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 0xcb764ea6363b0bd5349b815301d8bf536b30f810ebea31078408fd9ccfe8c88b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d235268b-9002-4140-917f-42e9c18d95b6.json and https://artists.proofprofile.net/proofs/artist/d235268b-9002-4140-917f-42e9c18d95b6.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 0xd530dc62ad54a4154aa62fa166cf9bfd0d451d1873f625685a0555538fabeaf9. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR6V81660481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54c8965a433af13c29c28f3ca22dd53ad4e97f3c30ab155598d647ba3622605. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR9W11404486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b6297fedc9f7cd7e4508348b5454e740d277aa1fd9eb9a158a00b9d67cd20c. 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/FR6PL1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96c03d7b889fec3cec33afae7aaf2ef9bad083dcc403ca45952d287298733fb. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR6PL2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45147418302f17efcd5f4c3b59dd1cfa02aee51944606ca79abfbde02e34d74. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:14:35Z), 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/FR6PL2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fbf42f61ccb8bca16806883e5f5cc487b4b18f010d470d417aeeb9fbdde61b. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/FR6PL2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a57450a016a58325435953383c78b50d887f0eeac194a6277c4dbcc07cbde51. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR6PL1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14cc42e125327c6824fc6f5fe9a09394f4bfe0846e4e875a46359601223ffea. 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/FR6PL2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e1e52d5a70804eca8f8ddfd28957c0f9f5c08e882cf5b4b4fd27753335ce01. 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/FR6PL2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9711bc17d317fc6593e8226695d57ebfb1e6c2141cad540fe30bf201ac7c514a. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/FR6PL2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa777cb6f734abc560eeda1c78c36f493401b0985eaea742864faf1da5c8db7e3. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:18:33Z), 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/FR6PL2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307b60ad2bc8691614fc97b27f88e6ba4aceff965e0deda270b76cf71829490a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FR6PL2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe947cfd35fff2c0030af54769efd3cf8ceff915357304327777cdd444b7bbd7a. 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/FR6PL2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511162a73d5aacd6b3fa0400b09843ec9f1b69d70dfca3cd1bdeca697bcf0418. 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/FR6PL2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818aa43e6755e935efb73b00c85cb4a0f63d8d3fd4d3ffefbc3d59d8416b0a2c. 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/FR6PL2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e1e52d5a70804eca8f8ddfd28957c0f9f5c08e882cf5b4b4fd27753335ce01. 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/FR6PL2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729ee613c305590d41507fc30dd7585afde58f82527726af964efe7d932801a4. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/FR6PL2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33bc08fb593bc78edd7259ae78c5792f68addabf358358ab84f95533e9442ff8. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/FR6PL2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb341d7c05be753ea8fd4bbbd358e1b9a89b57d3b57623c5663d3593583a1aca0. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:28:58Z), 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/FR6PL2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc069cbae0e31431b7e7a5dd8e958ae6de1ef45249fdb51584ae7289b1faa6430. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR6PL2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462b5331075b50b9641683d3feb5fc8cc12ed1c92cde0765a21fcb3eedf3ca11. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR6PL2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb341d7c05be753ea8fd4bbbd358e1b9a89b57d3b57623c5663d3593583a1aca0. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/FR6PL2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc069cbae0e31431b7e7a5dd8e958ae6de1ef45249fdb51584ae7289b1faa6430. 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/FR6PL2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb341d7c05be753ea8fd4bbbd358e1b9a89b57d3b57623c5663d3593583a1aca0. 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/FR6PL2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed8ea88f3f206956733fda6d30341b2b9522e48fc492c212cfffff0c539e879. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/FR6PL2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31938d7ba65c612d40be3c78535352024589964704352829d3fc8069256745ad. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR1A92101619.