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 0xd3773b06c56c1c3f60649edbb6fd39adc8fbbb72d20940a06cfb7b7cf20b3b91. 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/8e97477e-b5e4-4dbd-89bc-d296a84f691e.json and https://artists.proofprofile.net/proofs/artist/8e97477e-b5e4-4dbd-89bc-d296a84f691e.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 0x810607ae9c5549732e5aaeb8b9c11afcca66b9959d563c4beb2c58239a683356. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USHM92229863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd224ecd53cfe8a8a20ef10f31e920dbb71e05f2a0130dce2398a56e9fc060665. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:41:35Z), 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/USHM92229864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c47f5890b2fd1c6836750bf9027ed5b5e9b26cca08694eaaaf194e3d6ac4a2a. 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/USHM92229865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283901d31b1eed293d6e84917e12a17c62bdf9ba57aca74c8a244001b2d4aef5. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:22:45Z), 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/USHM92229868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a0ef83451e22167b2f7761c1404e037219a03cc497ac1c72f98dee5d89e0b0. 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/USHM92229869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4215a20bdf983ca30aa69e72088dfcd6852a9fff8b1cfaa0b9a55c8f62c7820. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USHM92229871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e403f3d02fbea071098f840d0a741fae7e38a0a70086e06d6d43694d1c5553. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:28:06Z), 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/USHM92288786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c070ed57aa4765203c2c6029cead49fd3dde709bad0da02ba082c92293659c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USHM92288787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4039d45ef1f804b6ecf0c53bee210ea0736ba06eca90f43b8ef25eaf3e83dfdc. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:06:22Z), 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/USHM92288801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f19813a44affb4a6ab760ccb9a49cd701ae76f92a0b043600a4028521b9d747. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USL4Q2218034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a79ea93abf986f26811c03caf46e12fc6425a13af57245b43fc2d50a2f5ad24. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/USL4Q2218035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7194a1a4dd1577e173414437e7a5601b813166be242526c3957afe1c21fd170f. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:48:24Z), 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/USL4Q2218036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf29b0af2ecdcc1f87f020a6ae1ce0903a4144e0aac15ab24760f7984a0c7ba3. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USL4Q2218037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605f49ca7c0300e3c81a45d07dab3fb549a2fb5f166679d6dfb5dec709af9cbe. 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/USL4Q2218041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11beda4b1458f019e8183c7aa3d7516bea5fc3f626a027744d423f344a26ca36. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USL4Q2218044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ace77b2127dbbef2c8d79c8f998c53406938cf7f18c3bc6531e520454468fa3. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:41:39Z), 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/USDY42324941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b279abcab2cd9f7ee3a166b5599ca941373da5fed61785ccb2a7ba03632d4d7. 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/USDY42324943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de00520ddcd21f34846d48def5687c19955616f3b9bfe7cc3c5028af44b81a4. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USDY42324944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468203e1c78c4e4c7fe5580f27aa9361be8e291a81aaa6a82dc88334c2f8cd32. 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/USDY42324950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde7ca9749ce1280d5fbc17a6c00b652e1007a3f107a2edbf387baca301a9587. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USDY42324951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ada33441bc215bcbd6110698b02470ea63d6db69db1348ae9a994f8ed17835. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:02:57Z), 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/USDY42324952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed5de944732d14bffa18d301dd48a6e41c8ce9f8a37fab3f4a6f6e1e361c788. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/USDY42324959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9baa26b7d51d14eef2d9529b445c17fece388877b7738d54ea4a0b80c8e0d137. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USDY42324961.