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 0xe91f6afc78325a498124b913b0877ffab701f9e065abc4bf2132754627867509. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c3083db8-76cb-4617-9fe0-6fdae9c5f83d.json and https://artists.proofprofile.net/proofs/artist/c3083db8-76cb-4617-9fe0-6fdae9c5f83d.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 0xb0f58f2e688e643c713647aab55e025cff5e81af832c9d3e09244db99778ca2f. 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/DEZN82530960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f0f79cd1e972745b65fe9eeafb8d1a46f704d9172bf3c63c08a948c690d97b. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/DEZN82530972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce9f16e745089a91116142fc524dbb6046bcb745fd09543ec9b68de234fe228. 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/DEZN82530979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6a1c6c8fe9d0fd8bb95441ee1a006c0867a646ad093f8992bab40282c8973a. 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/DEZN82530963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa8f8d203c7a7c936eac4292175148c3fbc3eb7b08d83b316534fc8865d9caa. 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/DEZN82531166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565591325313af00e94cad4ac38d04305d1692fe6c3de1a869f4dd91c1c812d5. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:09:29Z), 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/DEZN82531087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39aedf0ea5f8522260aaeb181e0d5444869c446790cd4018ae8e708f65bcf262. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DEZN82531165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0a11e37e139d53f9cfe8a81e84408d662c1010fa8e8d75e2e7bb58d0e18bff. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:34:57Z), 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/DEZN82531045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b0df487d50b1ee9e45fc2fbaf2480cb6f0d954a7fe869b7749020fd780a9d8. 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/DEZN82531280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f927273f6d6ae273d699c4f910593a448a3e08b835a4ffe05b8f1ab0bb6875c. 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/DEZN82530814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb3841114e8ad15ee0e5e90e909d2926c4981ee87ed7c80264b1e46f28a0bb9. 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/DEZN82531157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618c19ea03d4ae7066f9a0532a853fe93b490c20b0422ff47e473f795eb2261b. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/DEZN82531266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9ba191077a0d81a026e6094e656d2350ff7de8ae26667f0cb7a3a9973b4ebf. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/DEZN82531111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ee6bd15a94210860088a1fe919ac2c909df00f88d879934e5b9953724a1988. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEZN82530971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9efcadffb974e44a1976de066ee21c1f0ed2f65aa97d74ae4d317d9e80dfc7a. 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/DEZN82531069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9b703e932d3431e87de7ba0d47c251fb1376020d667695975ee3b5e61cac4f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DEZN82531293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2d283aede6d3f84bbd0292e26100d8a8233c7d49debfeebf77f55fc35f3657. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DEZN82530872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1932dea8a9d110af0d4c3c7734270bfa89fe391b7a73f35bdcad66b800c1a1f9. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/DEZN82531065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe217c20b000e1ad6543ed7ebe96188f2a013582d440338e62ac56490a095f35c. 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/DEZN82531084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b23ef5859a245d96cea4f45306b2105b6b851c87dc1ed513cd54a7d4bb18177. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEZN82530993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154b7ab6e72e0dd4685dce978d7cb9a582d6a46222598354da59a8699c93e7a6. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DEZN82530819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84eca45704076836ab88f766aff15353f92fd765c82b4e1da0e7cf669a757353. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEZN82531066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4a10e2afef5ed393f3bcf8df87e31d133001d18244ec499e413a0a397b8d8a. 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/DEZN82531249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2516f79de48b03618fa534b72d482c01b49d96816e260479eadeb8480ff133f. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEZN82531275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84e82b7b040258d08d8a40f031bede37d850275999a41262e6fbcb225dfae7e. 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/DEZN82531112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f4b3fd999cf3cf1f0d1b28f4dcc3b994c9e86c04a3240c4f5fcd4f48a46213. 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/DEZN82530851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c92de599e18b4826f11508f0192abfee84538862b288abcc6605f8d2319a74b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DEZN82530901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cacf16aa6fef930cb58ef9adb7459b96326794a95b7a45c3752e1b7053b1101. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:19:01Z), 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/DEZN82531024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b00bbf2257d682e510d13406c8815f004d94225debc4ed706adc798f4b87451. 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/DEZN82531060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286af2ba938479778c3e01341f0b06e5e9f356ee809d938d6e58244409f83df8. 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/DEZN82531211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ecf5e82ba4daf9b96b797bb1bfc14711f5aeb6a026ca6604ce5a6bb9c275bb. 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/DEZN82530787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2689cf4b9e94ccfe46d6377fe8d86b4e031170cb13eb8bb5bc66b638c40488d2. 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/DEZN82530873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d5a74aad3c15861da34061d8fe48b0799b72e1aae059c1a64ede23d1c30132. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/DEZN82531292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23bef0b1b0070eb83eb60667d7e324a1bce5158ad563b0ea6d2a853d3813193. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DEZN82530981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740ec0625ad8dded70e40ddaad59414d8a9ef81de638e0cb8f3e66114c197906. 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/DEZN82531198.