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 0x32f03ed77ba613354189b89d1714692436aaeb7b9e24e6afb889acb43babc27b. 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/63695cbf-152a-47f7-80ba-ec4cefa9bb90.json and https://artists.proofprofile.net/proofs/artist/63695cbf-152a-47f7-80ba-ec4cefa9bb90.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 0xc81ef443b5101d9b735d7e0f1cf1e8c57cea41d51bb88f5765d72b5a360d46c8. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:09:12Z), 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/QZHNB2071620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b16cb6700970fc7179c938aa76748fbcaecdf11b7c93a300c54079bfaff3b7. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZK6K2082785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85b0cdef6c74dced28ac9791345132ffbc6d20c84cb6d00dad981e4f1aa5489. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZK6K2082786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2b6c01345e60336d764ce00b204262b10b59971d7fb16cdc46427d7a0b2261. 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/QZK6K2082788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d788acf3416ded82a940d89e5aeeff223f9f3e89747f3c373054c3f3816c000. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZHN32196420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce1844ae254c1b289a74c17fcff5400c07b99868ed6d078bab3176b7a71b062. 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/QZHN92186520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d77fdf206888f8f4b273293b765e74aec327079b6d14cfeab7e8af4a5b14b6a. 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/QZK6H2152513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7e8acd435cf7b71911e740413ab5ee9b5379afd90a182b4ee18057d9d5ab38. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZNWY2184927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48f304f83c0764af016d0a593c66617a46dc96651848e8f0883e7ce1d06c4d6. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZPLS2140272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba254bbca2ef2d98d517f42dd9b7a7ae8c114af50ff1779031ac1dfef2c2d13. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:18:38Z), 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/QZES82269780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736121dbb7dd7630c63bc7a90bd7b2e1e86386df57f6b513d21a854f45f02ba7. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZK6Q2224013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb11bfbb42d0f98e0779c7747f431df72bac310950e160083e59f3304b65efda. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:59:40Z), 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/QZK6G2278023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28e64a8907db496aa94ddb5c3f08f512a810f8bef74e24fbeeeb523649c225f. 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/QZTAZ2206899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687468703a5894ce0e83dc76f9a88f9039854ca596a7cff60df1d56daf8ad461. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:36:26Z), 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/QZDA82360359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe54c3bb993309b475844aeaa23c43085184223b90c0079c2f3ae45cb46cb01. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZES62357254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75fc2b65fec6e7921fd9068732f40f9f5fd0558e975a4a00e325f8a28561714. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:39:18Z), 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/QZTAY2392094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813a20c8a01ebee84f6a2514aa48b1e0167dec03f0c587fed23833bbe73fa88a. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZZ792485123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbb0a40087499a84b09f416548794bc33d60a00a7a1636f8c2472a4197b3165. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZMEM2532533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5222e50fce21c204486a42ed06f36a130e950e6dc5083042976739fe1d7fe59. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZMEN2555687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94a6acd02abd3c04b5479cf0f40bbde6ea29e1258396af233eb62765b85dbec. 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/TCAHP2395500.