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 0x893c3d5d45a3f1f0a733c090bcc2d8b13098e34ad65e0f4f013f4dbd9ef0ae4a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c97fd2d8-3fad-4f58-ae5d-c284b0655f7b.json and https://artists.proofprofile.net/proofs/artist/c97fd2d8-3fad-4f58-ae5d-c284b0655f7b.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 0x22a4ca87a23f10c4f8a0d148ab687616dd5400d4bea3d32642b1cf6ef99952f1. 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/GBSMU4596221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7433a59311bd4f0db5d635d7b7db386371b03a1396f5368dede0e72d48640b. 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/GBSMU4652775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3183b7e30ebf819e23f5b85b1e246e5debdc5f234c122cee0f60542640904607. 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/GBSMU4698253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb242b8c84b3c8705d9f17c940a0ace73e6e8ec6609dff2715565601619ae00d. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:03:46Z), 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/GBSMU4794574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c40add0bc26b1d171aa56ccec468163133928578781cc1ddf2cae6a7cf55f4. 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/GBSMU4930527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3114ecc5cd912965372e12ac2e4809e73a292f05298d9d1f1661b6bd74ddd81a. 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/GBSMU5006355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a3719118efc2dfea721bdfd22a75afad74069e3def084bdd16785bb7cc2104. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZB4J1809454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf831bae176064524e2a41803ba8446d12be92514ccfe2cb9e5d01c4d8b81ac6e. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:46:53Z), 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/QMPKX1852834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186004e43dfea6e3c7dc3757afcf7118d8c1ed3c295c7eb18adf363818b67938. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T05:01:03Z), 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/QMPKX1852835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb808211b47520f9fd7cd4174e42e8e3b8c4f4bde366d7bc2f80593df98fd059e. 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/QMPKX1852838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d0a5a712d14be2f1b671e408d774911759cc8be38796083bd67d0c55981813. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:24:35Z), 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/QMPKX1852839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e3bbb62257e9572cf61d23850d6159343ea97b9a4d3286ff7552405438654b. 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/QMPKX1852840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ddddb1c6130dc3499e3e7b9b26685fe2e79f7b6c01ca8574987733205e458f. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QMPKX1852845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301e669bfcd7c278fc310cc19e42902993cdf1c36c232bb5ce5bb276253724f3. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZES61813935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463454f6dc75212d776d161e20552c59fddeb47bfc0caa74de08b4089d7bb17c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZES51972138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ac8ea99b6b5410154f96109bf8575cfc96f0142b1e11235f0386bb1cf60b8d. 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/QZES51972139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9a86c284277eaf07c6627922cfb774bed4f00e128344f8b90972292ea5362b. 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/QZES51972140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3769036ee778820842d769faf299cf4924be732cb56c920367fbb4abe9f4d5c. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:46:37Z), 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/QZHN51930570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf350f9ab912164d21561eb14adbcacd93c1a91677ecd31d861aea86ec9dbd4b2. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:09:45Z), 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/QZK6Q1965866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6638e2f70fe01d6afbbb2ade8fffb0c22288cb3acc821db52f8304d569da761e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:36:15Z), 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/QZK6Q1965867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef684109a322c2454cacb6c7515fecb956a21fdd69f64cdf35c34e4b51907b61. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/QZDA72033386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e9f5766089613369319c266fa1bbe642463e70fe29e197b2150b0e9c64a312. 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/QZMHN2070096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd676c26ceef03f548501ce0c9de9fb099c8dd92b498fa3d4c46ec4f6d1fec38e. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZFYZ2114805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869d5f67d07b127050c25d89a0d3353a5adf5b1a4558542018903b21dbefa56d. 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/QZMHP2021311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899acff2f3bb3c0bad3cd9a9042ee98bce8e7a265a677c63ec85aa4871da2fb3. 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/QZRP42127235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaaa0ad9f81525c74d29b13a0bf82e9a894776a2b35f638b1b42c7dcbe8b9e40. 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/QZRP42127236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d3cca065ff47570bd698a73d8ed8f4f3979fd1d09bed018f09a7058d8e3b77. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZRP42127237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ebd308b1b5988fcecde28e573e24eae42b73d2af080930cd94f38a8900afd9. 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/QZRP42127239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d685d78b3f9fe626b808cf622dfb06cccd02c92521aaea2140cf0ce04dde94. 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/QZRP42127240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343648840c5cc0d943b410550540110e1f9ea75f7bb5552538ad2fe4468131e9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZRP42127242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398caa3fa285bb028f60f4b6bf8f0ee4162381c7cfa8c5127c4bccdfaaa6880d. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:39:27Z), 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/DGA052254584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee45b29728b666dfe18657bcfe1454cd429703414bca2911df9a2f69cd5dac9. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/FR2X42356046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65c2cc432c60a7bcdce56a87c8fbf55a241d39a3045f936850f2054f4d73493. 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/DGA0P2319199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb833237ba105b0af9d4671ba073b482d3f143a84171113c68b3e384980400835. 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/FRX452427769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e86885533d25a5bb4b687158d243d1c92082411af7e94e2505631acbfd47fa. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DGA052539366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0911ce61f631615af67849366f0a2994e23b87b562c94126e9538e97dd6d10. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM42K1801809.