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 0xc7866f083df667410b713bcf9f31f71bc220515657fc670e274f8c6f7b3818e8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15612b6f-8b2d-4dc3-ba7f-e4145bea080c.json and https://artists.proofprofile.net/proofs/artist/15612b6f-8b2d-4dc3-ba7f-e4145bea080c.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 0x03940ab1c205b04dbc408edc9c66f394f43e6d14519e8c95fb53886024b9a7e5. 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/JPKS00602781.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bacdfc02b7c687fc54cbc59a33d489ac83a2917281a4130670aa1b72d00c7c. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:39:05Z), 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/JPKS00701301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eccdecc25744f35f650c7641bea85f32ca2f5e199bd6db799b03dbb74d21898. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPKS00701472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da769237e6871bce96e4ed6a17b0a334f74e83f1434e29ce0c000b54bdb6033. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPKS00900282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8380ec44dc6a454fd885f148ed5a3387df52ea8a44593b33e7f1dab4b1e1a8cf. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/JPKS00900402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc30f39a7e8a116e4e8f49dd4fc815e156956480652616756f59a44ba8cbe62. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/JPKS00900405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a9ffaee9ac70a4389507fbe64ffebb93fcf98a0a2277670c59c92170ec0463. 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/JPKS00900408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8dd93755f4d4f23cea5a688b2fb4c4694960f745788ec9b130546c8bc06f9d9. 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/JPKS01001621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e06ed53f28984cde6d1e02ffb7728976095147b1f74e4194d49285b99ea50a. 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/JPKS00700341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d9a977cd7948035ed5bb5decaae324d185b95682a9b782be8d05355d12559d. 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/JPKS00800741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc45ec142f20d82ea302ab76054eeda0e3c079620c0ebf06d827c1c7e240c0a. 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/JPKS00903086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab0ac8985a60ddfd0a634ae79003cbccfca0b15ea1a17ba74056026490dd6b0. 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/JPKS01001622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95da4277c7c8c539e31a06d7ed64f2ba7c5241640e8929393958943c36c19945. 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/JPKS01002527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8cde07d6f23fc86c3e7797879b3c5ad40292d2095ecd4470c63c333eb2eee1. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/JPKS01101501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58eab9919eb26341a6d1d4f89aafc7175b95b2f66e142dc6ec580978d6c83f0. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/JPKS01200501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff92bc5796238637cdf680eba6f137289fc71803ce69982a52f27ef04e6b92d. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/JPKS00800742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf314477272a57709e0e7d2cf543a99eeff15178d45d05a0ab5c9e1b2ef93e91. 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/JPKS01301777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4024095660bb315069d1c68a016c8b91257a489f358f8ec46b54e96979f7eac2. 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/JPKS01202102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7c4872ebaed932b6c9cd8e1c719950c7f3ddae1f047ed3af9f136d2da82eb0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:12:00Z), 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/JPU901400614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f40bfa5a54fddc85eb0cc091622af0110396140eaab0cab5b90295ca9985ab. 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/JPU901400615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d52f3932bedf748525b45145957142eb86d5b9343f956678677a999af8b095f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPU901400619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6aed6d7bde4e4e92c906a309a5adbcfb838ac8dcae87f0efb6ae51b2dec03f. 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/JPU901400623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716ec224b42079314d673c9a74eb99911e7937caedd8b78f242c7c5ef7f9b805. 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/JPU901503042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6460f2a9e62298979327ed4f4dcaa11305fec75deaa812790352fca677c918. 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/JPU901503613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef4da31c9aa5232c3a0252740af7a261033ae1e12438cf638af6516613dea32. 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/JPU901600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e07300a6b9d76f14abac9e71211ed112c659de8f8a41ae590ddaa0bc54fb7f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPU901600883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491a721b2a2a1272081b3e07404a5c589aef736c6deaa03c0cc956b67a954ef1. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/JPU901600884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64ca8a9af5ed4832202ec67c10e03f43ab05afcd1b2563bd0d17bab1655fb68. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/JPU901600886.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e06ed53f28984cde6d1e02ffb7728976095147b1f74e4194d49285b99ea50a. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/JPKS00700341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d9a977cd7948035ed5bb5decaae324d185b95682a9b782be8d05355d12559d. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JPKS00800741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236eb5c36689ea089246f3e5e5ef86122b5222f1911af9ee7b7849c04284bffa. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/JPKS01000301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea32c48e8251553bf56d27f89cb8e85b95e809a3d7eec1e7ff757ce9f571ea5d. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/JPKS01000302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4d46078fab7164523ae96a61ee512ef35e47b5a74bbee26a5a133016334cd2. 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/JPU901802181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9601a58e9352fffeb241b21db02bcf98ce82ed0fd8e4547377f397c589d1225f. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QM4TW2258539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f751a4d00b4c7bb5a6fc9a7ac6a13d952024eab30d3f2940f1f606ac6df1e9c. 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/QM6MZ2220715.