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 0x1cd4c0524818caa62842cc8cb4230b4ef4a326d2a7f60b5b567ee76485bff79c. 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/8a9b8e39-84f2-4694-8cbf-49a66d1948b4.json and https://artists.proofprofile.net/proofs/artist/8a9b8e39-84f2-4694-8cbf-49a66d1948b4.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 0xdd2dda13ee6814ee29e03d5fee0a2da1eb7212b23b038993f5759518a38f810d. 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/GBSMU4695516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71f3799d15c3227d0a23d368ff783766152ccb85f40af64b8f395c174539fbb. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GBSMU4695519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e02a95b7e4442539f40ba2037b193639dea49cde8f4e3d4fd87ca82e018c673. 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/GBSMU4695521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbc8b85ac549af2919b52f122c210bb78a14ed3d6be3d819f31659fe0c32d52. 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/GBSMU4695522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3919b0673a3872b4f0935061de24e52b5c48566f9d4a5e2300f9a649f9fa696. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GBSMU4695523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d67306a16297e6469734dbad64c72513a11008dc2d0721b899f3fbe45e3f96. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GBSMU4695524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d27ec62e73f69aaf4c663192e193acdd1fc99fcee9e65aca1dbe7d33b32c93. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:57:02Z), 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/GBSMU5805412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40976cfd0532c31bde7dd8fdd8216cdfaa91c5fb87a5279af5a4e91e8ae8e7f. 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/GBSMU5805413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc37b190823e700529a178c27f6509989e2582da7a21fa1b01691575587923ed. 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/GBSMU5805414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2344a1e107c9895c4af42c682d5b7466aff3dfb5ff29ce8e47eb82742500ad90. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GBSMU5805415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e97bb0199096105aafb263b12b55e2fa6c26ede94b237579144d32a71be647. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/GBSMU5805416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18658adc9bcd589917c3398a0f7607d8a1cc83a2196c8d8d4f8bb56eff142295. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/GBSMU5805418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928add3cbc18e9a735bed8008e221702f69a77c62513b66ddb4bef776b6a9c7f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:54:41Z), 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/GBSMU5805420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dce22dd731943ca146623cae556bdff8c679d3a7f5f874435367f70ab8197f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBSMU7434120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e597d76998fd520bd55cffd256121cd928ebd94b6ce3d7d8afe57b89d621e0. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/GBSMU7434123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa30c958718b98fba111f29aaaff1353db3fc0987b81fccc7dd99c9f9df5a201. 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/GBSMU7435252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb524ad4f68a9c1d378eefd91cc5dc53d1b8829cfd33f604b464e80e56bf8de1a. 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/GBSMU7435253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfb2776f889ff0359c1f9db6fd64ce7fcebe3dd6e3632c808777213434bbd41. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:10:32Z), 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/GBSMU7435254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2127920ed5b54e495e3d9172282032fb215d94459769110804c3c10146d03d. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GX3HH2259410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8199e25256716f6a03b45e37995fd0a096dd97ca3f9038cabfe29432441323. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:33:47Z), 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/GX3HH2259411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95864ca08606200a0313f6fa238ff7e0886f92b756a04b65e7c9b81718abd259. 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/GX3HH2259413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5b11874314a45572170088fa003ae97b8df0029495b97be3de757861ff7f25. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GX3HH2259414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8d05fd7bb555f1f08261d2e2c86253cb839afc64ba21bb275f59768babb2dc. 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/GX3HH2259415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a4d68deb320c362935765b5e8712cf3d77f1799a62ac150b1d0383a6baf331. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/GX3HH2259417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f4305ae8e512772af90eb291bc7d561216a4611ff03a000002463be59bd7f6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GX3HH2259418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3981941125c63d63c303e013825ab4445d75935cb3d9f0db04935d88304a04c. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/GX89G2494671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9bfb8607934285e8f5462d9f209fe1623284528946b369c2cd5e989493461a. 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/GX89G2486642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84df6cfa66215e136c5793815651a287e0391a2a344e4082625f6136a955cd30. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:52:37Z), 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/GX89G2422307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2575b74111d2ce934e838931aa0be8bac183ed6923b84e7d423b3cc9ca394649. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/GX89G2444788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380ed6297705151555f25f777a85dc8671b4263a7c00d67eaa5904156ac11806. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GX89G2444108.