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 0xfc9373487e03ff89aee53fe91b7cd2bc729a7f7ff145b888670f0e7f5f585ebe. 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/45890577-736b-4119-bae6-dd2733a6338c.json and https://artists.proofprofile.net/proofs/artist/45890577-736b-4119-bae6-dd2733a6338c.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 0xf42265dd492089a410be35fbb6e2793ccbfee51f11afc92aa0163a006483733a. 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/HRA048918089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd4f36eadadb180ea957dd596e97bdd5ce7c20422f85d40beb8c831bde5fb58. 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/USJ3V0635540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbec93e82a34851b2cc0c1adadc7dd0ddd61b25761e0cec0da2f7ecc5e16cc4f. 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/USJ3V0635543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cc1995256a77269f81d7a2e830d671b7bc9775a0009b8e64527a06bebe2b33. 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/USJ3V0635554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610f2867f95bf22a928779d010fa2865b0924bd5cf980b9fa2d60afa2b8a7d35. 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/USJ3V0635555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349dd908e76bd977fc68efc1906d6e05ec30c7089f00c6392551f3185e5fcd7a. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:46:25Z), 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/USJ3V1084567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf990feb9a62b7e86486e79db4610ab766c3788dc39eab2fcc2a4cefa825fb1d9. Chain 2 (Bitcoin): anchored in block 957632 (2026-07-12T00:10:15Z), 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/USJ3V1084573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76ebac171d3238f5573a8cbbd8ff856be7ba26eacd2272cda7d5cc60406b0e7. 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/USJ3V1084574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6ed687c209f1e53958b3dc838fcb25bde60bcbc95444fa4f9a685b6f76509b. 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/USJ3V1084581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9548d30a7fb60fc82436b3574e8b1325d4b371d217e74d2d0c4ede9465325965. 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/USJ3V1084583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc769daa345f51dee14205ce157cec5ac54ca5d2171819c2d68481c67d61223. 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/USJ3V1073341.