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 0xc1f9e93639b1fd36338346649bff16bd2a02393b7cf53ae6850b4de82e34aec8. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6543a248-34f6-4148-aa01-e2035b1196ff.json and https://artists.proofprofile.net/proofs/artist/6543a248-34f6-4148-aa01-e2035b1196ff.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 0x790962afa147618c4788e503c2e090f507cba6cf76666b4c2e41b25994e16871. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEBE72400346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705019879362961c4b9193ca513328b4d55b4713694338de6ba46b60dd338604. 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/DEBE72400477.
There's a Way - andhim Remix - Mixed - July 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a60bb26220f2e5f14915faab0e07a42396b3d4c6496bd2be9dce9df56eda10. 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/DEBE72400478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe38f8da6a0a5863b6545a60b949b7770ef600175755b98834b59868daf78842. 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/DEBE72400480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943285975de967b850478d94f320fbb2416567bef1e98c337bde4ac871220b6f. 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/DEBE72400481.
I'm Everything - Chemical Surf Remix - Mixed - July 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b909b7b7085e78ce7d2409a0518d3e6ab383547bc39a91980fbbe32560d912. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEBE72400484.
Gcwanini - Samantha Loveridge Remix - Mixed - July 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e39d68b7084463fc9d00c0c4a43222946903ce567c78d1b8433d513fcd5a903. 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/DEBE72400485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809c8bc6ed7ef7e16770a31f6513713b7f46f85200833b71b145bed4ef3c3f13. 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/DEBE72400486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5925d01a40727ed8b14652a25e56cc38329d4270dc47997978d734805d5a047. 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/DEBE72400487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe485765502c0acd0fbbe99bc5ccb7bf50baa6f19d4ef2c787710f093c6293d2f. 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/IL4612400155.
Dusty Shades (feat. Paul Brenning) - Extended
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6cb670b19c3864c1a56186dbae9bbccea57e70a424217825247bc3870d98f5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US38Y2505190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ad92aa98691ad38b8efb719cbcab3df0e142362d66a06c1161f5243f147084. 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/DEBE72300167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4158aba98629d1f1bfa0c1f4f0e7caa14ae33242ef829f1aed30ed33a78efd3. 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/DEBE72200743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b27c7abbdb088e24ab9c1926d42d6ac88f14f15cb9130dd23b608c20e816a0. 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/DEBE72500087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edead9846ef646da470083e7ae097890d222590ba670f4dc555a7dcb881036a. 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/ES94G1710001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdddcc9e1120e0b71d677407bcc2257c32249f27aed58274f09ac9bc862e11deb. 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/DEBE72400766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2375e6627f6684e1008a3bb7b36025351a3dbffbee0cd4e769596a5d5250eae9. 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/DEBE72400404.
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