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 0x68a6e0244c26ff799beda91799407746739c5308551ae98f4b6254d8eac591e6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8fbad104-d749-4ad2-88bc-630f01182429.json and https://artists.proofprofile.net/proofs/artist/8fbad104-d749-4ad2-88bc-630f01182429.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 0x86f44f6a9b4182163fc93b201be46de6ffd2cff2a5c2a9185fe318336b790368. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USTCZ0934268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecf092124027e5b81163712c4adf42e0cd77321ee03d00118306c811bef8b61. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USTCC0917257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17ba943149fee4e4be060bd590fe6d57915cd5228a92721684371a258cb9642. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:04:18Z), 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/USTCC0917258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56af6dceb01bad289b5dc321bc0ae62955ad486646ddf2e2670a0f1d754ea37f. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USTCC0917260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ce3a7045fdc90106d7493691434b28200b595054aa858353ce2de0658e5dd8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USTCE1032141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7de7ddf02604cd5aa7c9f6797298363d16f41f4b8d5ca90a06b0e8b43a1aa5. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USTCE1032143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c43805cbe9308b566aec5262aaba4365da393d6fd65d2d1d4f02cf429c3340f. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAAS1076624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd993fc6335b9a96c433a557c3052c4294b2da37ca426ef2c6762eefb6b2104f0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAAS1076651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a8b84302c85f3fca27865107d5600de2c979dafebf035cb03653e7de8d0916. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCAAS1076652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29f67a8b28edb463dd5d7ef162dac14d6cf4e5884c3b1dac18c0d58629597c1. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCAAS1076657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332f3dc2bc5dbcf8f7fb6b12289282a9e420b5b1bddcd5c83df005a573699bf6. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAAS1076661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718818cec3e8be1003afd48798648640447118da38a406450d4d7b8d2acb643b. 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/TCAAS1076665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39199edbff4b13030fe9fabe5280f80c6b1684012c410005ef8ee4db848ce0e9. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCAAS1076666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdda8b6978a810e7c03f1002a01dfdcdbce87b4ca97e24f62d14cc2e8b553bc. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:32:22Z), 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/TCAAS1076667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9621c3cb4e51edca0282c6a7b403e16e2298143c54773e6889625a87fa1c94c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/XT3111111160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f1bc463738902e5ab980b3375fa338442d9f029ae82aec661b453a0ff2e8ab. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:05:47Z), 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/XT3111111159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f50d865f9302f0f0212db1c4599c61bdd7e77e8dfabc487f73c46bef58377e2. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:44:25Z), 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/XT3111111286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2175d77becc2c164cb45254ec42d53db19af7289d378ab0d1e730449435ce80d. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:48:13Z), 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/XT3111111290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa036154334e5f5218c957258911c082ee132b9988d94cb7f133c8e4b34c9f8f. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/XT3111111287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b729148e6faff6a24f1ca1c82f6de10ab81b5f3cb9bd5f505c05c41d520f61. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/XT3111111320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7aa7ecd6ce529c5563e3170d2e9df96beb1c1fa5154ac0c53d8fbd72f5a3bd3. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/XT3111111322.