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 0x9d365d74e5479a8e46a5795e106af6af1cde05d2b22345a0e7a4a003d8ec8545. 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/95275d32-e63a-4140-b79f-1bf233e7f743.json and https://artists.proofprofile.net/proofs/artist/95275d32-e63a-4140-b79f-1bf233e7f743.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 0x9f2c2152650cf76e5c261fe8ffda23044efb32a9f44b02014b7d28b05ddc037f. 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/FR33Y0300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43dce3bd0f9497d6ddfa9ca3507834a23f3989c13a05b823d4901b68ba2dd38. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/FR33Y0300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe592257e511701c057a0ef71e47d2860ce0f8049ba392975a6f82536814bed30. 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/FR33Y0300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d80bc62ab51c2991a3d4ec0d88b97d1b8bc9575b95f53b4de2d645c56dfb09e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:08:24Z), 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/FR33Y0300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33097e9e4e36729d74c86806e6046e51cdd394da0388c092ba6f8e2cbe06e64d. 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/FR33Y0300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7e3ab8d82600d4ba3cebf3d967fe402031e56174b29713f34940aad542167b. 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/FR33Y0300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796a36b933cec3f7d8eb32abb948dc86c0fefd69900aa14100880083ccbf8141. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/FR33Y0300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7beac45a62348719649b74f4b587883c4ebb48d8022e76e2c02d8540e2f658. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:37:49Z), 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/FR33Y0300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f96c3814a64b8679f5006fe2a5487fca703ba625917567b36d975963238007. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FR33Y0300076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83dfbe0a7e3aba41926bbf857447acf1458da6fba0fc30fc11eedee597c885fe. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/FR3T40400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da0cff0902f7e987dd499e030dcde70ec9dcdb018d2dd0ecf4ba7aca47fe073. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:01:01Z), 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/FR3T40400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9667a38429d8328d85bba1fcb7faf82c137cf49dfc02021972ad631715230a65. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/FR3T40400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2c1f515c842eed9ba897ef82fd445ec4faae79501d3df22da74c4194b2256b. 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/FR3T40400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a8fee2577fca3cbf2e967ed12b58f52544db788ba7bbf8676834b90065ab86. 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/FR3T40400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2963c8e1090a0af7306b55a86147c4fd00fb60a5d92ec4f98c0f4cf744174f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FR3T40400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1044d8c014f588ee3a9cd55f6cb2877f64204586545680315edaf73ccff2a84b. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:00:17Z), 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/FR3T40400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11baa83a1daf7a495d49c012776b0dbf2c5a10d5394ecfd13918847c04645f0. 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/FR3T40500039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd688f10bd3712032a5090eb7774ee322cfb4b247b07af333787b00b4cc347f61. 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/SNA1A2000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d815a7f41807676ccf0fff6fe6405d4e5438b08b4e96e704e5ebd583faa7acb. 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/SNA1A2000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab96bfa64a57d227dc5d5df09d56c622463fa92d65240fc645646c2238159e7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SNA1A2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95294491bdc9acb072cf6dbae8cd030db4f7f0da842737746b5221b5a217be17. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:41:22Z), 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/SNA1A2000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1783eb4497ead492d3a9a24de4e1eaf8a26fa1832a7b630a06a2edf8d2d302b6. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/SNA1A2000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e13a3281dfbda365076693b9f014ca8be8a4a782a2a0fbae503fb90f3604cc5. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:05:13Z), 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/SNA1A2000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d1bedbcb2bf23cdca91ad47107fd58b96611669316f66cc69bbcd6abf07d68. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/FR9W12356763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ba0bdd1bdfa208c3188977285fc55e7ec6a256de4ce1c4765933c400dc5168. 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/FR9W12327965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76b2424aa57e339145e53ee5b70f516ebc101b6cdc08150588e65fc6dd4f890. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/FR9W12333035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ef0a681918bd515e4059d1a8180f5cd4a031c25615aa31b0c0cd6620eafadb. 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/SNA1A2000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f65d0f0d3799904a4a96c2697fee04802594724de8985875c678c0a0e45e90. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/FR9W12360131.