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 0xe7e78a18ef1aacf7530db0d4a1767c9daf82779e9b5d676eb1171fbf73723eaa. 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/be42c009-cdfd-4dfa-be8e-8592ecb9d50e.json and https://artists.proofprofile.net/proofs/artist/be42c009-cdfd-4dfa-be8e-8592ecb9d50e.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 0x22d4c389372b8ecfde249e92876505e517e459e97b767d187eb1cd32624a9895. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/CA6AG2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4db1a80f761425b1bb798c4f75601552e1a97eeafaa85fec4fa0b6e5592b0fe. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/NLF712401154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab58ae339316e34efb19f929ff2f4180a1f7a8e413fc735e74c143c810566d2. 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/GBEWA2400372.
Memories - Jesse Mac Cormack Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8ec44974ee1e1d0b0aec40f3e82a4a2d88fcc22af2bf73696fad68cdc172fa. 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/GBEWA2400373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e3a39f6b9e0e6b0f7cbf25689d9c4399f571451acc683f06c4387ac83a2402. 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/GBEWA2302853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fa46fb09a9d996d49cd83aa7984e479f7a42c72f7fddbc951fe58da18ec0d3. 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/GBEWA2101341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705a0b5a3b1482f02e354b68bd5ca7639453cc00a3d9e266fde2fc5d0d5a613b. 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/GBEWA2103190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf176d478e29e20337c2b2cb6c95be0628834579c8150df1d50b8d26fb8018e. 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/GBEWA2103192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f89978abcd36740b673ccba259d3fed71912f2ed1aa85b9d7e64e0f48a891cf. 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/GBEWA1905560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f89978abcd36740b673ccba259d3fed71912f2ed1aa85b9d7e64e0f48a891cf. 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/GBEWA1905560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2f92b6cb839cee8e0f2754ff470d637b32e49b66d667b87caecd47eccc7555. 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/DEVF11800488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadae56f80385f3dd718d41fb59a8757dcd9a479bd23376cfcd69552f1ce769f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEVF11800408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadae56f80385f3dd718d41fb59a8757dcd9a479bd23376cfcd69552f1ce769f. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/DEVF11800408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dad39600404c273cd1ff13601dd24c537e445858e93bdb5c2faad90a52b4c75. 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/CAZ842300051.