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 0xf59321fcf18e16cb7369f28b1adfb23ba77d0881471ab8044512dbb3540389ff. 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/8b13cc67-23fd-4949-bfa9-68c10ef5c1d4.json and https://artists.proofprofile.net/proofs/artist/8b13cc67-23fd-4949-bfa9-68c10ef5c1d4.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 0x1b1d094b6e214df61792ab25a4d2d5517473c1c647f50a08d960e43704677450. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:11:10Z), 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/GBSMU3494588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a39217df6fea776289292191d2aae356d5dff5b5fc00d6d231e643faf3b0077. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/GBSMU3494683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc9ebd21e4211bcc52abeca9c807a2b44ce1a733567a7323afd169b757f1d7a. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:55:31Z), 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/GBSMU3494784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8b4a8e42ceb66ba374b8ea35288507f86aa3bec709f6504f86a53219a4b518. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ES71G1737178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb5f73bcc5a04240da3f7f1500dce9e9ac2ff625145d91d8ef55c4223f87563. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:22:30Z), 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/ES71G1737181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db156973e47a6cc1d0a7b3c3a59d4bcb34b241c835bdd6c30b5f4f2aa8c33f6. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ES71G1737182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f141cc495908dc7fc23efa801d3f8cd6648e9b064fc0c02974bb2e3cae4ea2. 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/ES52G1800645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa153821d1835b0ad9e5da336a474a57a06ff7c93030cdc14bf2a6603a72e48. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES52G1800564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1768ebc0b2dc5fe5e2ca90bda6727016586e98760245265ef35a608dc73b8a2f. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:37:38Z), 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/ES52G1800563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5f500ea858a74825988e1527c1b07a3315018f6e45eb2e4686c21bf9bdd0af. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/ES16E1900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61c9ee57d4bac47535dfe22228b55808f44ba1b1ff9766896e111e821771168. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/ES16E1900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750fcac0dd77ab5f91b162a1de5c70b622717bb3be91cc39e1f7c643d78824a8. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:24:49Z), 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/ES16E1900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05027c7d78d1a2cf6f5cc091482ca0a5d97673bb641d699a1a5030a4996e2b6b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ES16E1900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc35fa16e25de5afcd8ccf18bed98c0b188bf4e8358c803dd28c310c58b3d57c. 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/ES16E1900114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eec17a1cfd52ac9fab0fca9cdb0c06a589878f394c9bdb81d6ed169271c209e. 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/ES16E2000126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecb880adb0a60d6f96f295927683beb4c79e52a4dd0d783ad0f6343c57b3ea4. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:19:21Z), 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/ES16E2000195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93781faa080a4d113bb580b74dcb273ff33030c373463812b6880af310a0176a. 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/ES16E2200394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bca71cb6c22da30220a1db44b2721021f27ad1545729d4862cbbcd29e55aa0d. 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/ES16E2200389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be8b3cf88e486d0fb0caa31f168e030b75708c3b54e68653a694be17af4bc36. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ES16E2200388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72de5da59123efc55fd71c13b4c7204698570aab6105bc3e111bbc830ab9a2ec. 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/ES16E2200390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2c6fdde7c692052c1b2d6123abd71b8859bb2bde8d913597af76d9520e380d. 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/ES16E2300552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe500da5f0ff74cf5d996be96165efb7e27efc2b436a81c82f20ac9e6eab445b6. 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/ES16E2300646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ec07dd6a289db47b42b93e53696307e196f34fe5363272f485a70becbfe0fa. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GX53U2385168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a1eae4224bfdddafb2c2f80630d304b64c52fae60b28e0d62caceee8feff2c. 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/ES17E2402002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9e3f2b40f89a43e8b308c61f0fd6a8c3aa79a8f790bab9b3a25b7bdd99f680. 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/ES17E2401994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ec07dd6a289db47b42b93e53696307e196f34fe5363272f485a70becbfe0fa. 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/GX53U2385168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca713b963bbbf87c792987319fef0e4c57824454f74263cfad0ee2aaf49d779. 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/ES17E2401996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e1466712967b97ef8bbb38df7612e976a7d4a4eafb2573c3d3bbd108496ee7. 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/ES17E2401997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66213f3e807e79bc34317da7aaad3840823bf72675ad8b399f2002d600814f8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GXE2S2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e23b1339277e18cff9c6e8ef214908d7a3da77264592cdcd292ad7f3ce50c78. 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/ES17E2401998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413e054f1ccb2863bbaf0280c25eea602fb30b8355231909725c4ac3588fde93. 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/ES17E2401995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecb80864193ecf51c6105ac0d33327fd6689798903224bbe29e167a56c62049. 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/ES17E2401999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e1074120b0ef2e56348f9b89f152c2e4956f57e8f504c585dff5948a56abf0. 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/ES17E2402001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcba07dd3648809e6d3659cf6662bff79834c7bbf4c603e2feafdfa35b8f90e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES17E2402000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2c6fdde7c692052c1b2d6123abd71b8859bb2bde8d913597af76d9520e380d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES16E2300552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecb80864193ecf51c6105ac0d33327fd6689798903224bbe29e167a56c62049. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ES17E2401999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5342ee4e0683ea8c884b0a3e777c0ce63905b647766c4e1fa239988c5b2e0a14. 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/QMFME2238946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc172b6561f639b46ab09fc98ad4e4da65b6247c665dcb89536946c109246f5. 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/ES16E2000124.