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 0x5ddfd92605501e2a24a70ef316bd680b4b404a35bc2222bc026cd60e85aa74a6. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2bb4f6b-6d68-4a66-bb7a-0479b02dff07.json and https://artists.proofprofile.net/proofs/artist/f2bb4f6b-6d68-4a66-bb7a-0479b02dff07.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 0x7153ad257f1e9a5f33755cf4f2134479e30497a25adba9b9b8e25de4f6498e17. 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/CA5KR1536668.
Fire In The Dark ft. LØ - Pola & Bryson Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd875319b4aeee8658b2c4c1e849f5a6c88c33cebaea3ca5a2f51f5ec4de763a7. 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/CA5KR1536671.
Closer Than Close - Francois & Louis Benton Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ad38c12f608cda119f7130e7ef9af426b53a221715bc62e4926de6088928e2. 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/GBDLM1800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa2659cfc80febc043ce4877fd3ae822b6c5d889da6730ea217baa5e6b5dcdc. 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/GBDLM1800025.
Show Me - Jamie Duggan & Booda Throwback Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967e883cbe29fb9bdcfd23614dad4e568ccc86e05eaf67774e1f12ef243d0a12. 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/GBDLM1700334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b3752b81fcfdbfd450e7c01f54473c3ec2afe6aff570c01ebd2c21c2b9b784. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBDLM1700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca77a17c3b2e1ca1d7638d5278c584cab3b9ee815e8c83219cce6dab428cb25f. 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/CA5KR1526893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9988f93f1352bd8dcfb0e3acaae604dd481e3c5b797c235cbcfb51a310da3e. 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/GBDLM1800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00833813b4559c039edadaa78d18f394c7e25ea841341d8cfc1950910716b9c. 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/GBDLM1700368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b576669bccf33c99937612a031d76373e9749997ff3447f19b48d554ef21246. 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/GBDLM1800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955a54a8d3cbf9cca01f404d50397666ceaf16f7b35c52d54b9ef8b67054ec25. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GBDLM1700109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911c2376c5cb54d33b2fe77ae575cad3b36253802d28c9262d308ea308986ce1. 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/GBDLM1700290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cc528c5d63133733075a62bebd3205d3daab64ab0853ad320ca1ee3d77e745. Chain 2 (Bitcoin): anchored in block 960230 (2026-07-30T08:32:18Z), 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/GBDLM1600152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84258530e324daf53f36259c1bf5dc7358ad555ed1f60a417ee6c9cd3895bf6a. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/GBDLM1700038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bfba8fba23c69a2229ebde54ee81a6a62d46422d831a6eb5a534b0c99d00fe. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GBDLM1700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd875319b4aeee8658b2c4c1e849f5a6c88c33cebaea3ca5a2f51f5ec4de763a7. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/CA5KR1536671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed9e34075bebe9718d217ff8380587e041b1b746998a4a8ee46b840a2ffdd0a. 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/GBENT1637049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41a79d6295c7e14ae8ffa5632b49729e42dfe08eb45e9424f93ee2eed9651ce. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/GB2LD1800921.