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 0xc9989966586eb4bafb45b4926a18fe7554c3ce6be68bc55e2462f5e56227922d. 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/f5e148a1-41b1-4971-bb5e-b859f939a240.json and https://artists.proofprofile.net/proofs/artist/f5e148a1-41b1-4971-bb5e-b859f939a240.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 0xa540d2c66ca39e0803d836f238d860469cc804077e725e1a81741e767893c5b2. 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/TCAFL2196490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83582f6ed7bdedb11bf5ce7246ab73448edf601feec4fda2e174bd19114081ac. 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/TCAFK2102191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdb9d47c8228fe419fc2d5db1a46e3c13d2b5a12727fbf93bdab599b03d2fa9. 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/TCAFL2196502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d6acb6a2068c2b50387dc8b4824cc28ff16b2de36c4e6a6ea4b7ec51b7ed4f. 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/TCAFL2196504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5259d46dc80b7eee9887c96220f57575f21f9ef1b6aa1d0f15aa33666189037a. 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/TCAFL2196505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81e67d362bd74472b8644e0125306d27e3bcbcc5cd9134a1693441a06c96f00. 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/TCAFL2196506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fd178d8fee323fc5fdaa681921bcd407d690b57a1baf8ffb27ddb26b8716a8. 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/TCAFD2088731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91ede48d748f47296b8437f328bd8067574387311a4691fd56f8497e49edd90. 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/TCAEZ2039933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a260dfb7f41459cb78056a42a2c6e74374990677cfa29286235db186ef84aa. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/TCAFL2196512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09faee5e896fa1f9444708e7f83e55d13c2a9ac7c9a46ba3ee540f49b7366a71. 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/TCAFL2196515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874111d1b2eaa5e36473a42f853c617f4c0e07b42a08036d74d1ea1c904ca6ff. 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/QZHN32049488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1789e0e4b03a5c5cd7bedb77e8610ea5afe595536352fa93f65b9408c436aa5. 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/TCAEH1964669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e20cf62d38bc55afa41b5491bf8d2b576f41c564171a604d2d0ea9be406e37. 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/TCAEH1964671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5354493d44deaccfe68d9ba28edf630b31830818515d630dcb85d11571c85304. 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/TCAEH1964673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfef3cf594be473acd51b0d306949d8ec03fa3bba7bb26650c874c3ce9c3395. 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/TCAEH1964675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc883a45e051eb728b4ef02ba9dfaf0a067311a61344d727dc5cac8a47e0bcc47. 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/TCAEH1964677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75da67cb58b916eaf27b196b84f1b72f5d3e2549eebd6d0e2df5f6febe4162c1. 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/TCAEH1964678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6603f5542c2a2c09164b1b21be7d5fdf46d0b278b1a8194d5f6f3b4dfa550f7b. 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/TCAEH1964680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38f31dbcf2682ec5f30201ca593368211450c3ec5717bfb5471a564c072a9bf. 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/TCAEH1964681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3dfbeb87b4ad39f9649d9ee2ecec934e80c0d7ec1babde312c98fe1b3b4aa9. 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/TCAEH1964682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f4658b0d3126fb36ee4bd36a076d7a536101e4a9a65522b10467e4bb79337f. 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/TCAEH1964683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83582f6ed7bdedb11bf5ce7246ab73448edf601feec4fda2e174bd19114081ac. 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/TCAFK2102191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fd178d8fee323fc5fdaa681921bcd407d690b57a1baf8ffb27ddb26b8716a8. 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/TCAFD2088731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91ede48d748f47296b8437f328bd8067574387311a4691fd56f8497e49edd90. 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/TCAEZ2039933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ebce975ea696e1af63fd27ad801c7f391b187c8432862601cf6969165444f6. 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/QZES91957811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999a3ce461bc73254eb52a8b1c02bee70c4670de6a678b5d519b154300045880. 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/TCAED1924702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ef107f06706b14eb9fe1a1de79fb3ad4f24cb9c8e36837881c8fe139520a28. 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/TCAED1924705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3c9f8d74232b037e87d13aafb41f1b76793e702580cbfb05ffb3b624ec9395. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:44:00Z), 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/TCAED1924706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a7541a51dc9370bca1ca0a4362730d10d0c8d8d4069be82785b86af20df8de. 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/TCAED1924719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2259fc59a98f4314fc262fdcb79e597f6a0781f934fe055c6e16fc1d4e0b4f4b. 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/TCAED1924722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6adafdc238ee03b8c1475b0bdb4da1f2105780846a5bfde05f6ce35a947cd4. 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/TCAED1924737.