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 0x0392ee718dfce711f9f86768da1e295dbc5de9dc1a7acec66b0f828b45abd5cd. 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/8bc7b83d-e4b5-4946-8ebf-aef2ef8c2f34.json and https://artists.proofprofile.net/proofs/artist/8bc7b83d-e4b5-4946-8ebf-aef2ef8c2f34.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 0xbd451ffa2024213f5cef7a04e27871b7c888e7666bf5a8d9b34506c86ba83f1a. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/ATN261561201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877473e518eca0d6f18a8202c6ee602e26358e447a5ef59b7aca25f67fb1beb4. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/ATN261560902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda474671a50f04684598104361df4a0506662ecb791da403d602ee0152462ab1. 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/ATN261560904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58bdbd235ccfdc3ddc5797641571ee2ce4a20d6dfdbeb2728fff96742cd1f9c. 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/ATN261560905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11aa560641c6bddb99dfb19ca940ef516afb73dd2e892213d3a394834254c545. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/ATN261560906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7965ae454e3fd5d35d2a39e0e29c72a28b8e4b55e2f8d5ba1b70989533435241. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:09:13Z), 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/ATN261560907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c0abe2c86ac11c9a506454ba57bbf4c8222a50e308c332a815ba98f3efcdc3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ATN261560908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c91d37e62929beae6b3a721a0e00017a6a4d34dcc35a501e4b7bae8bc91054a. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/ATN261560910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4961fd51a424ceba456521e9001b3a142645f15bad95539025214a9edacb2c58. 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/ATN261561202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a19682b95edec58b8e2c825a0d57886e6ba03c44b206996ede79d31a963d6f3. 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/ATN261561103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c411c2d0d6c6f6389d6a90f4c2d5c842a222158e8c56469fda14f17c849959. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ATN261561105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f996118e6282e85801a92275649a4791f4fd27fe6745f4d8770376e5854ca4. 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/ATN261561002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10478607c36a3f9f1df38805272bc12757fe1bb37e1decfa8b325f0087238e25. 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/ATN261561004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62530eaa493b7bd5df53af113e8e076a6d2c51af87b18c3688ed3acc2fb4762. 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/ATN261561006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5046b7a360aca2e3612fc39d96ffef781d4359de89339f7b8483f220dbc13088. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/ATN261350506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b77b9679f9b5215ef3c5f723846f433ca9a6a3ddafafcde7571c10b1668f95. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:37:58Z), 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/DER371169502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb101a9c94f2f6839fafe90f979526242018fb3792c5dec44ce151f40361c87. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DER371169504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41263bfe717cda28a44a4e920fbcac2e391f60b0c3d8466760e265a9a75dc97. 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/ATN261982701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c0768a2e4c960f0550bd653913e46efa255c653e676e000d4fd968c70100d3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ATN261982703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd839830335c16e7bfbc4bea112f68e6bcfa3c0c7409b8dd7734a0489e710f046. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ATN262318709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c43e9311dd0d68edc70d9dd1f1a1092fd82aed57c446fcf0972c295e6d34f5. 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/ATN262318702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac4b50e9397244490dcaea4a86afc86bb78273417cedea61c0cbb74d8105f7c. 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/ATN262318701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2600054a3ae7d86a2ea359da8cdf1277a5621b3ca823758b55a642956102b2. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:57:37Z), 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/ATN262318703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e90f83c7c38b1b259fa982ec1909c985f2149554dfa7572766389e21dfc995. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/ATN262318704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2773fa38bd119efc20e8f4f993ff291276f5d8ee37500149a97fe5bfb96e2e1f. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/ATN262318705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c29e6b57cca8ae125b57ccac6c09331d01ff0e2869f2a0d54ebb94d960a122. 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/ATN262318707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0005fb631b9d1f30ca4a678b7af31637083a8cd1af29aadcaae47bb184b5f41a. 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/ATN262318710.