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 0x684a236ddc2a355c0ec70f20c00cf1e56a37c34a6c258f61b169c9cbd978acd5. 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/097b5647-1457-4289-8838-e2b810d2b6c1.json and https://artists.proofprofile.net/proofs/artist/097b5647-1457-4289-8838-e2b810d2b6c1.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 0xca82f1206f979448b20388421776a34f150cb923cba47ee857dc11881f73baa1. 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/USCGJ2384222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90128ce506bb5541e7fbde9ac2ff7d5f2f8ab3332d0a7e95b7ee1eeb2a21da27. 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/USHM22222314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ca232478bbce52b8b99e84bdd7ae164a85ce8cf34be922dab4447b2a8e4a7d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USHM22214977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d64833e097d8b731c1f465bac0b6698ba105f174b52dfc294cff0f66db8c264. 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/USHM22215416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a665a708e45c9c09b02af39e06d1b87b79fd93ab09288f1debb65d4b7538107. 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/USCGH2334927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46328902cf97d91cfc461ebc73d223e4445738a0de8fb96425d6b8f22c303454. 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/USCGJ2228471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe797f25f1e56db0cfec8f6bc8bc00d543047c375c187463f4e63c6302f01d3b0. 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/USL4Q2162428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e7b2ae4ba96566426645e6940467e3ee293297d3f473e9170b280a9659c5c6. 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/USL4Q2162430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280b8f07bf382606cc5b1b8a30fb8cbcd86f4fe4e6e3dde0d658f2b059238424. 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/TCAFF2096715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201de55478609a09cd2085815fce987d6b560ea119e22fe72c32fa4dcd5ebc9a. 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/TCAFF2096526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08128d10fcd93ae7068fe62a4794da0cf7eb21c4048281100d1b27817247939. 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/TCAFF2096364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148b514925126f03584a244549b346f3b96c0b4e55d11c9705baa565afc0b2ea. 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/TCAFF2096567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc902adf58774cae8ed6bb0e2f3b85b2f9a0de60ca4412b49cfcb3c287552d1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAFA2032056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb0fa7d2b89255fdf08d70caea66b99d02d80e6a34a8f06075bb449ee42fb2a. 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/TCAEX2098936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc580bfcd37bf3af3968f819ac84a90f8e1a282fc767b742160e00c2d37e0d7d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAEX2012996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e687b0e243a127844f420f70a7cecbf2a55cc9728e9a690776a1471b9625997. 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/TCAES2068028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5271860247ec9e23fa740e5bd98ff37967b28c1da3bf531d096508eeb6895d4. 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/TCAEO1979072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa0d530aed66a3b6ff75c6b223c1f533dde4bf8495134557bb871c60e98dae0. 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/TCAEM1969510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2d57dbf991d721a88d94cd8520ca6cad41ee632964abdc32b6316ea006b26e. 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/TCAEK1944622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20a4decdd8e8e08d0835082638a8d7a7eff96542e9207ec5dbd816b9a3da6f4. 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/TCAEH1997798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb36942ed2e42dc0c63581f04db6f3909b329da57410d834a1e4e41bcff75290. 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/TCAEF1976830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f2d352d8b006359960b1e0455092dcf857eb87ee51b8d0a0af288b461b6680. 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/TCAEF1976570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5405d8e91865821d250b9ee495ca3ce9891d64bcbf1a3a5fd062de1bf770e8a6. 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/TCAEF1976801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fea281400c2229e98bfe089a5b3bf6bc85d1c2687c20b733cd4141473bdb5b8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:59:29Z), 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/TCAEF1976618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985eed53fbcacd94ab1fa28e02ecbb9b95d27a4116958c2aea3b3e4d3d9a11f5. 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/TCAEF1972026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d04d9e61685855c08bca76a48b82760e95d85604f8256ebd54732bef3f0fd88. 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/TCAEF1953011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe704b74cea7e693911dfb3f05477415b93d01db62e636e17d53ea07c0060993d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAEF1948574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f6ac3e5e88f11d9374e7b19f2a6bc3f967343fb8d5445c2a69cf9d117abc0d. 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/TCAEF1948748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f829f4860ad13729401c2715bad81ca72d9323a3b638d06b27830f33929cf70. 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/TCAEF1925173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5d2ab46607abf08dc6ed52081357b3b0655e2f0f3598942595c002e7cd9336. 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/TCAEF1927879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4c0dbfb973d6f0409cbe737f8325988abb52ef43a4e5e728abd63593e91559. 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/TCAEF1927915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ce233d49160b394f1fb2d87700bdfb420e79f395590c359b7f00f8a47dde04. 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/TCAEF1927737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fbb0b053cda0322e7659f647cfe08dddc66af0c0e38fd33ccb268e46ba59b1. 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/TCAEF1905873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf60bdef3b1a47a75873d4109936e717734ce7dc7b19d7b9f9d20abb4c03995a. 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/TCAEF1905884.