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 0xdf57e2fcfc7986bba50aeefbd5a68391b5df7023c707a39768b097a17f4f4066. 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/eb5bde85-108a-47ef-a200-2ee9d07ffcc3.json and https://artists.proofprofile.net/proofs/artist/eb5bde85-108a-47ef-a200-2ee9d07ffcc3.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 0x84c398b257c477e05dbcbd32aa491e22104e1efd32b28c40b9ca102b33efa6f3. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QMFMF1332713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce76957b0afa58b103e077498ea132f81c74abe9c373bf65a53eb587d15ba37d. 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/QMFMF1332714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6eba83161b9cfb2f9e7eaf1e1767eff2a12de360c9f639be9ad27a179d2615. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:01:31Z), 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/QMFMF1332717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34dcaf216dbd741cdb5872afa5ef1cf6c58ccf8d34c4fff7a6c3e56648fa74b. 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/QMFMF1332718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2f742fce4c45e47b6efad3fc42cceb300b8e89f0a4e8d79502214ae44df89d. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QMFMF1332719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9eb99c06d872ebb0f5a06692caef7d0e2d3eb6fa2a574d84271ef013d725c19. 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/QMFMF1332720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb964441da6e271b369fcc890388f3fe01b4b02ad377eec54b3b05c30546677. 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/QMFMF1332721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f5302f9917dab31326ab3af437a34b176c25822c8c03a900c6200478ab8205. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:49:56Z), 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/QMFMF1332722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b23c802409249bff4c9da653c9401cf202658efc79caaca3a9e5018488c1a3. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QMFMF1332723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fde222564a79ecdb1ba60ff38acb01a00de670cb0915dbe7323ff0303ca0061. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:55:27Z), 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/QMFMF1332724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb662711e1917251f40f96511d74d4e2f7f25b90508965405aef572b7eda83f61. 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/USA2P1695466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ca912c57861cbbca6baa768bb8dcbca610f420549a59cc71aec53326d39e84. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USA2P1695469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124c73fc01cd6f85fcbf78d13b425781bdd9d6ce13963f06542732ee5817b421. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:09:47Z), 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/USA2P1695470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e3a8b9ac2ca4c9914764cd5bdf73acded1320d7bfab5d098e234ec1e82455d. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/USA2P1695471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c420bbc8786373b1954bbdae1ad0b7b46f67b60f8db957bbf375ed16c35c85c. 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/USA2P1695472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed89479d649a14900940fe4ac011d122d647cb0b5a09ac520953ea526db06ebe. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:43:19Z), 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/USA2P1695473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fb56787a3c99200317a38da4e188214efed36b35525ce5fc302ab518ca4588. 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/USA2P1695474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a4b8d8d94ed56cd3cc782881960a662fa0d0bac5d3b12fc8e4f9bca80d21de. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:59:51Z), 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/USA2P1695475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7af1c4ea5c1e2f8bbac439642f1b6ed73fb834747be4c9671d945d9691a41d9. 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/USA2P1695476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedc965ac5b65f13ba794587bc29c270bce36178bf0bc3c9b98d682fdca8b8b5. 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/USA2P1695477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2a3054ba6bb2e21095ae8bab9d25634aba7922911e56029be2e8d5c6b5d104. 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/USA2P1695478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46cf2a560f008478873674b7ac70622cbfb5db0c5bc7ef9f3890ff042a6557e0. 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/USA2P1695479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c056d9057f668f774c2e951a0088b5c7fc8331feabd9bcdeba580e8bb888f9d. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:11:00Z), 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/USA2P1695480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7d2185d51fe4ad59232d2147d5db87b1d29074ac529c82813ed04d3dda483a. 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/QMDA61867978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426d36b2e27f87955b5de0284ca7f39db1ff1fa5ef3e39976911bf6d61407976. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:24:26Z), 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/QMDA61867980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b082300047e82150ba941e272fbd904170a21dbfee9a0ac8113230817e04839. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QMDA61867981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0165a199c6459c9a93656ae2807e8e927dab8422ad518283b2b361f77b26a94f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QMDA61867982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d067204ba954412b96361a23b5e6260ac9ff9769f01474fd75c2a745a32b77. 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/QMDA61867983.