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 0x9bf13a768f83d760f221e21d85bdab26ed766a87b4007a7bcf1b33af5a6204ce. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6fda15a-9fe0-4cfe-9fbc-206756ff4435.json and https://artists.proofprofile.net/proofs/artist/c6fda15a-9fe0-4cfe-9fbc-206756ff4435.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 0x13bfc22342e66317ecbeb7af9039277447c4ff5102ea78c14b3dbc113cf7a996. 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/QZZ7V2525761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518ebdf751dd735e9bbd52e6a089ff509017d056359bef6f0528a733925e44b9. 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/QZZ7V2525762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd6cbed56637602d5a62a6528f575dd2b1e6d040bc584b8624c56a77407746e. 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/QZZ7V2525763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0194d1a4f2c33678ab9f7f2b333e19f9a4e2a05d7d7db575e171c21103937dbe. 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/QZZ7V2525764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f83442cc35d887dc627d00f3e4d4a2642f4b0aa4c831299cd6565a150617ed. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZZ7V2525765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7f14c11c37181a23188941495672747bd210caa46bbd1d08eaa56735da9d2c. 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/QZZ7V2525766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5402279c238c4a04d0f1ffc96ccccafa0042eba82bd62a65acaf1c21a75969. 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/QZZ7V2525767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234729a5ca869117cc0d149149031edcea99febad798de5e4c52e072a3cc0394. 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/QZZ7V2525768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efdde7761418f4f61fa2e3f4274e4f01873227aec44013a8f1cf66def66fd82. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZZ7V2525769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75ea0a7bbe029de69372463e2ded2ce5226e2228a76b8d7b7319f1944a988db. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZZ7V2525770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260ddf8d283ed8e6ec10c167bc5a58e2cfcbd5688747ba4c089d49d566302259. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZZ7W2538314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76eeac3a007ebadf4376b850b266eed39e461b1151808a18decd6d2dbe285fac. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZZ7W2538315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc972634181e6da989d435894d9b7fc2597a76103cf4e580e5ac889a8e1ca85d4. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZZ7W2538316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90cab144459882a67794d698044760a18465cff01a61cd86bfec2c25147aaeb. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:12:11Z), 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/QZZ7W2538317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a462ef6cadaf1062131ac9236b0dff92d0b6e37609049b74827bec3635e99df. 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/QZZ7W2538318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d965a83938d7bce110037066a6d0bf58b6cc18146c8acea67b9770dcfc2178. 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/QZZ7W2538320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e84e87f2afac937f20b125d53cbf87b8782c1e6434eae1bb4ad25f360f250d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZZ7W2538321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb55a040d4bef0dc53d878ecde3f284512617ed2cbce40df86f71eebdc508a49. 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/QZZ7W2538322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415ab6d4244d485b587739a71c5e1dea0abf6648db2cfc291f37e5b1b2d08dd2. 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/QZZ7W2538323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08cbc1f0a36c9a4d2ab980e92a3abbc64a18f7df5a1f17eb585b0aa2f9f49343. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T23:02:33Z), 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/QT3EX2535500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4232583668f0ff5fc32e88dafc13cbb4aebad9195cc97fa7904673610e04293. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:07:15Z), 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/QT3EX2535501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a828cc3049e099c8200c91ed5e35b4f48c47ed3f48d11fe70cbe09d8b5d68a1. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QT3EX2535502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f4a64610fb72e80f2fb0913c561cbba478a6e3baac99017ca39ebce443c051. 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/QT3EX2535503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745687baeb6a3f2e3aa6dffc40daa911cd586d1537c903d679652aaca004de0b. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:10:15Z), 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/QT3EX2535504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8cfee466e879a788c20f1c9109739472785be558b94fa7a4346e999b0d30341. 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/QT3EX2535505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0112f49be5ec97b043371bd619859095ec518b64686b2414c142bbb4c0ddf548. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QT3EX2535506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8875adf0a8f77d4ed4b654e0b82e3c1cbdbae8635acdbf870a87f0efb75dd0c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QT3EX2535507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a61c9d057a14ca221518a22d6fce5b7750508236a3a2d6873fcb4f35c20081. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QT3EX2535508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87014a85255b40426ea37736c65db8efb9eab2197f5c5e7cccff8163ed3b3d51. 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/QT3EX2535509.