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 0x8ba0f96cea0dbd890b79010c6258a90956dac297b1a509c0a4c11cb0dea5958e. 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/668b7359-04cd-4c82-a75f-285821094817.json and https://artists.proofprofile.net/proofs/artist/668b7359-04cd-4c82-a75f-285821094817.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 0x43d8f3fb083bd807676580874ffcbf1275d608c321066f2f9dcf3b5b42ca235b. 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/DKHB40700109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932483629251217418c81f92b360aa77d12327fae1aa1f4d6a364bfcda249e9d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DKBV70808805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d20868f68a478c5470c989272e5dfe27ea0f1f2f12191aa8bb4c050d6dccaa. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DKBV70808808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28120c4fbdf36c3448144eb074287891acc1a6377a2cd14922469a4ed2e200cf. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:56:29Z), 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/DKBV70808810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f38db7f3299c0ec3f195f5adc1b9ba660834e2a07401f121176330d2d7ffadf. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:00:02Z), 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/DKBV70808811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed730131a4b99cf6e2cd41acaee8658fe27925e5de7027df44621e2fb9279a6c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DKBV70808812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0785c32a3846e36d38ac7b16702020c6649d9b9219ef37663e652cba19273a0e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DKBV70808814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ea52762c0e7e9b23d34cbe043e686e6023e4ab5d94b3c9760cdd8a384af23a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DKBV70808815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4628dd89adaae2d29eeaa8f810486891c98ed23a34953552eab21f0d9f9fe17. 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/DKBV70808816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc81eda142d1c6608c4c66c3e026a288ab71a917a85a492f82aa70fafcbdddc8. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:07:42Z), 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/DKBV70909101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e79a3d15cb4e1d86f508e55419ab4334fad6770e42dc21dae1ae19c310c6e7d. 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/DKBV70916901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c48fc012c3291499d557a49da8d2f10de90f9e910b76555edba2d721116b87f. 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/DKBV70909201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6478dfdcd9bfe3226bed04a2bc3d62860680cd0b38bc5dffda181eedb86e58b3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DKUM71200709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe788f79960d0640cbfe380a34ff2d5564597198fe8f7517401a2e9d0b886d62b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:57:48Z), 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/DKUM71200710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174700375224f074ad8c70baa949dd1f84528278421f0c5ecf4ba9b4e818d966. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/DKUM71200711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a83e726d3067d1a16a828146943da297bf2b4f2a760ded039d0b4b104c3425. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:31:49Z), 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/DKUM71200712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37279e52dee3269ceb6f15c16278102ca3cc1e0176b5eb08723784b578c8cae. 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/DKUM71200713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b28b330a844bfe175600f8d843ccb8dcb3473d3d81658f7a7d615a0bf43067. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DKUM71200715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fefac54da144b294b88d58998b3ef0a9e7b1390c52852222d6322f2e7adebd. 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/DKUM71200716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ab008a7152b8c444091cff7811d98408a13174cfa97dea3f50df65527c5ccb. 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/DKUM71200718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5370971920b5b8c2d487300b56d6119252c48e406efbbad3dc72c950bf3b89f6. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/DKUM71200719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101f35c3b334600986531f076da8115b3f49737c5e812d909d6cbaad6bf7a869. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:48:34Z), 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/DKUM71200720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd4523a2673e7495dbbf169ca2d312eaf9a7a47278517893105b6c6d65e2508. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:34:47Z), 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/DKUM71200721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c93155737aa2c9d96d906daae500541b62be5ea4fe054d55b8c8a71e6b86988. 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/DKBV71007114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c85ca3d0cca2aa3779b33a7604796c964318cecbc42daacda20941910c96be. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/DKABB1100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b58cdfcb0b502dfef713e099e14667c95281f507c6236cb8162b7b867a8a01. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/DKABB1100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5bbb4dd7ec896024385efd9634617f8aa4012831750d5ad23258abdb89432a. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/DKABB1100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7b01600be6a0419b93077bded62aa54da4f21ed7f01a046115eefca870cf38. 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/DKABB1100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbadc4c7e89ad16e86693ae866a8471057a69a4167400a6948df707ce0f3dd03. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:04:41Z), 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/DKABB1100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564a282ef8ba800ff641247fa3f181e8314476689c977d419e3ac9258051f79d. 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/DKABB1100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d76feda5189d54101b9813619402802e8c35b0aac87135a90a1269a682ba45a. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DKABB1100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f92eaab50fcb888e48d1e01108205db951bbae0fc276757d642ce80d661a5c. 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/DKABB1100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ff296db30af39df9564fb10e07a024edd2f986085bc9ed7c94d835606f96e7. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/DKABB1100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13976e55e120e6914ea26fba479d3b398133e144ac008cb3f6549880b210d1eb. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:27:27Z), 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/DKYC41300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e8a611ca771ee3c81a9ab739f17bebf0185218646e664a211aaab09bea4897. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DKYC41300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f30a9e7af383ce43e2543ad675d97aa6ab98db53858c9606da8c4ae44a978b2. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/DKYC41300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4729cf6b801a5dac31251347b9fd50ec4d6ca0a38c667dce0b3ba1b1e0a55d00. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM6N22083854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73936914b49eda8081492f325a2acadd33e70eb43fd1d972395a3a26193223f. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/DKF6G2200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5812fdcc327d54af074c66fd854741c5d577737475637c5b373aa1b0dcb7184f. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:05:11Z), 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/QM4TW2340974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07ed6193bddaf19a2f3cd5ff798c42cd28a1bffd82df36f0c924946d3daf8f8. 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/QM4TW2340976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac3ea6f563efa72d4405ae8eb419f4c2414d57a7fb4bd1bcaa76a73b7b8e75d. 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/QM4TW2340977.