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 0x6781b7ebb51c10a367912d32ce6ad566158731b6b58dbc63812a915569583028. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea12d859-edc4-4ccb-99af-93a19d85a7cc.json and https://artists.proofprofile.net/proofs/artist/ea12d859-edc4-4ccb-99af-93a19d85a7cc.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 0xadc6f57061e8d3839ff7ee4c63f9556615c43fe73ac0b13be00d91a88247b16a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BC6LR2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7897f14fb2e2d30a32429d623624435798d6299c57c4903624a76adf579b241a. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/BC6LR2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc6f57061e8d3839ff7ee4c63f9556615c43fe73ac0b13be00d91a88247b16a. 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/BC6LR2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0853ae819e4737cedf7b26b74cab59f7c9b3325216006ea23ba923f21d14a4f. 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/BC6LR2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a616ac14d05d46c326314e22ea946871a4a2ce7be0c14094da27469157d2a6f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BXT152300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bd76a5b2b4ebfebb4ed31f93e40da7f203af7654f10eb79698ea41fe959156. 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/BX52E2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a20e13f26384252e13ebf8320edb0dd0a8ddbd1c42d6c7757b69205eca9a728. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:39:22Z), 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/BXT152300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89deb2a92ae11ffa85697e04ebe48a5ad5c5345f1f896ba0421b3c42d3432c82. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BXT152300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d65528baae0894012f1970b2375232506cab4a8aec9db24fcc358a4ca189098. 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/BXT152500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdf88c13cc304e419cfdd40280cee1375b9047ee13bdb0c23a6dbbed90e64ad. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:54:13Z), 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/BXT152500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04b273b8df334bed78506415f6113c2ebb91cf597df6380b3b5774634409120. 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/BXT152500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed5b97cfdeb103797c6ff6853d416db3313ba118a3a973889335559fdc69a53. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/BXT152500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0faf1e548b59df1020f43fe4572bddaaeee352ce29b1e5d9cc6d71175c4a10. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/BXT152500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3716a699674d130b12f0710d506fc3b15a5ec17e35c2f2e1240dfebbaf6e08. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:54:48Z), 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/BXT152500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8856d4429501b25c0bea4a23dc40a03ba2b4a2bda4a5949156ac194eedadeb2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:56:10Z), 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/BXT152500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314ff7280c17962741462c4141943ed642807cac85c24a37db5441152aaf34e4. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/BXT152500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9004ebccfc02e68209c09c978d207db361d241004238f74ba0096824da6cbaa5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BXT152500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5f226d41a7438dd1f585479c4b3661981000436bebb327e341aa8568a99c9b. 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/BXT152500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e003352682f58997a44a40339c99d0e996b42a940252ab19ab7031ffb838b9. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/BXXIP2100002.