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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a0bc97f945546f19ecea707a56bf52c96696a429c964417a9dae6c172d81b8. 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/701bd9d8-7420-4a2f-bbb0-c109c6e26384.json and https://artists.proofprofile.net/proofs/artist/701bd9d8-7420-4a2f-bbb0-c109c6e26384.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8857d77a6d5c2c23533599bd9545b3591caa5d39d0efd16d227437be684db35a. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/USHM91070002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978ad39d1a2e0aa3fba6d8f08eae2eff7c47daba2eb156b45923673523415c43. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/US4CL1510001.
Mystery Babylon (feat. Madd T-Ray) [E.N Young of Tribal Seeds]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869ec8bba54f064131fdabd49e650b5bbb5e4da005d31bf1a5470b1bf029d346. 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/US4CL1510002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24426c6ee27571bd3ac6423b4623b690faa9397be58cc701b700dde6ac09395. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/US4CL1510005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1d797511e616c2d3eeb7c84677620504d5cb59435f61d6fb66ee85d60bce9b. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/US4CL1510006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67aa75f7333caea93ffc1dd8533a4c941753ffa76a40d9c82c8aaef246aaa36. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCACP1670939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6506028c867c3ac26bccabfdac3c915bcfa57317ce2cbdc2614b0a6fbb7b065. 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/TCACP1670940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e55cb94e00e409c5a34dc697122998351e6390fb6da7d8ede094a6b1d505d3. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TCACP1671089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970c5c7c84f1ff62cbdd1a4bd5657a324f302d423dd3dd723201760a56f1dc66. 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/TCACP1671090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a9d1830db45b88209b66c2d9386f74dec58ab943a3cf73247f6744bb1a29a4. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TCACP1685370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227e8908fce1cc5f89c6b493c5b063cbf1ce856cd02c9ddee9e53e12af425bf1. 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/TCACP1685372.
Flowers Boom (Instrumental) [feat. Khris Royal]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cabd59059f7f4e32d0117aea4cafa00df18ef0db848583b09330fffb0b7f54. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/TCACP1685374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe579502c6f828b6ac4d404b5f505d5ced5d202799ec11188641a5b252f33dbf9. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TCACP1685375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be57842b2ac64624e50ddde9e631fb26349f2e6ff38dcbed3318c39e1451a7e. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/US4CL1710066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738f92091bb0434f80a931acb9e16b353bf446affb63d628ce4659d720fc56d5. 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/USLZJ2123026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738f92091bb0434f80a931acb9e16b353bf446affb63d628ce4659d720fc56d5. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USLZJ2123026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c1d90306c5b5bc1fa4c8fabf4396c52121cb2c5be1cbeaf72351e02467e648. 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/USQY51786256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab024241af9db4d3970195cbdd0fbaad74404b993deea4fb330ef889af34ced7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USCGJ1458533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adf0e75689b2e92fa405d1b0d1d08865fb0e73a1e770281d6099bf6fb364538. 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/USLZJ1907766.
The Las Vegas Hempfest Presents: The Smokers Album
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3be8aecfb5c201eb8223f225d79161bd8e6bc7f9f304b88c8cfb1c5cae4bb5e. 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/USASN1402567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409a087bb611140f27c2ed1b6a8aff52561eb4c279ce7f6dee38da761378133d. 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/ES6081141210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5d5b9c4c09def3b881336495815d15876ec20b3a6f52c3a7424a157ed800a2. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/USVPR1200177.