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 0xd502945029e8930c194a7358a255518090d5f11ed219ef28c7ef6d0ea26522cf. 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/98562b31-c8c3-4438-904b-af86d0f7bb91.json and https://artists.proofprofile.net/proofs/artist/98562b31-c8c3-4438-904b-af86d0f7bb91.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 0x5b4da06fb3189b497dc83fb27105ecdd9d78d546bdd5d6fbcf77f0b834eeec5d. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/USHTV1200231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5add48c6880ce7d4feef058bb3dde1383e85286d7d6df3019d2e9b1c13145e24. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:05Z), 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/USHTV1200232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddca06be678bb4953ab5a7bf6c29889e7c1e83152f54c6fab2134f2c4191b5c. 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/USHTV1200233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7f58256ef6fd47c8b758c2a34210120efd16622ee5f4f25c01c0631fa3e97b. 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/USHTV1200234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbdc3b59f38d15a951e4e5530034ff8f326f3eeff4b0b3f9b50ae9499d64952. 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/USHTV1200235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba779873f98f691f5e0a15ffc04e08bac9368cb48c4888a20b392353c8f1b597. 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/USHTV1200237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaec7ca97ab4706f2978c677706022b344168405d5640f0ff4431b0d05a17d0b. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USHTV1200238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0ba335eed1fb284cf6e9cf45f0b982ac0ec74a3bf77435f05b2e2ec5bee07e. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:27:17Z), 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/USHTV1200239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38854ce23877a725bdf16c57837d57b23a03b272f53de91e0c85d75d41d63ca5. 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/USHTV1200240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcb4bfba78d2d848b07ac0f360f03b88a37297f24b944896a582cbd180a32f2. 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/USHTV0810047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79f738d090b8403409961dfde2b745f00e3cf41b1bf5c23bd3323a3facdf894. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/USHTV0810049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcefd4a5d9821cc937f5a017125445ffbc8f45edbfbc3d1d0664f3c8291f448a. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:26:47Z), 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/USHTV0810050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87bc4a9a0839f556f8e7d7f3f08d68fa6b9daa6e4baf81009d60700d467e5b1. 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/USHTV0810051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3748660a8aa3c9f62199856f126fea99b876ea2fa4c18853d6e522d3b35a4c1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USHTV0810052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e660915476077339158d06e3b36e858b8df1c22af983ac4e49b0287724910e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USHTV0810053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec60edb6c806ad28c6507e7d14f29c834296322898906cd0e57e20290eb8a41. 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/USHTV0810054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987db9f3d54edf4906898326b1b2aa0872ad37cb5c78b41dc1cffd854e83e635. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/USHTV0810055.
Cold World, Strength for a Reason - Split 7" EP
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e8a95f532a459815bb364db28a9e96032a2060977b49f73d4a45eb0ae4f382. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:55:55Z), 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/QMFMG1437555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efe5c7bfb7e2cba7fdc51b9ba187432f7e74a36983d53618159f8d398223823. 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/QMFMG1437556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0047462c5ad398cf223d0b33cacd6b848704220e057fa3fd24068f4011ce12d1. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QMFMG1437558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12833f05d5b33f3d3f6382e742c280a1046e870db933591d0305a3323be649a. 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/QMFMG1437559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539aa843594f34552569d70da63384c6762829b7e3f49996ec5e369a124891f2. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QMFMG1437560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d80c0cdb7206693461afcf1d67443b1eb78490581c6ee790c892e30ca154f92. 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/QMFMG1437562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb031efeacab92410a55d596af8f3c8f721a220a415120d142d308325c0521c. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:38:26Z), 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/QMFMG1437563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2410a59a7ffdb0911f6181e1b61a49ab5de0b276a8a705da6655c0cacdf90233. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QMFMG1437564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20840f518d821b00376b83d9296d6015a19e94e79adeb329f6e81a3d356a191b. 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/QMFMG1437565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f5f1e66bf2b1ae7520c1fed16cfd97c499cc0b6ed3d3a9c80e17d93695082b. 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/QMFMG1437566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9083db2db45973cbc39bb76ba2dbaf3f391bf78eda862662f79075617415fea6. 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/USB4U0400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef57b1a9033ea3424d08994506b24d62e79307b5a7c9c1b296bb63d0875f1c0. 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/TCAHW2409985.