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 0xeab5432ab90a49267a5d53fdcdcc79029748b257585be0aa6006fbddee926ca0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fec34a30-5468-4e5d-9866-1c3bb16feef8.json and https://artists.proofprofile.net/proofs/artist/fec34a30-5468-4e5d-9866-1c3bb16feef8.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 0x65ba0ad28527f52efdfd6d4cb8809d1a4802f2af38566da8c0b87d2a4fd078ef. 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/QZDA71872527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b27d3be34d39d2d3243c036f08474d95813c2e3aa1522fdb6623538f4c29ad. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZES51849203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765786db9548e379287e56b1c5ccfdbf0f7b73a2a2e58f29b78ec24f2ab383e8. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZES61870651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc667c5e986ab045c48f1d0c7cc19f9cc66a74c05d37620f7aef3eee15e93fe11. 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/QZHN91999331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83cf6e8a476bb9fafeaf0d29d469c5c27bbe3982c48cf6c3ed738f43b2d96ee. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZFYW2048455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01169ddd97f83275826fc38dc6f6a009b57b06fa9d7ee6ab2707490a272b0e9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMNS91920451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01169ddd97f83275826fc38dc6f6a009b57b06fa9d7ee6ab2707490a272b0e9. 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/QMNS91920451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810280d163e25d5c6de7a5da54dcf13601eadf11a42f24160e040f1a730203f2. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMNS92105598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810280d163e25d5c6de7a5da54dcf13601eadf11a42f24160e040f1a730203f2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QMNS92105598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb66e53ab30d95f8ad0fd94b962f989d36394e6565ba292d46e26e617504a184. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:23:58Z), 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/QZHNC2229236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73cfcf7a87c20d6ef18d5677564807ca7bedc1ccefb24ff0ea42eff973473b0. 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/QZMHL2278609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c4bf4b40070923081d3764fc6890fe497f185d9af7ce38c06e5c14c226f2af. 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/QZTAS2223074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c4bf4b40070923081d3764fc6890fe497f185d9af7ce38c06e5c14c226f2af. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTAS2223074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24662e7393ebac6fac1df57d885d717b97666dfc5edf4491ee0a2853106ff3c9. 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/QZHN42346145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250fb9545d0a5624e76b1de32ea34688fab7a9551c939e25380979c77510e1ad. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZTB32301727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b21fccaf4b414aa35bae78df08d1be23a6c82ddab54c4cbf0e2e62aef95003f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GX89G2408080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801dbdcf7a9aac84bfc4363766e5b672da1c40bf30b6c2846782afb133b4c406. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/GX8LE2467231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0f2df7b8deb366faa93f53fc464e4a84697981fccf26970475b3ece95ed6f5. 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/QZMEM2507978.