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 0xd43e8b2342e8b735c3ec0acf1a982ef84368a2cf9e45108de575e2201c2b798f. 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/2ab98c4a-5089-45ba-9585-1a659bf29c76.json and https://artists.proofprofile.net/proofs/artist/2ab98c4a-5089-45ba-9585-1a659bf29c76.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 0x673339c65638a658d2dc91d6c91b461a7ab68868dcd329e91162fa66a0ee70f1. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZNWT2511198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd68c2cef899a89eb7b24fabcd716853469347f89df68c75ef9b752055e58a9. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZNWT2511178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x166d53d425c6d76d933bcec3b296c6bd41f4f7c0456ee72d05a79b7d8b88b297. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZNWT2511181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a64ab356c4a5759676eee0fa43f1cdb9e99dc7053e6e674f087d54611b25dff. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNWT2509522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56be43b2ed42bf08b07ca02913206e8546ac6608d3949f7ad32e3f40dd3f19f. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZNWT2511197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d4bfe764aeca74d759de384fd28012f9a17610f7e14d7b8b7711ab2629369e. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNWT2511177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa1ea4cee698575729ea4e3d079cf92ab141f12b5839a9bade8390ca820592d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZNWT2511171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98dc4fc1b5e1ba760c395ac40ce78aed11d1e57ab8716d9ce4be81453351e60d. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNWT2511172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4b72842d260dc546a9e9d5dedb8a6d3968e3c3a389fdd9741fe642df0a5d8a. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZNWT2511195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c491f045548ba56d44ae811dea1176180ddc7e3f370ee954e7a4e426091bd0. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZNWT2511194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41464ebfc2a3fef56da036bf9e5a68dd34c4d6c656599ca16b2e72e24d9049d7. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZNWT2511174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0da5e17e1ea042750746935fa0e78cec188babddca5a82886c19ecca5c7fccb. 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/QZNWT2511173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c31f9e1446dc35dccb151a7636454cd3e8695bbae68565acf914f99522d0cbf. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZNWT2511180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ceda3726762dae7870556173c4dd2044b41fccb7320abfb368d5cf750aecf0. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNWT2511175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f249d43f4db304e6c8a74b95d70b9cb8097ce64375b448b5cf71786eb04b0a5. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZNWT2511182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff25b4716c681c107f330ff7d34ff8778b1b4af0124861dcebc58ccca0c1a523. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZNWT2511196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1422fb2452e66b308f0ec4ee7fe0fed36812380b9deacd215b18262fec8e54d. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNWT2511183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b55ac3076f8546780a1412d42642e9d9af8befe254c6ceed1e82d170bfbab3. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNWT2511199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968da984f7b46a1511f79d46e0cf11e558b827f43786b936e504153ca40205a5. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZNWT2511179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef35d5518af1be217c9b447c68615d4e9dea7b5182a9b702722b65647b348fa1. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QZNWT2511176.