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 0xe1685649e78c477f2da4d304b813522672e999dd13112508e788892a5bca6874. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e979712-50c9-4001-9c84-b89e294e2bc6.json and https://artists.proofprofile.net/proofs/artist/8e979712-50c9-4001-9c84-b89e294e2bc6.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 0xb85e90af1162d212b4857c62650ab0d0bf6220d1ffa71654d53d22b83f80dadd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US23A1549887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13d1288f6963da65b7ee170ca2d01bd8d2b69c866e6eb9bd0ed5dadcc27f4b4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US23A1549889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30fa8c5d7fe796245cf6c4a710a726297ac128520ccb5dac26f8e757ba20750. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZA12L2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9e13bb5ee35fa30de261b92e2207e8562cec0295427f7efed8007cbc37eae4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US23A1582327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b9fc8ec07420f1602e15778bb8a29d0f8dbe6caef418121f6a928bf4cbec8e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US23A1582328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d16d30bb3f47cd9e9ea977270adddf770594a51bfc620a9e9014b4cd256da2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US23A1576571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e08446c785ab809d643f59345490fb176d131b395511ca529d6629c9a887ce2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US23A1582329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc495a3a01c10b0eeea27de5ecb487be1538d2ada5462c6bbab7d6ba4a6bd81a8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US23A1582330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24c80495a8baf101545ca3049cc86877aa7eba7fe57bb09a7687c239d614d99. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US23A1582331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe5267055c08e1d8845d6009429fcd15539eaf79e8824fc35fa5b465143959e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US23A1581262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74516cc6a2087fc1ca13a3184c70a2cbdd4b41c9d29b039f418988de86afc600. 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/US23A1582332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41ce88a2cbcb86e4288102032e580fc9c5dfc4ef1ea21b44fe3072583a695c2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US23A1573353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3979079fcd2ccba9f9b79de94d0df7b5bfa6ffc9887f026e46bdb684f8f694. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US23A1582333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c28b7176c172cd9445aed35250daa3afb1f8b5afa19c00dbf62ddf0f5d82a0. 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/US23A1582334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ac97b8cec1f66229be3f3632ec07f196ef7d4a172651daec1effb6af6d3d1b. 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/US23A1582335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ed37cf9db56a89d2e81f80f9d29a3f1ec09c7fae5f703c079c3a0dab666a3c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US23A1580668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa830e0d1ffaeec74a70896a4c7a8ae873f47af8e92320b5c2bccc9275d34bf0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAIP2439574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2652285bd0ca6efe081c867c5b0ef671ee9437892b40b117a35601231309faad. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAIR2439670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c89e05d5f989c3c3969447056388a1550b7fc3e1d958fa596ea7d30cf945b17. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCAIP2439683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b62eda3ed0760bd59b3279d54db2d3879b11766c03cf746a649ed2edf2c7b7. 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/TCAIN2457672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56bbebecfde61378e92d999eb99e9e899b7f6827cad3e2bf302334a5cba31ed8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAIP2439842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41db5d86bde9cf6b8e39151353370122a2b349384b9b56659820c339a3a83ce7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCAIP2439930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb94f1d422ca3b1b241d7410132a3ffabdcbf262a502cec2a427f08c17957d0. 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/TCAIP2439953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b0d26407a346473a6cb1c3591612c0130457e7ea7d3a1512598be1f5e8ece3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAIP2439980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a13d66ed881360f4585e0a6e74b1eecc4670242a15968f515b7ddafb2d77584. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAIQ2439999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d7c9c72aee10c4ac3927ffd1c0b751ca1ed0d4bb681483a3d979d33123077b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCAIQ2440020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d1f259271e4ffc31bf09f38c210322ed6a79eb30644705bf1cb9e2ddfa7e5d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAIQ2440025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1094dc24c850862abed4104611b417efff7c8abd739f3cc0ea305382cd8c5b89. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKEZZ1700039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f400420c62cf01282d06bfc748b46806727378b36ebd22f0dc8040f5f4beb19. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKEZZ1700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6142a9afa56657ce9e4db3471489a4e884063c3929da53de7c24e1dbd5984f0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/UKEZZ1700049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160dac7df7bc425ea353daedf5d442e2eb74dadd96dae91317e2943ab68dace2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKEZZ1700035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1094dc24c850862abed4104611b417efff7c8abd739f3cc0ea305382cd8c5b89. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/UKEZZ1700039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c90cac11a485c0b9693321efab691798c025bcbfa1e8cb50725b7a1bed876ee. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/UKEZZ1700041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08e9a86ea1aa8b3c52b359bcf76fdfb508a4883a98491e6cd13745e6067ebf2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKEZZ1700042.