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 0xdc8064e05abb819d0772f5c8e13e6309cc3730935fd4ae12f7288cc4d5265c20. 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/7871a0c6-2510-47c4-b311-dedc2dc1685a.json and https://artists.proofprofile.net/proofs/artist/7871a0c6-2510-47c4-b311-dedc2dc1685a.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 0x20cb5166f24c3fce3b27eaebacde2788065a9b6fca6ec427c8aecfafc3b7e92c. 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/QM4TW1757353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cb40ccb43cf5ad1ba645357d8dab5d7798e1535cf33b8f3d04180f70bf4a94. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USLFZ0710032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a5683ccbc49acd4061313a3020d6eefd1134d9f1c070646918b1c6f59f7058. 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/USLFZ0710034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328f7467a5fe4079bc4ec8745c2a3d7d3085cac268882c0815fc4572ecec8ac4. 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/USLFZ0910030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7123a1f581fe93fb7974c1b7a092983443d1e83919d39958b721b80647ac65dd. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:18:42Z), 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/USLFZ0910034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4dedfda2d4354dd9091caf9684913d85f6ffe632c814ec497c9f60e08c0e07b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCAAY1134490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b61df69977b0bd33f7ff4d5f369ad834efc423332c236fff20aa683fb98ed6. 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/TCAAY1134494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca65c8e33c022ad84d8b364a24aa09fc1e9095047eb4f69b4550eb527087c791. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCAAY1134495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aca5673ae9011cd0cdb8c43c3f9f0c3c5d2ba2c5fd4c5ab13fdec99bb71eec4. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/TCAAY1134496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5d009de802c85b87d22707c570748d2783c6d70abf351964c45a63e66f9137. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:45:39Z), 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/TCAAY1134498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e50ecdf27d1cc4e42ce165574dc7cc8d5f304c484d0bdc1c0e7a598bcfa3092. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/TCACU1674581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5a802930d924bf43ba7b7716114510eab29f8b540d621fc861849108a0578a. 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/TCADQ1818025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6e9b5a7af5e9aca6e0e7020e7ce3c623e5c09b9fcdeb451abf70dd111a3f18. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:21:18Z), 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/TCADQ1818028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1286becfdedcaec52b24c7b7cf212d9148120f70a9dfa45ea3f5f4c9cd20c231. 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/QZDQH2005063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa4d8445fa6bfb350196ce6fd10acb57eb3d56533953354c0b3eb7734788c82. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:03:07Z), 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/QZDQH2005067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4496ece40f00ad97fdfd9708a82f4c14bccf50fe0c63134ddd53620b8d19fc9. 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/TCAFQ2155384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd710e6d2e91d4000084586eafaf80b2ac52dc412f86d4b25242ae99a47226f. 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/TCAFQ2155391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa649e089e08ff76c102e4778cf5479d0004bb064c851154f6aa4e53299328aee. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAFQ2155413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8035e4eebd075deb614dad514ad6472b0325f9ecb5f298326a86775ec12219e. 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/TCAFQ2155446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c6d4644aacaf7c2d1d7657ab322e13c97796c8f57f7dbdbd60a30eac5744b4. 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/QM6N22289002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9e573a38e9c0f8db668472e33c06008e5e34ebbd25ddff31b20b6931f7db52. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAIZ2443758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91003c02267ef1c2c411cb38370b5cf0de3b4abe2a83511382ae311018f79025. 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/TCAJH2517483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17903c477cc6ea9d2c46ea8a60fd21c03623fe7431609142e8a982439d468fca. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/TCAJR2575376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2004f266423b79dc83b0e54b6d3bd52a49c9cd0e017c164c1fadc1febec9bd5b. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TCAJR2575393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0efc2a089d0bcc507504fe51a27b754a0a3e99c561111c8fd630c23a25f67da. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAJR2575400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c6b4975c32ebe053b6be6880064d890d7e503a7564fb225198efffac56c3fb. 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/TCAJR2575410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa72fbb3638cde2ec102e92c2e219f0d3f8c8250ad7ee0a7edc3f3c899970913. 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/TCAJR2575420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f846c4d25b7e37459b5a9cac7185aebda0b9f7cbad316cfe310efb84ce2655. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCAJR2575428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ccf9b7b527f890a31397f6c31db380b15ceac085f8ed43fa15979ec0c5084ac. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAJR2575441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061cec4aa7ed95ae369ddeaa6fa510d9170992f2b5ab5f65342c8b305ba6935b. 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/TCAJS2575452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cb9e6462b360d1a4585a76fc14f2172d63df2b658d1c0da044155559241c08. 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/TCAJS2575469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf6a42266d913569c5bc46ad170183f00c7e917997c52ac34745a58a0e0b25c. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/TCAJR2575483.