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 0x581f1aa8b6814a8f798bc1d17a9b986d435e4518fc3807b79b48308ea210bd3f. 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/08583e7e-3dc5-4f52-95c1-20d1ded6621c.json and https://artists.proofprofile.net/proofs/artist/08583e7e-3dc5-4f52-95c1-20d1ded6621c.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 0x1a193922767112cbb1e3eeba788b071746f746dfefe593454aebbef3f3c84093. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:41:31Z), 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/QZTB42265528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1b8216f72791c2c56a4d07b2480fd8080291a39d171ec6a3c1785aa5f20c0e. 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/QZTB42265529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54b17912bb998b35132c3d7bc2aa95a6bd7f1aa3de828f495b3002a91baf10d. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZTB42265544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362c993833cfffa2eca10b0d4aa0045e62ee7a32d0ddc2a67f012a637c6880a7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTB42265545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24c4071b17cf8be21e7b889389085b332c7df47ed85791dff4a2bd7e630f009. 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/QZTB42265546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50957e6a75ebaf92544015751d095a5651ac8ef8f030e069d84752f8473d3aff. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:56:18Z), 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/QZTB42265547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc10436427b79c627c6047c68dd5ce00801991b9170b3a2261b2d917241f3dc. 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/QZTB42265548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb910a04b58ed14b82211dc014f9749c1e7098a72f4f844faaa0e9428969c3b0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:04:04Z), 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/QZTB42298554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006eec391bb80699cb9fad849b9b6658cc503b05b8ac06bac92f236c43a1ba83. 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/QZTB42298555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483c41978199f7476883e60463accb340331ec8f61840bd315e02aa8ee3089da. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZTB42298556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8848b6a1a7767c1acd69397e51d23a54fd68928e199e2e4cf2335c02c0757699. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTB42298558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd05d190856cf76d5127b226d170ca6b59b3031ccefe189af777ab1c2f73aa1. 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/QZTB42298559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9d4b7d2bd5d2637fe142a9e66463eb0efb8a0f45f1abdbcb7371e71350f933. 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/QZTB42298560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf14c75aecad44035cbad2babc62590a2df6a0e112dbd2ec758e0b00b843552. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTB42298561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ffda71dbdd190d383908348b40aaf4185dff9223dd5e04da7b24a0c27797e2. 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/QZTB42267675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8221d88c9399d9f9a70d8564b723a445157411b50b807eabc767bff449d490. 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/QZTB42267677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d53ec57063b6dfb6cb7839b38b13521c38364b30d7a6149b1ba602e5bd2d90. 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/QZHN52327856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307e238dd7e483c728eea4c209e4047c8b38e5ebb95f24df32df9b35fb61f665. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHN52327857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bb34dc62d6708fba5be2a812362a3f6d48d6e6d997eaf01011ac3b0f4dca50. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:18:06Z), 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/QZHN52327858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdfd5c474e6a599722837b2ed66655019ba0eaeceee22968fcaf343220ca781. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZHN52327859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5480076a9e7f68321e3c7d18dc78ad7f8177335db60323969718da4c7413e30a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHN52327860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbceafe3cfe92f9b50b9476d1497229e8dad2873b1d96ceb3f3694c818cea28cc. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN52327862.