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 0x6248c0cf4d3780f00891fa9d32cb2999298237632193099a17984317ffce45d7. 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/5424664d-afc5-44d6-ba1b-d712f9a98b8a.json and https://artists.proofprofile.net/proofs/artist/5424664d-afc5-44d6-ba1b-d712f9a98b8a.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 0x08fc8a2f775ff5f2890982b4661dcaa33f52eb68387386d12768c6890231eef7. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZHN32397798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae3c30ad0ff46ab02cbbd61a4fcdeedc6685e6d55ae1d91f8c44a76855ea735. 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/QZHN42388335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a61d80d93aacc910eaba775cc570a786527665d5544d544ae9e955703486e58. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZHN42388336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165c8ab58dbcedeb4abaa7ade3edfe77ea9c84fc9f8735beed72fda19a895833. 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/QZHN42388337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ef43c235b59adebdb4b5e0686a498c3a3941bedc6e78f818931afdf2a75c02. 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/QZHN42388341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfde4d4f138513b35aa2c9ea8fc608b12d0e9ff06b84f0b5ef948ac98a7d31e1. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZHN42389714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b42704fa5e9ddd251a3468c8a809332d31ca2cd4e4131e048f5310b8aae2dff. 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/QZHN42389715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bfd406352b10a150d3c207073461d48a311e070775d2265bda0f722a2dcd99. 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/QZHN42389716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe844bd81b59345392eab47726f066588532672eb893310f73050cff45a7d412a. 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/QZHN42389718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57330c039d52a8addf04e0efa768aef5ff3c5c59a16e89ab8c9be960d7b64d3c. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZHN42389720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b13e7ba4f1f77e03bc984f340a96f0609580e7e3a6395b67dbf35f170562470. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHN42389723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d0b22c7c783388dbead78894745865dc346bd230193abe43ee5ae2623578fc. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHN42353320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817d777e2d78de335ad1d424a3ba3a5d84d36f40d8e5cd94298cebd6378df752. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:59:46Z), 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/QZHN42353321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0071d5102ad2330b34dd66abcdf237b87e2104997af8c838d23e2e347f3a793. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:00:50Z), 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/QZHN42353322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77d04e0a3b64d0162d08eb133c213e282f247fa6480f8aa28fcb27abb3c03cd. 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/QZHN42353326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3d1330cdf22d8599d864e02e24ddaaf253838f3e32e197a9c05313b0eed278. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:15:26Z), 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/QZHN42353327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461307db4fa5bf64830f1974968525ad32937780fbecde62175f68ae8a0253d0. 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/QZHN42353328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd504f0a4ecae0d9123dda2d2f0959ed008241bb0e8e032a265462f81221d2a79. 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/QZHN52390302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e524eb59c35e914260fc1e8beb80158278af96884bf0b7620adb62e59051669. 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/QZHN52390303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a5f921aeee6e8d59a69b8126c8d5f4e1c74c9f5fdeb0abe9f7f9b8fcc5e9c9. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QZHN52390304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b694c1b5face8d38291ac2973d8567ed86554240d45395c4e9ea9435fcabdc. 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/QZHN52390308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bb290048c8c061336be64f0eda54defc4c5f9767e7c79b2b334473c041db5c. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZHN52390310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4c9bf20c6981d57cf9e2684ee701c3ec911a2868c2c023858b7665118a7bfb. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZHN52363323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9182032da467cbd107353616597605714032c78e7d8eaced3dfddcf791ddf972. 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/QZHN52363331.