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 0xf33a6bba3fe706bf9c6560d4d30e5636195260adff55474b274ccaee5b595d20. 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/68db5dae-04f2-4d80-bc93-8466b544db8c.json and https://artists.proofprofile.net/proofs/artist/68db5dae-04f2-4d80-bc93-8466b544db8c.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 0x20b92860190a1b0c82aaa8e29546330363a0fb71dbdfd1b4d9e2c1c406eb83dc. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/USUYG1148160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c76b3fafbfb3e8507d8d7b409c4344b437ff18f64703a21d93a14270932bcb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USUYG1148161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda6f07bcf231f29a05b1c82bababa3dc4645690e10afe870a01ff339c7927bc. 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/USUYG1148162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef985878a90e3cbea49b5c63a3b6e803f73a16c94d1c9d1e580b183e4c0bfcc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USUYG1148163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8b33c23b09c09407c78ddf48e926b2f417bf13efffa2f9e6e4938e81aa1104. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USUYG1148172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bcbc46a9de55358982ff3e973497116cf130c04384d9220dde57209baafdff8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USUYG1148177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05afa1ad5720da77bf9bd25f5655871ef0d8362e78acdb9913dfaf7f60406ebc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USUYG1148178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89581826af1eeda81e947e134ac2f7dd8b1a910bd11fa2251f11fe0f7226109. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USUYG1148166.
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 0x87d27067b80bd66a038af9a247d5c377c84c404fb8b5679ccff65b1479e9d7d3. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USUYG1148171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada77fe0f91e3728400c55036dfc83a59405b65fdbed9df82a80754421e6609d. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USUYG1148173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ef087abadbfece67df0a6bb102d5232eb7e3034648a6c86672a178970e2fea. Chain 2 (Bitcoin): anchored in block 960430 (2026-07-31T16:09:41Z), 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/USUYG1148174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8f7ae43c2e9c1fe94b62bbd262b52c0cc0f9b5f6f83e1a83146d4098696e1c. 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/USUYG1148175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb4cb586167e6331dfd6bfda1b0fece97817ab928b9d9317642ee5389fcc115. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/USUYG1153026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705d7c2d5b6ec9da363be5edb33a69148903508d929b0997251240847426ec04. 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/USUYG1198763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729a6a0ea09e9a2962ed65d163f67d7642d8c996dd8b28231c434b78374ddfd9. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:04:40Z), 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/USUYG1198769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85cec532cc521649ee97c909b92e51afa2fc254e7dd5dfa1afb4a32a5a88a7e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USUYG1198887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b3f6bde399f725041f69afed5c32e1604fbd36c8f321cd8812061a3e7b07d7. 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/USUYG1324972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333ab997ff714414fac53e79a5194fc9f53a44edc2df9574ef615ae919ebac60. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USLD91769603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e50c634893f51b71357c83d803a11c5dc765a6f852b1d894fbf9c8c0abe3194. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:09:12Z), 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/USLD91769604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9623d6cb6bcf7b575469abd0e79e6bde104fc7ef346520ae3ce48c39d5f57e15. 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/QZTAZ2514539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc0a8d1f62ed9b9f1daafeb7469a2389d76dcdb3f0ab676f0b3277bd3d09f4e. 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/UYA522100011.
Truth Season: The United Streets of America
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22ed7579250be9b5fce5771b4296a475c7ed2000d474b2da197ba957f1f6170. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USUYG1407619.
Hell Cat (feat. Casanova, Snap Dogg & Liifestyle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af85ec2f5e3b47e6a72e33a9af08597ba37a7762175e49d667110bd19abe849. 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/QZ5FN1874966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c3b719c6dacc37b920d005c2702d6fa4a3398234d6eaabe48508354625dd84. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QMRSZ2100055.