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 0x2be381283aa5793e782fed7b5efe629caa1cc295964c5d48f161681eb2b7e47c. 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/0589eaa3-a5d9-4af4-b151-cd73e4953c49.json and https://artists.proofprofile.net/proofs/artist/0589eaa3-a5d9-4af4-b151-cd73e4953c49.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 0x02cb7f5414ad4606f3d096730e169118b3b60e6e0ef907e694af618723b0574c. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/NL1LE2000637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb5798a455b92eb25e6522d5f5564bc31be0e8da76160934ea8ecbec595ef3f. 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/NL1LE2000639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e5a88527ecf6226eeea3e257f3c49632f78b0c7ec465e4e1fac102f1985f38. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/NL1LE2000641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3bff7d59508a4b5fd81a8a8c8d299aac7e8332afe1c470422dc48e7af65924. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/NL1LE2000642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6030b91ca872c380a1f5518632aa11d08a9fec7bb57cc6a59044443a35a3ee65. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/NL1LE2000643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cb9d0532d4082d81361afe2057c532c8253ebdb94bc8bed9e9968dfb8173b6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NL1LE2202589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09922800c30f3a0fb70c8509c2e7665fb32f9c37689047b2908b0e03a28ae213. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRPGB2428910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09922800c30f3a0fb70c8509c2e7665fb32f9c37689047b2908b0e03a28ae213. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRPGB2428910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b59c287ff87b1d086bc8da560b706995ddefcf0450fa1f9065345f24fb796f4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRPGB2428950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a41d912085f812400e7eb01f8dc717c4b49891bd05b570e36881347e94b6a4a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRPGB2428980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340a6c4f4cf0d18a90d19d763365f5204a55f0784acb2d27e194218ffb85af91. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NL1LE2000638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2483818e366e2607ba5a3e7b182c30e74662a899ed21ffb034aa0d523d2262ed. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NL1LE2001486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cb9d0532d4082d81361afe2057c532c8253ebdb94bc8bed9e9968dfb8173b6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NL1LE2202589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41abfdb19b2eb50cf6818b64c2bc01374c82d889542936f77f3959d50ef14496. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NL1LE2102510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e2800905bf875dd76742af956a004c5c14053fde8bc909029033b48c745dc9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKQU1886830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d35f5758fc8c77b89c5657b3a3d190611641a28b80f73d48d84efac6da864f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NL1LE2202618.