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 0xe081ae63fa1185db4abb16bfa18a7840e17b0876dcb7cf05d3e8f3fcaf49ef9a. Chain 2 (Bitcoin): anchored in block 953670 (2026-06-14T18:07:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/59422235-d58c-4e0c-b17c-87d7afbf0aea.json and https://artists.proofprofile.net/proofs/artist/59422235-d58c-4e0c-b17c-87d7afbf0aea.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 0x57cedb041d24068198a306d347f97aad972c32cd5e19bab3bea3e088254d0a80. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:46:35Z), 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/IEWNY2444229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd149fd034b8b2feef472245d75cd961f3f76b47bf719085e580b09f2f49cb9c8. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:39:53Z), 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/CAHQJ2525409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0697b065808d2b9563e8e3c81ac520c3f0646de0f8a80e410788f24dca2e614. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:52:13Z), 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/CAHQJ2567260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffd8112b4ae43357b4846126edd2270332ea8c30ff90acbb9ae40d0fdb5f74b. 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/CACWV2507639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2636d3af760c4f85970f46682fc662c3be158039810e4cf88e10dad29f986a37. 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/CACWV2525836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988d7356cbdef92fa6b85c1cf0067997f16671b72728066b8944a35c95432bc3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:44:46Z), 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/CACWV2508444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a29e6a4272d2a66ce766095aeb398de764e0fe66945ef9ff550f8bcc4b8f1c. 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/CACWV2566479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb0be7869f23c56dbf7e458e0f242a71da3d377c306bb348de48584b7d3601f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CACWV2547297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9279db4b89a38751cdb1058a99ac7f3d83983ac75dfc30cec04f9d0eccd7609b. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:28:16Z), 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/CACWV2593594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd969ea06184728b01566c40ed0e648178f76ffaf6f7f253f94f5ea167a3324. 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/CACWV2599584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f4d3e69509183966c8506c030effa39faebe0b9d64b363b11b8fcb8004dce1. 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/CACWV2573619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c9aa671ea97783692fbc9ca06065ec25e9adb10ed0b3a7656d77c9756119e5. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/CAENV2501945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c97f30aed3cf17cd4c1c2c743f07a3269f566877c84ba9f7af5629788176e7. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/CAENV2547904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000266203dbccb7deda15763997960bf0b4ca0b37d7c9caf19ea3943065172a2. 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/CAENV2526199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e6dc63173e810b90751d4346e75507411a29041fb14198ded1c05c70ff2109. 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/CAENV2567212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11975da0b628ee639fd476732c2feca9d8d4ad956bc0e348a08702d8f24339b2. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/CAENV2552711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1caea86d042281d46ea76e5abee3616f2e6cc7b803744b9b9e44ce2a895e66bc. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/CAENV2594865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5a6505c4f4e1e0e6fb16dc8cb6bea20f1e35d45e2feccb2eb28509caa381ed. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/CAGOO2503905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a7407a30e0f02895805df36116c648d961412f06fde6c4f7414e3ab3e3cc76. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/CAGOO2518038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeeddb1a6f1b5d934bd096cdcb3ba5c6eece37924cdb1ceb365bfa54dd4454e5. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CAGOO2557041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843bf94de2898032b6f7299a856b6f25836832e668c99d5f30c9ff2b1fb5876e. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CAGOO2538401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d040be61e2efd5b86b053e858d1950c18242187bbc96c02efed1f7e771bebbd. 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/CAGOO2570710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135e0afc7bb5ebe2ff78a5451cc7bc9f4c86735a8373c95a5c80b59dea59a2c4. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:40:30Z), 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/CALVP2504377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd18cb6d43ff3a9f24eec050b3ad1ed372db6d88666dc37cc93efdea7aa57ac. 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/CALVP2555052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1d0ee2454c0bc2c2037eb1f2111e5db54894f6f17343db077844f41f72a0cc. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/CALVP2569396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38493d85c2aeb466da5fac1daf4370641f29689beaa557c461ce8b927f18a853. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/CALVP2586626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323ead144f5415005e3dbfc2a4643b66c8bfc03d4bf837c83f0f2fe00b16680c. 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/CALVP2561161.