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 0xb909dde32c79bb58c2c649b35d2030c753059cd0958beeb47d10a3c0962f9d3b. 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/be46a99a-4ba0-477d-a955-e96b85968f32.json and https://artists.proofprofile.net/proofs/artist/be46a99a-4ba0-477d-a955-e96b85968f32.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 0x44e23e7beb194027a93132cec610c051244c22bf477b8f952693d6e67e8c3c7f. 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/USL4Q1918818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84313c6a5380f2aa3604b3639fb03c2d310626042630936504289824a692e59a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USL4Q1918686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc577565fdb26654b40ddf375da6feeeb29f778a0e65902da5156305d28087acf. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/USL4Q1918689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140a72107b87b11986099787f937d036afe19d9cef9b0fa1883ab962caaae08f. Chain 2 (Bitcoin): anchored in block 957611 (2026-07-11T21:33:50Z), 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/USL4Q1918690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a72c2a1a765f6fe57ea1ccd7c3a0a2a0cd8544362e7343c75532bc5c002a80. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:10:22Z), 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/USHM91922360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2006d54ee579a0da67719e9886152cbb659fe9322f2d8525f0901abd82f64a4. 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/TCADN1893189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aef107504248f3c7cbf3afb90ad16bda5f94da1f1bbfc7c20c4165ea84b43ec. 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/TCADN1893200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b4e38b7bb27490d0bfb86d20429788b69ca934a5131a9fe2c70fc79a8f598e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:36:07Z), 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/TCADN1893212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62d2c4ac7bcf6f4397ce2557072da389d05cf44340815b9a9a2748b28a57d3c. 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/TCADN1893213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97ac6bea0cbf68e8f69381c0d631d5ba957fa61cc5fab1ab93a341c495ba6dc. 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/TCADJ1723836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1bce357806e71b86b5e5d71480940148b9e626706bbfcad05f172aefb1d936. 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/TCADJ1723852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd37d78b950d5896419b9e6e3db0316d81f386b546c50bb71b2766cef48ac034. 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/TCADG1739226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7358cae6191b70000709e813200aca84a51195c4ca1561c24dd90acbe49038. 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/TCADG1739635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7b02416f00ccf73f61dcc2511b4ffd7439fc9300a5adb33a5aa78be469b884. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:17:08Z), 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/TCADJ1723468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf111fea7036096df0e426b3d94df238ca613a9da4860231da325a782e2f943a2. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/TCADJ1723470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e49f0c2796be4bcc4a52dbe3487b66177c8a68df3d629bcc2e419b6e822105. 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/TCADJ1723474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac2ff8cc37654b9144a726c95c0ca158ae99708dbed18a32f768384ef8c906f. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/TCADJ1723475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4252751f2edacb743005d2fd184786c8e7c11c43556a9ac399e103d00764032. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TCAEY2069901.