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 0x7cd1503385509ff1fedf0f77866a82e29602b8fa7d52119814150d60c7edb740. 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/8735d1ed-bc4b-4661-81a8-aa60d9283726.json and https://artists.proofprofile.net/proofs/artist/8735d1ed-bc4b-4661-81a8-aa60d9283726.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 0xa438503953b42e01428f71b74a878a27372f1a74ccc4de6f911b9d0a18d2e392. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/TCAEY2049725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d70b8c75331e3adbbefd99e625ee2457298d822708cdc1e6e2cc6d2cee8d85d. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/TCAGK2229458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf482b6a4ac1e1eafffc7683eb28b241dcf9e9bcb2f2de422495c1a7881c242. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TCAGK2229468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29f98c009bec32e6ca17047b233a8947e87b3d80f8cb30d540544dd6c784892. 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/TCAGK2229482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f65741521c45569b28b710154d548154ceb7b3784e63adacf53b9dc25d5ed91. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAGK2229493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7645e428327e6c46aabbbea41485d7c723c64399303727029eaeccc71a0e5652. 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/TCAGK2229506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5009f1e63e7cd0863e0aafb2748f33c2687572458ebaebfb0fb7fdeaf4fb2dd3. 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/TCAGK2229509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cacc1f4d37265e42dd3d53aba07e2ec90f76b04faeb06ee1ce697f5b70070fc. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TCAGK2229521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92a4544c4e7b146e2b426daed27dc4fbaad7b5c5eab6fb7dbe5c6eec0826f1b. 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/TCAGK2229532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc8f18b64bda2ed38e25316876157c4c0cd2feb02f116291d057e155b98af5e. 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/TCAGK2229557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174d5abadb9341d98088f2f5d4e1f78169a9972fa6b5a70520a8c0492af14317. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/TCAGK2229601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f7b9aa6f9ad92cdbf5a3c82b3a55038de5d92c8e3b497c54ff6a07d0e83412. 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/DEH742405310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3febb73a7e9e6ef583171eda07f73d9d4a527cc2124e623e3481c11f1842af. 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/DEH742405311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc905960953ba6830e61e9cf9fb68675638696fb4740c7b827d5f131d4a9ccb. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DEH742405312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee73cb4153bae9c8bd218cfaaf860e6d4887e9615e9707527f6bf92a4ec20e8. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/DEH742405313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a1938336a537d952a2ca0411a4c21737136f3ff8298093ed7c179e41026803. 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/DEH742405314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa213a0635050be0135739cc3f32b085ac9106dc99cd1a5a99f32135987a432a8. 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/DEH742405315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9e4df270652fb0a12a49a6217818d69979f764dad01e24ba43b54165b0e85c. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/DEH742405316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1d6e0f5b1d4a2555950adac7bad4cd18dd5eebe812e6bc8d1af866396a72b8. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEH742405317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8656f9057ba96dcfa8e63c72ea68b06f099add3a9da74030e948859130a077. 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/DEH742405318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfba335bc6fa03b8d2a71c3c9c61171046e5a2b68cd44a0f6176e52871755220. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/DEH742502388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b82165b815e836d5ec944a19eb5de71d321cb7e56ad48652fb25f21528acec. 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/DEH742502389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894b875f75b5e7cc91e718f129ed1a44640078dfbee70c15f1bdc68850fff362. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/DEH742502390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee60fa5eadc4a8df9cc75e9be6dc882ecc42264ce2e43e8272636453454626bd. 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/ZAC012500357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa5b2fcdf4f7ac4f831d0f5c0a662e12b8e5efed52b206ed214c6ac9a70a966. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/ZAC012500358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefec3704c8e1751cf72ac1b89836375ae084558c4505d5d85391b1676f02567f. 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/ZAC012500359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64598265de96f6c5462af51f35a2a8f9b5ad046a0ac7f73679fd4479e919c670. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/ZAC012500360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfd19d354277a98cc2a102cce0e6b06e5b7ee74579b4f87864464229722080b. 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/ZB88P2400422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6619989cbc38e139d38a131c67826663732d00e6c972489582141c35787c7a0. 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/ZA9ED1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55527a27cca9ce5ee136f68b9cc32bf86e78d32fb22b00081daab046665bcf8. 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/ZAM142400111.
Ultimate House League Volume 1 by Dustinho & Mghanas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058ac8e1183577682dbd0797bbff45f05e452eaafa645791e0402fbf1a8e9e48. 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/QZMEM2290823.