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 0xd27b49dac761e4fe90349a63c696c6b2f42df04c7a9fde634e200b0d755b6c1f. 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/24d50bb8-b980-43c0-ba26-cae22ce3a389.json and https://artists.proofprofile.net/proofs/artist/24d50bb8-b980-43c0-ba26-cae22ce3a389.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 0xa4f3b627f9b08969387de54fe85c85b47d08c86231d48b16df08e7cdab3de138. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:28:38Z), 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/RUA1D2295418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373aac1aae18570a05a7956df4b89979420974fbcda65a258b559bbe29a119bf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GB2LD2010041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b53239522ac03edb294dbbe8bb5c9a5be5aa4b599bb1e90186fd823bd3d2daf. 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/GB2LD1700411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af6f8d723d703702eeb06578b9fae071d0c416e970b5bc5fc909d92ababbe2f. 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/GB2LD0902548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16d728cc15a249a6fae5c34ac78d8a3d23675fe0f151443ce27fe12d2ebf00f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCACS1675537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7464a2a70bc2cd48bcad7b5ef679966a74363042bb20b8afc9e46ca15ff689. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCACR1639512.
Night Shines (feat. Nathan Brumley) [Disfigure Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcded2b8c9d35c4427cc366f9e5700cc05305a72fa348d3f9dd640a88edca54. 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/GB2LD0901837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf1a44d97c423546d5e70a71406ae4c151a5fd2d8a5e8901dbb81c596e7ceac. 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/GBSMU1694388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb15fc69747f093bbee76601cd7ac687057f23b8e36cdd658080e0e18361727a. 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/GBSMU1694406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf23d41f526f58ebd2482cc6bfb4278761193a9751da554de1dc5d28c71c78b8. 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/GBSMU1694410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a971943771483d04a174870e04f53ce7ed2c2d47e448c0e099210fa215c24b0. 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/GBSMU1694404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf498db8aef3674ca4b8cfdff156f43eb747202e0c266bccd2116473936ee2a1. 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/GBSMU1694386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559dd184482ee043724b8af38410e38c104cd1ac2f24a3acd26a4b2caaa56957. 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/GB2LD0901589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12270bb734c62e78ede76c65c369b536afcd9cbe58e1421eba41dc197b3cbac. 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/GB2LD0901580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12270bb734c62e78ede76c65c369b536afcd9cbe58e1421eba41dc197b3cbac. 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/GB2LD0901580.