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 0xb7311f036f171ee98e4e21f0f0b4dbb6ebe38f21eb2ad86effec4d0d8bc27514. 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/2c9bc516-9468-4021-bfae-b04528559f60.json and https://artists.proofprofile.net/proofs/artist/2c9bc516-9468-4021-bfae-b04528559f60.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 0xcb494c80cf5ea25e98b9dfeec2a9c0fc7d14016a20a8d52b216610f6a233f37f. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/US7VG1751369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a1500f9587da974866fe2797706cce45022c880390e8ded33dc8b47c16d6cd. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/US7VG1751370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8280c149731f83b97a37b381937e1a7b8d2139ee6846cfcda77585ce384823. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US7VG1751371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee7ec1786a45d0dc0eda8001e8b24d0bdbb1fefd4694a0847431f43d86309d5. 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/US7VG1751372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713fc62817a8238c86ca8806bf957d30a3add0eb5aef2abb7b9e43221c00b613. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/US7VG1751374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6288416abee73007ae3d30d565a5ee801ecd4033404cebe826969c64577b4c45. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/US7VG1751375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc07a7e404cb042141d80321b1aa0cd915a94f18b9328cf4bbea63c8e2be87b9. 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/US7VG1751378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa146bd47bbc8d5d1698aa76fe8139a35bea96f518006f5f63a0f21ece15479c2. 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/US7VG1751379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20e93159aa31e7df4f77a5837bd178fabd838b7a68fbc62d4a888424724d30a. 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/US7VG1751380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280550e8e2fcbadd07a50a0d3ba01112a4c4f07d979637dddf07df502112bc05. 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/US7VG1756690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb074bfe8cff3d827868ae67f71120bc3caa1a94b7c9c1652f0857e232de1e047. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNJV2038782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c56b4eddefe92d19f65cc78f02d99bbd7bf577b3737604d02f771c8c415938. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZ5AB2253391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87730a762cc2e4e813aaba16010e62481ebc8cf1d63114cf78acc69487dd9f05. 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/QZHZ52229181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6990138f340f5c7d619ff5bd6c8975bb68820bd54cfa8acb9e8f72cdd6d9e29. 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/QZHZ52229182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c56b4eddefe92d19f65cc78f02d99bbd7bf577b3737604d02f771c8c415938. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZ5AB2253391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e26e73a8d8addcb2a5bef18ddf40c2d481014875a19790d04ed1553be4fb3cd. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:07:37Z), 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/QZHZ52229183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480a531f87e5a88f8cf78bccb38178a726760288d74e83f62eb7a80227036511. 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/QZHZ52229184.
Medley: En Mi Cara Tengo / Con Mi Cabeza Digo Sí - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4313a11656c04ad21b860a142a3b0582de380681568d9b4846342e2040eab4. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:38:01Z), 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/QZHZ52229185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1898e1d335af8836cb14ba2ae0e3da79b5d3f29e807f32c8a49f41b86d728797. 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/QZGLS2261883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e4963fa86b52505fec6e9be2a3ea1849b3d97279f97a573692ecd4311065e90. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHZ52229187.