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 0x5755bf90c76b9b19a8e3f7e52708175ca116e3878de45ea8511c9115a4281baf. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44696020-9cd1-4e53-a9e6-59758a1c3e24.json and https://artists.proofprofile.net/proofs/artist/44696020-9cd1-4e53-a9e6-59758a1c3e24.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 0x2bcf780ca348e8beede3a025182e89f73dd2ea8c8bd894bf46a15a5eb62f14f1. 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/QZZ8A2570585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4bd9b8cdf151826a802dea642bd9afc86851fee2a5c0d1263d540429243bd5. 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/QZZ8A2570586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5dec4bbacf9830d9dfd7bc16d97112eef6c7791f9448dc1915c397fb0e13956. 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/QZZ8A2570589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5074bc943ac8ff3f235c7623e5edb2ad6d4ccbcd74cfae6878c45613fa3fe280. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZZ8A2570593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372616e762219e97c46f18c8f478c6d685c9cc8d608e4d962b2dc3d388916bce. 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/QZZ8A2570599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c84bbaf58a8f362749d11184813091cca9c8b1939c44be7e1d01b361e9917a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZZ8A2570602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89bc2a99ebbcf8f11087bf4d03ff8da5c0714c6356d412103ef401732130de7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZZ8A2570603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9fbf22a9f64df89be46717623e756e63af106837d94a6b5ede020e2bce3ce4. 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/QZZ8A2588451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ecd093fd661526c781e5f77c71bb0d318856bbf9bd33ddba31b8a72ba1f02f2. 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/QZZ8B2523378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd151fbbfdf661090249f0151316c98f25546508e67d30d2c5e6b699e441a52b. 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/QZZ8B2523382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd585b9d34b9c302497b5d8c4d8fd15d108ebb6fc5f16cc10321202199ecf9b9f. 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/QZZ8B2523383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1405565be125297a6436039f2702b455ffc79259d5ac72e8610edaf9bc5f2b6a. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:38:13Z), 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/QZZ8B2523385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf572a90325fa21934b720c00713b93ac91847fe52758b2a89ca2ae05fe0edeed. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZZ8B2523387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6b7dcac29b571660f1be7fdd3cf69c3177cd141f4be307e67abc903f28abfb. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZZ8B2523388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1dcac1256475cdc8cfb03e8d3bd542da002945026b8dbfc312c7fba95c5245. 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/QZZ8B2523389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe940dc9470ff0fbe1639af2a05bbd1361800671d92ca0034db25449de718af8e. 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/QZZ8B2553648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c598b7acb207022a6c9327a3978f6ab59ce3ea6d575101a343596636bb9f2fa. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZZ8B2553651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5a2e4acbfa5e4d75607fa2c5d7d9fc5fda142e461e51e62f05200317dc8dc5. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZZ8B2553652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2975425fdfbcbe71354fa0aa6467d24069e549573d7a7db8aa34f04da00118d0. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:07:14Z), 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/QZZ8B2553653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a09a4b3758f0fd6c014a38453deb40bfd77252554f342b07e2b3da3515ffdd1. 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/QZZ8B2553656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55947d46985d4c19a0bd7a7f31bde3105ccf7dad8edcb1222567d5cff9b26e1. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:16:06Z), 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/QZZ8B2553659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e25fc14473829aecc0ba8834df7975f9a2bc01288cc7be6947dd084bcebcf4a. 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/QZZ8B2553660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ec0e608ebd84681dcc30b8879cdb049dec5aeb6b46225281d4054edeb872e8. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/QZZ8B2553664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe289e2a97d94146af8e22a01a22bac257cdeb518442654558d756bc9e34877. 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/QZZ8B2553667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fa018096bcc558c1bcac2d9559186abb9ea77108c2800975849151296df4aa. 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/QZZ8B2553669.