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 0x918ac8995cadda0ea51f6bf6f08317f2aa368e3ff9e343f6dcbbf098e499a239. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99df0614-4340-4eb5-a65e-a512cfb34d30.json and https://artists.proofprofile.net/proofs/artist/99df0614-4340-4eb5-a65e-a512cfb34d30.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 0x8888db7ca73f71f70819c5acdb611e35d1cff21779b76f38fa95ae6fefaa0543. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZNWX2308940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b229eb2a6890cb7e84345391417a2ec35dae13239b1c775488aa741d0505ca3. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZNWX2308946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f9bffdae4b5558c40975c6c448bbf3d5f2b35a1979c015c7e6896c10b2c9d3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNWX2308948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ccd20443e6651e683c1ffd5a1ea5e5d2fe686feb3b35ba8cc56d8c3db15aeb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNWX2308949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d67267cbdaa37870bd8c1493e64c286c47e3c1b963b9a5c00b432e66bc08182. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZNWX2308950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a522189088916d543baabd4336fdfdb52b57475af68babe5d69df6753c238b7. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:00:26Z), 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/QZNWX2308951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87bbd6a62c217e8a894764af71ccc220bc517d789cbc20fdd099578d4039920. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZES52458096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2592548bc68ac88978b6b363f2cee1745452d5512799b526a343ec03c31bef26. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:03:01Z), 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/QZES52458097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ff19ac38759f10cd906c76237a4b8a64dd12d7a6e2fba253fe835366c9e159. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZES52458098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548d919e55f16794c3cdfb1a24f4a15c57b3c14a99d8f296500dc15aa69cb9fa. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:01:53Z), 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/QZES52458099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910f1163bee74110656a946862ed32a366a1e9bfa03ebb237d01017a52c8cee9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZES52458101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07e63de0ceb867e9dce9b5e72e432b44adbb2a41639f3a7fac87793b0b165b7. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZES52458102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1748274c20a9eec366fa70739890627fb02b0c1303abf3e2b632bc5681a069. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZES52458103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abf824c81402b2b7031b8ee46280811b6e93d6863dcb7b33a7cdb1a0faf0d5e. 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/QZES52458104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82624de3f1a77bd6852df11e35c9f850ac0b58b42f2118826e6d6766a6711f45. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZES52458105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986ff17b6637ffc152b6f42be2c18908f1492825e94608db2a2991f50dbb5bac. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZES52458107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a54a6650ac93df19049cb39cab8f38895e18234cfbe5a33b9860a1a7c2a5053. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZES52458108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e19193552960b07903afc7a8d18717f0f45c8367c2b2f6be99eecd08112f63. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZES52458109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f2b834591a84a387b893ae486a99c0d25d93c743a9ee53037fd0e1a1f2a36f. 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/QZES52458110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f22b5c47e800b97ef0d18f8fa44f592b88b8e4fa7de3af4bdb5832eb2ad65e5. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZES52458112.