/6911967d-7803-4627-a5ab-8b69984e6985.json and https://artists.proofprofile.net/proofs/artist/6911967d-7803-4627-a5ab-8b69984e6985.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 0xf9f4b4cb0e59da894ec3548652a1264d8eeff2fbf2c9a4fcd682d73d5f4f0478. 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/QZK6M2114049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ece4f6d91519af4a825abb22bb2dfc19b88db6b3ef6c812355a6b5881f1ba20. 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/QZK6M2114050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b70c4deae500ad186c70283745a364d3245e40e825d2613402827e32c89c660. 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/UKW3Z2301108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0775d31e123dbff433d0c3c4edd12345c8a3572e4fbe937eed5b28db4b84ee9b. 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/QZMEP2275397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52aa378b04f55846ab474158f272df1c9eb5c7ce916464531ccf3a0ad2c16e89. 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/UKW3Z2302395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f5ece6161a5efda92bcabf893dd8a463fae193d473dc0ee03f11477289982d. 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/UKW3Z2400389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c54ee60cc7ee66e39875fb4df5e8cffc98cd72a61c5cd2c18f85ea40de761a. 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/UKW3Z2400390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ece4f6d91519af4a825abb22bb2dfc19b88db6b3ef6c812355a6b5881f1ba20. 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/QZK6M2114050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff502acead5e438c8fe9b17bb0dd3745d0d477d9f5c43ad0767b8a998894c14a. 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/UKW3Z2301500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5504e938c1dd915273e1939095252ced85bf2a9e43a3a3560e15f066129bb4b6. 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/UKW3Z2301501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296e6353aa036e133425ebb404eb29bd770fcb1de93543f22e2d0e0b1f436b1e. 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/UKW3Z2301502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66fe284d655a947e9193f73f4c162e49467b4509331104cf12bf3f345de5b00. 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/UKW3Z2301503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdbee76df4dd00d08b985cb840410df7f7fafe869c17689775e04aa287de297. 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/UKW3Z2301504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa2b8be5ec53bd2389ec7d7d83181cc127b85a983b43dae0c202e8e895f89f5. 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/UKW3Z2301505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5b84854d325b7f52f24d13673396a44eb7e4008f91b6a3079b0b03594fdd29. 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/UKW3Z2301506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296e6353aa036e133425ebb404eb29bd770fcb1de93543f22e2d0e0b1f436b1e. 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/UKW3Z2301502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66fe284d655a947e9193f73f4c162e49467b4509331104cf12bf3f345de5b00. 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/UKW3Z2301503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdbee76df4dd00d08b985cb840410df7f7fafe869c17689775e04aa287de297. 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/UKW3Z2301504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa2b8be5ec53bd2389ec7d7d83181cc127b85a983b43dae0c202e8e895f89f5. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/UKW3Z2301505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5b84854d325b7f52f24d13673396a44eb7e4008f91b6a3079b0b03594fdd29. 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/UKW3Z2301506.