1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xd89e6ce0e4eff7cc1c49b7a73c58c541538dac416e942a7c2b74f4d5778e0c81. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/360fd892-cdd7-4273-aa05-151c84d84054.json and https://artists.proofprofile.net/proofs/artist/360fd892-cdd7-4273-aa05-151c84d84054.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 → block OTSBitcoinBlock must exist at that height 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 0x280c297f56a8c56ec5112443d5023571e614f854dd897dca628bd010ab03df66. 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/QZQAY2442587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae27e89f1ba0e7529485217c137b3619277956f6a470b643797f2be3fbc256d. 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/QZQAY2466193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce68df2228dc855bb20a17d1bbea7c22ae09b80284a76f2bb1bf8c28d91372a2. 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/QZQAY2445301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21defc18ea2332a154531b4089ef0d3601beb92498af3238282ed614a6fb89fe. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZQAY2499723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f3a783e3f235f2a73109c20c053246eb3f6436c185b5f2e741e270a5870b7f. 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/QZQAY2478803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16b97f268c1f078f026a1c5895e5618444a0d8cebd806c5e00ca5d47ccf983c. 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/QZQAY2412912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee61aeb4e88a5e8918894decc87c1370199d10aa0062589e6f901d76e511ed8. 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/QZQAY2477127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26776dd0d34ea11197b7f969c7065d8a037fef0ae463b350b48cfa8867b3680. 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/QZQAY2584628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5208a3820e008ae851029fac62b9cad13f56bf5c9b1a7763cb51a8bf537c51f. 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/QZQAY2507941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef478f999ce1cd45d248842472b6a1fed3e9db3f714516953d1a493519464626. 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/QZQAY2532848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a2f3918fade920ff5ae1892c6e147acd4ad91ff126000e2a13da5c69e087df. 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/QZQAY2572106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6486abfe76e41102ad660886ca2b90fbf5b4b67ef0081f800d4b7c7ae1ae2152. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZQAY2547674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e22211564497b0ab2cd0b3c61f10f10a097c671a25cff1884b76e81f89912a3. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZQAY2582295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc932232dc414210e82ca7fdcce814b7ebab811ecf2a04b4150ac122ca3fe94cb. 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/QZQAY2547593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11ebba3707c80017965190d8de1bcb2f3f303a127e937d8992184d5cc9bdf6d. 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/QZQAY2573510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7246530bf44ed4bd40b282fa15a427f42a6d4b7a33b9cdbf8769c9fdc0cd1aa1. 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/QZQAY2558213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ed54ba96a57148956917637ca7a05207a57945a9d2e2fcb1b239ceb045c338. 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/QZQAY2519261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716a19a47cc2aa9001da974a92862955cf38ef52913ca06cb9657234cfb27344. 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/QZK6Q2582354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5da21cc4828174a755fb7279cb3c3903fbb883d100b875a4329bc85da9147e2. 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/QZK6P2509404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2fcb60cd55dd332769fc3aebc1fb907352e54d976778612b8e62e5b8b74b139. 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/QZK6M2521287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8351df4a30d93106b060727ab4b3a2e2208dcf6b03f8dff1e90f825432e728. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZK6M2551559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fe98ea13e6cb593af9687edd25c27bbfb99385881ce6d85dc573419f795ac2. 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/QZK6K2511284.