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 0x78c6329129c070b72b7fe46efbd9e9d44b88d1b7683949fd0f48f11deaac84da. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab89100e-4edc-4d15-a87a-2bf8d61fddd7.json and https://artists.proofprofile.net/proofs/artist/ab89100e-4edc-4d15-a87a-2bf8d61fddd7.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 0x8ea43e98ca1b8fb4ddd5d30e791dee8e6981d9ca8c5c05af7b45956623151918. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:07:20Z), 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/QZGLS1991350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e8a3f9eca98d7665a0150abcdf4aa2627016d2610bd229482c049593cb5931. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:01:58Z), 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/QZGLS1991352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a3fa36e7c51ef243309cb701b0ee1b7d6469c3ebd73ceab37723dde0d237d0. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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/QZGLS1991354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf09ba2f279467db6230665257829162784496abfa72f91ad966c57385fcc51b. 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/QZGLS1991357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309017326f7b989d9fefd5f67a52238e26535971361e2e8b95159a6dda789455. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZGLS1991358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0acb96291dd4a44eefa41b73dd996d75c61314fbf37fb5bde396f82d95e83f1c. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/USANG2155972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe131bbbe6be0c955c5d9179c2111d5ae27e6b444a69b07694cbd0bdc4421971. 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/USANG2155975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ec540bfa9b061218fba4055e7d912db4246533e74aa04e3e23977bb9cc4b21. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/USANG2155977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ba388e69edf6d279c90dbd9f613afa3d2e6162474561eacebc03ddd2b49a3a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USANG2155979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966d5fd5f43a6c71a948ddc3612c576221ce262b90acd1a0b926565c12842e99. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/USANG2155981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510f3ccb8ba1c257613dccd6fa2433b6f3b2b30623fe23f772a6ed5475cf0c76. 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/USANG2155985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2baceaecbff7f1f49d967364a96ba020566da75c9c1b96edf0f4dc8c3570bac5. 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/USANG2155986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06360b9f58158b02f66ceda14cd460ce19f875cdbcb1b420777faab3a0bf903d. 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/USANG2155988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0aa5b73e8747179d5568cc782c0d7c4b79834608ec39d3c87b36f69979a3c7d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/US7VG1844867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a352d9655630d81672e34e85ecf9de8fe8ab5629c12b420ff60c6b595e9314. 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/US7VG1844868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc876182eec4a0a96857974882ed9746febaa802334fd8e6833059664306ac0e. 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/US7VG1844870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539ce02129ccc4d5e4ff49ce8f82c4ad9c0b6d012e2a4a20652882052c5b5ded. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/US7VG1844872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893c450a7c0f6cf841a75e27d34aa3ec5223bdd4f6551bc45b39fa4d033c3c9f. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:04:20Z), 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/US7VG1844873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049e09e529370ab9632008bee0b95bfb5cd5ce4465e2957c6ff3e6273c5be870. 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/US7VG1844874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa47bf632b619b4623d6ddb65b9e6fa3eed7f67cfd96ad928e6309e38a9a797. 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/QZGLM2055156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3f62f8871c67766ae166abc9d827305a4032a225983c32349b06932ad38ef1. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QM3DF2133064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f13b69d795e28629e4b7b5cf68ec43f7a0ce982879f30cf35dd9c7dbb091b1d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USANG2259655.