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 0x1056c18fd254e684578bfa582efcc25bac4d5feed47317a96b8ff64bf35cc4d7. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92d169b4-2195-431e-8ac6-1454db7ddf46.json and https://artists.proofprofile.net/proofs/artist/92d169b4-2195-431e-8ac6-1454db7ddf46.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 0x29ee514ca7460ee9fade4c8db04a6330a48ea79d5cec4ed30176a2306f916ca2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTVM2341606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d84f265ac061609183e7c270d001dc98aaf520236c238016fae5f848568d1e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTVM2341648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e39948ff217d3a69e7ba986c877c585cae2dd9af1f7d9a701219ea050c4afe6. 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/QZMZ92472684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609e1e3db3d0f5ba2a0e871bcf2265ebb3c283dd63c5e6189f568d009b7120eb. 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/QZMZ92473152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61a4a536dadcd38ef1baf41f8910ba4d0c753bbbe227f34f9e8ae3b232c2b48. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZNJW2449620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe561f69f837454d4e76efe8617931af0b3d5292427819ed4753d62580fa8158d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNJX2494824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6584b8471b5689a3553f5ad52e231f8379a475e235997fa330b47506192a2fbb. 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/QZNJX2489149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd68b4fed4499b3caaaefb18356e6fb73b2d9234a2e4de5532cda4c52e1bc18d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:54:23Z), 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/QZTVM2472704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42312c07645b076e5210e8e41761501f798208ff4872e86adb9769f3652ea3d3. 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/QZW9M2414161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3de9ecfca06eaffa401c9bbeb29ec02e5362e3ff2051a264fd67dd1f3014740. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US7VG2526361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e37c7976b3e74726647189e09333039e946bc2c0fbdab01843fc66a18e19443. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:37:38Z), 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/US7VG2526367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb41195a3a924576006ac4f7ab4d579761498fc7bd0940e2b388ce1496769781. 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/US7VG2526345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9656e6a45eeab72937d635fee29ffd687d9a4a29bd7ebab62a5558969e637a1. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZGLS2572994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbfa406e798ef529a1342f71322b3389c5faf54d7c86643ab72133f44bb0da5. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNJV2591797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec63fbb635fe4b68cc261a7099bf915adf406c21325fcca58abc475f9ebd26a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:09:03Z), 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/QZNJY2548769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc850bf67a7c8311ddc3c7d33899a15ade61c6eb09a0459d088d87e89e70c00ca. 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/QZNJY2548782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a35180df8b21a2edde8ca30c56df1c771b25ee783234f642155aaceb8d5935. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZNJY2573698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408c1d0bce44582311e60d70cffe41e1d8d732a47812648b499d47ae89d8d6c6. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZNJZ2504254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36f12bcecc8c6749e73cdf40bf2aa854e177823bdd9d75f8b9ef3710934614e. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZNJZ2546770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1273502c4a4b1c3072438a4bdeb0d2e3371d3b42aefc079bfdcfa258f236f703. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:48:08Z), 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/QZNJZ2543117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196adb91687c0c125f59ee8bb30e6bd07e6cd8d40a9491e4acde63896e3b7493. 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/QZTPX2582726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53079eadca5ade2b2675652389e5e7705154c1586d9a246006a82fff0f46a0f. 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/QZTPX2582826.