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 0xb616ba5d093d8be603421bc868e6e5870dba7760d7508a81848ed2871e01e4ff. 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/02729d58-9bdf-49ca-846d-58bbb4799faf.json and https://artists.proofprofile.net/proofs/artist/02729d58-9bdf-49ca-846d-58bbb4799faf.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 0x90014a1cf22e77ee0fb7981381f570aae2941e24c7dd158b06029fc7013e7840. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/AULI01177740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8299c8862cb6401eff87d9b85a44dff20704c6bb8ed0080ea75dc75a9fb7b9a. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/AULI01177770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65450a91e8d797d7ca1c8bdb9c6c9c590b8cdde4d049d745f58e09b51129296. 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/AULI00622260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65450a91e8d797d7ca1c8bdb9c6c9c590b8cdde4d049d745f58e09b51129296. 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/AULI00622260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf442eb99beb4fff21139e0a046792908c02485c1025a6723858018fbff168bd4. 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/AULI01178070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a89e805dcdb0ea43c8d5ee01465285374276891b0a2a697d07412b42c880d16. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/AULI01178110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70eef71a08f443c0fa2df2b63cfade8a59a41594bd3986834a09de49d51e2e88. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/AULI01178060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a89e805dcdb0ea43c8d5ee01465285374276891b0a2a697d07412b42c880d16. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/AULI01178110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5113bf36beb42ef75ee5e2a0052dd4dc6a2fec32cdcd8947193e73c068bd5be. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/AULI01178180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf823de3eafffe4aa217381198aeb681bf11e5350d582a4850ab910b848d02924. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/AULI00621260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb35ec4af834a90d57b4a595d893a94ee6f6d5a203af83d66ef5e856d2581b21. 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/AULI00621270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61df40a291c370d8e4b026410097c4dc7fe971fb5795d64a1f472654b002c27b. 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/AULI00621290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d8309cdf35f6297db14a9ff89e036150710eced887432bfdcbf82143223481. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/AULI00621310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83a907836a8c1c418a7b26e9bf9a1a43ca39b2015e0a42a10bb55a3717160b4. 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/AULI00621320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42e3c3d2493339627962415a583cf233f16434162300214ee495851d191ffee. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/AULI00621330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0962cd986c1c4d1f36b467eb52be39d9cf397b6c3f82bdf55514ea84e9fc89dd. 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/AULI00621340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcae8f7dd5b8164a5b0e50d390966772db6560d295dd61b172e801bdc741357a. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:36:38Z), 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/AULI00621370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407212e4b6290b2c9ed941a0532cccafe60a5850b102b82cc2cb60dde21d5eb5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:47:27Z), 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/AULI00621380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88f117ef2e0b34b3a82577c04b360936e4c647475702f9c354febed938aac69. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/AULI00621390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7b5616bd13d9f9ef0a0fa198353677178a3dc164266a0c1ab040f4d1b49c79. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/AULI00621400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf956b94ad8ac9f9afa48eaf033b2317a105f521a9a76b9ccb1fec275633c0ff6. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/AULI00621410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f63bcfa44721d2c94d2b1d84d707aefd4a7cbcaf20d433a6599515780c6902. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:11:38Z), 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/AULI00621430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42e3c3d2493339627962415a583cf233f16434162300214ee495851d191ffee. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/AULI00621330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837381ddebc5413687d5288d638740b0f79ba9effa9e223e1948835826996c45. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/AULI00621250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf823de3eafffe4aa217381198aeb681bf11e5350d582a4850ab910b848d02924. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/AULI00621260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb35ec4af834a90d57b4a595d893a94ee6f6d5a203af83d66ef5e856d2581b21. 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/AULI00621270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b922cb87fedf0f38f1f765f711deef843a244cbf3e278daad553be5fa242a1. 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/AULI00621350.