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 0x4de8beaf19e0db89e55dbe5d4f3cce92f4aac6632e9adf119366599f446db139. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/42272e6e-3925-4959-9a73-ef1b3fb694a4.json and https://artists.proofprofile.net/proofs/artist/42272e6e-3925-4959-9a73-ef1b3fb694a4.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 0x394f05c3679f26eac427ceb07567884c9226b74faa5c8de262989db91d8755fc. 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/SEYOK2419259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48c141c44113fd3adf3dbd8ecc0d8129704f87bacbcd8912c4fd28d848d2c22. 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/SEYOK2419260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b28990517cfa460491f4b018074c79b737b162579e9e3c46695b922db2f3fb9. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEYOK2419268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6c21a69a4906bb73e10c755441762cd39f10024dc24c3a7bd2456023668ef2. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/SEYOK2421454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6681d599d968c7eb0917a6fe88cd21f30175f6a59279b3eba443a9a32601190. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SEYOK2421455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b521e90f0c3b725d38cc9dcf4fdca15bb528023f6b244b17680736af11c0b9f. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/SEYOK2421456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec6b6b9bdad66709177ae0f37ef3992db57f7e2f8f6e327c10f8000759536ab. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:03:42Z), 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/SEYOK2421457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23adfe4b4149cb83c2fd4fc6f8760825415ea6d2da3fe4fcc013ce3d8c9263a7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SEYOK2421458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05c289ba0a50c3ed3a2b6db8e4ae2a36912d77ca37c4cff108bef5a0b9142ab. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SEYOK2421459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee39c7359311a1a86eb0f7731c2f96e85d640bd102d852a0aa86acb8a42751e3. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/SEYOK2421460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5669f081cb8f508c5b545297be990ed73080dad8119de544a845ed6064ba9d1c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SEYOK2421461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191b247df533fa6a02cb36682e27ab2b2d4852d41c640b55b6e91c34adae7829. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SEYOK2421462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f570b14efedbef5287125091c20b2cf8ca4cbc7ed767a8e3ebad7fa573b6c06. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:56:34Z), 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/SEYOK2421444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90050ba671ac671185f2a4c684993959d0a8497d81de5cc5b9f745562394d3ff. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:57:50Z), 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/SEYOK2421445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f4c6e2d86631836f4f50ef3affb13949e9ff56e109767427b7a68f90976a66. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:33:44Z), 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/SEYOK2421446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ae161818ab5be014e7a5b24080e5279a4faee36ffd6aef6594f94b8f9566b2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SEYOK2421447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358990ac0fdd7463a5a463c71c334bca4fc86c43b4ffa4db7c2869fbaa7453a0. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/SEYOK2421448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8dd9658fcb1facd41fd3babcc4c167b9f80e13bc5a54d5f3ad8d16826449bf. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/SEYOK2421449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4a23dae6a1631bd4c93c8449d8d626a2a40a6960ba1e45dae2172be9c1df05. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:10:02Z), 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/SEYOK2421452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a6fb49a3656649d3a83f38fbc3708bfea2750a4827c6fefec06e4c9b4fc35e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SEYOK2421453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa7cce5164fc447edbb89797d5ae7c5e6e4230c79162f88bb5e26c0abaf8788. 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/SEYOK2421467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6263cfb519a662476498ec4960225e89e4b5c13287509f78d114d7fc594c3a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SEYOK2421469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb653d19d6fcedfb1ebcfeb02e77a133b2cfd9d79167a397be3cbfbb2cfdf1f. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:31:36Z), 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/SEYOK2421470.