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 0xb5d951b90e83303f80422ee8795c5d5e36e375c0f605d248b389bebc69944b25. 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/fa8b5efe-b020-431f-9ec4-5387967bd3b8.json and https://artists.proofprofile.net/proofs/artist/fa8b5efe-b020-431f-9ec4-5387967bd3b8.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 0x1f9d23b96b3ea3aed3790d539ffc9d03008795ebd470328278032ee7deb03de9. 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/TCAJB2449667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd09817585ac71b702ef5fbd4ae1c5ea281e0b26eb883c382b31523f3e9fb532. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAJB2449675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c73f9d266161c6bc20d6cd42200457262ae402f09a98c4818cb585774ef431c. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAJB2449676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b3f0353b452cfa03dac58342197f5892acae6f238550c835c3933c75619340. 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/TCAJA2449687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a2dc0d46c917a2fd7c5a45bcfce55f1a452a71759cdd67c53d4da538e4682a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAJA2449692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f49611c51d75a95176971cb43c6e4de2f9a10cd55e8f410e8a56cac55bdc7b. 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/TCAJB2449698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948173fdbcc1a39aed1a1931d1b725af1a526cab24d7cceb98ac547e8c4211b2. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCAJB2449710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f7036fabe8c6fed72c0a3498ba4ee84875a1270d0c3158523a67b95106580c. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCAJA2449712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83085301c71e7548cf807f1351de599b57ff53962c10f864a8838cb8c067d028. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAJA2449715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1274a1ece0ff1b6d6ffcef3feb4c3b0682c84d2443cf36612d2ff35a4159bab9. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAJC2461389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a69aba53f6d6adae81a79a3c70604ce878f1d49288e8428229bdc009c447bd. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/TCAJB2461396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be1be75c837b96c015024929955ea2fd64d412b5707184e3bac9b2172b3d115. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:28:12Z), 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/TCAJB2461401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258601450835da1009574f1e1c457d8ab38694b315ab7cf3f5e0ff00bb0d7226. 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/TCAJB2461406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432a9e2904e1dfdf082b3a8b83b5f59190a479dee104f4aa5516e5e2951dcc43. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAJB2461411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a06bf400424ba7a619f86af0490702360650f00ce796191bd8af4ea6dd9f57e. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/TCAJB2461423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bf442344e0c72128d7a5b81e0f3033a6be56deeb8616d711ae6014c3fade5b. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAJC2461459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799c00014798693ef3e04e6845d9d85911e5acd007e0658aaedf5fdd31e81a5b. 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/TCAJD2442458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c07ea49f689ccefc438ff8248369bf9e004a5491a6a575b5daaef15ef8c2279. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAJE2442474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274c899dae3dda763f47e7b9c1d513d13a23032c035069d814aca240bcce03c3. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAJD2442492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545e91a69d88273234d20399ea71e480bb3cbd2928c82b15f55af72ff18bf9e5. 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/TCAJD2442515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16adf5e37b0b4ab012f0b787cb78897e5bd25e1bc7de159508d0fe8cf392119f. 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/TCAJD2442526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5742a557b8a879d4fe36ff991dd2006b8ba7480dd5d9d911f455ca648d1ec0ab. 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/TCAJD2442531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe248cafea27bc4e48708a19f561f4d4345abefc39347f2571cb8cc3c95edc386. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAJD2442539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed02ee2810ddfcf8a208912ee5f38521a1fa0fd7d7847075d920bb0411ce8ae2. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAJD2442550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457d150622470b83db76a17704aa15faad85b866fbb55fb04529eb672165fb91. 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/TCAJD2442564.