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 0xe50cb1fb5069c4c5433edc615fd5f0dcea17f329f05cb7be123c89526b93490d. 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/1b13d44a-658f-4d6c-8c5d-ade7fe9425e3.json and https://artists.proofprofile.net/proofs/artist/1b13d44a-658f-4d6c-8c5d-ade7fe9425e3.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 0x9ba19a5bad17589bf04bd67b375c2a2188ca87c151799e4d71965d7d6441f092. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/USUYG1549795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7ac81fde19d7082a3611d30bd6a73f41b0f30481ebb86eacc310904187bfc6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USUYG1553145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88130581eeb3f8c1da819fa5415ce3987e68a4af24bca7af27f343e45a29355. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USUYG1559577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be0518b36b0bbdf9a793505d2597c9ab8e35a5bc73f341c1df1939539a9cbff. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:57:33Z), 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/USUYG1564761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa240d6fb433416f7e2be1a0211bbcd9dc63495f9addf1b726e0a2dd52873ddd7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USUYG1573737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c974b703b76cce9e9bfb67bd32be638ab0eee3d4aec5795ceeb0b54117ca55. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USUYG1583765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba19a5bad17589bf04bd67b375c2a2188ca87c151799e4d71965d7d6441f092. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:35:18Z), 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/USUYG1549795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9385a3a1d54a383c796b5e3ac8e0ff4b2e2996d0c933fa8e79b41eefaef71f9a. 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/USUYG1583771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6ca33e792b0cfc7ed10e1f991513283393033b1ab81dbf97779ca3071c8b54. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/USUYG1583773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7664798bbf32bebea059e9a19214642f748c1c9c6a552f8c12aa37a12807a4a. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:40:13Z), 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/USUYG1583774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f4ec5df4253deec826e3a300afc640080f3fca293f1df1104082037d1d1cde. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USUYG1561659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb309c62021d29fc18fec67f3aa8ab37efd0b797c97eaba2112bf442f43b4fb2e. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/USUYG1583781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1a46c28d722421a52afd7033182079cae905999e1bc179249dbf89c9940604. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:37:45Z), 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/USUYG1583783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58dba0029de3de6bde61937e51d71795a7725f81609d5dfb674295c97050ebb8. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/USUYG1583785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820f4b3b83ee434276e02818e61a1488a2a96b0921f415b77d17460b2552f9be. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USUYG1577314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd34b98dbcc1ee7b733a5cdda48e2cad514d3fa5515c78c32dc58113319d8ec. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/USUYG1583787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eac1356003e79ebc8ac7803696356d49ba811a6fb07245becd10ea098d775b6. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USUYG1583788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0c5f9da37919ec5b5889fb4c96f6d67e630ae50402a7caf797baf4356f5b94. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USUYG1599681.
The Hood Doktor: Tryna Heal the Streets (Deluxe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0f73464c5dbe9af1aac27b63ac55af28724b2c89b226fa51fedd046e221366. 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/USUYG1554769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c8abe855216474c3621db9d7f3970ae3dce7317b6322b932e873a7f9b71ee9. 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/USUYG1483311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08953a81411d339fe3e386ad26d139b2264a3de77fcf8b71703aa0b3d2035f39. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USUYG1537389.
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