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 0x1cd4c58cd762eb3193757a8a2cb4a1d1e88f4500f63fabb632aa3176aa878078. 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/9b2ee213-8a10-4455-97b4-5cc6a17683f4.json and https://artists.proofprofile.net/proofs/artist/9b2ee213-8a10-4455-97b4-5cc6a17683f4.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 0x853a16af3ea41534c9588138e3fbd7fd9eb6240366aa2406685ae6d147433ff0. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/QMDA61837684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be9d3f778c78d16b7a4abbda3058f77917979916d5377036a22863b5ba1162e. 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/QM6N21987217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467c08e705bc0e7cd9b4261083e0a91c799424d01310fd2428d064ac2f27155f. 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/QMBZ91911633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ab58aa6ac50d37dabe680dec5ea9ad6cb2f7581e1f373f5cc654ef0ab7dd02. 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/QMBZ91911634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa565ae713354b7dae043d1d8786ad95c5adefc046ba2637c65e98559ea59a29f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMBZ91911635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ff28f1de321c68ff60e423b31c0fee4f91f4b640294d55e2ed7b5427abdc36. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMBZ91911638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bd29a452738ae7608add401c02da2be844db37ef461ecdeaaf7a0dcfbdf5c2. 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/QMBZ91911640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3d3d4ded4afe7653d462857a81a0b6dcc08d340b4db5f698e1c9b00a4eba49. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:21:49Z), 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/QMBZ91911639.
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 0x7c4568879629440b33d0bf27bef2d444f9df1450b678052f9adb1915815d4a26. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QMBZ91911637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7e662ac2c88438dac3bb757066df4d052795b02d4176485b6287788a2bec34. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QMBZ91911641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccea84be6d09d152c27191d783435e57e96566a6f10d78d6a4da227d2fe87eaf. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/QMBZ91911642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ce91d89d9b97d0f2cf25a4db4d91f401ae747cb547c54d262b792e488350de. 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/US3DF2115012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623ac3a5ab65e7892f1e1f74fc972267f7c51b36286cc75c563b6ae74baf7e45. 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/US3DF2115021.
En Vivo Desde las Oficinas de Hyphy Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11435ea0e8f8125522fb426bd5a0b532e7d64fe412e11d1bbc8a16410039b10c. 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/QM6N21878255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e54fbf3c2e0c31767723b8a51ef50b478e3635f93c5ea444fb927ee609fdf6a. 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/QM6N21878260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109a5dfaf480ac22f6f5a1e58d3996d96fd2ad25a7b7e029bbc33659a1addc93. 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/QM6N21878267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3074d23eebe8a176c747907da3ec358f3177ad064e6946c4be69550c5f7af979. 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/US3DF2115009.
En Vivo Desde Culiacan Con Banda los Populares del Llano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508d4dd8e6827f2dcd95368a2f5e563e293ccada3c572da13151d0de064d2471. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/QM6P41821650.