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 0x41bef4efda4d784a09a3222b394c8f42928ae776c69973f54fcd1280c4037f88. 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/39aaf575-3a64-464b-bd9e-ba551604d87b.json and https://artists.proofprofile.net/proofs/artist/39aaf575-3a64-464b-bd9e-ba551604d87b.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 0x8a37e6c6f3139282d3d7bcae1825fe4bf4dd0a84c6d6c99fb6edd75e8edff4d2. 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/DEPI82114465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924ae77cd32c10b002f688ab0bf497640e9b26b92ef1cb8a023a3f90a4376013. 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/DEPI82114466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3206b7b31a9e8c14f94bca52a02047c2b7c928f1e46681e813311f83af6247bc. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEPI82114467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62bf2e653ed33db21139552d5513681708f8d9404e821770062d3d11e00f897. 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/DEPI82114468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b96d9533918ad0c6c5a80a735026e3f4838d0068bf46f2622f7a09f92e90ef. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DEPI82114469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a069cb1d37931e82f1a09a1abe1c50451ccc025239cdce2d49190cc42696786. 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/DEPI82114470.
Global Underground #44: Amelie Lens - Antwerp (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c029a3510cfdda4d16d30d08170d3822db0a7cd05f87ce6e5df70d34f14efc6. 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/GBHFW2200066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23f4b7d5bf47b3a4e5eff74cfcf3c0519f00fa843a3503625c64ada295b3ea9. 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/FR96X2190667.
Global Underground #44: Amelie Lens - Antwerp (Unmixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63693ed7b61a8029f73cd69141cfb43c99084bec081dcee12b4ec6cc6468afbb. 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/GBHFW2200049.
4 Years of The Black Hole: Interdimensional Troopers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1deb54119bde5950ab2aa01ea1bb191c9a8fa9e7e62915859981e4ae9febba97. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/NLCK41081732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf360129fa176e00355a611febd886056f5d30ad8dd22b7062554197d8583715. 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/TCAEG1917021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9888b8c1e3cea7ee89b6b95c6cf843b9fb6c1d8a5f93c8928e2f6290ac4ff8. 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/QM4TW2211564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6760523c8f24f16af50e3be3df0317eb5ea87e5b5f647011db450c1641550db6. 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/QM4TW2211590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c9ec93deee5567a00538bec7d690dcba4efe6eeda9b6b341530e2886e1e8fe. 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/BEN582001133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc9eca1afdf2f250ca61bbbf95a1686b00958e4f34c0948bc43224f8cb0bdaf. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/GBEXH1900599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca79c6c49dca75969fd01a3927fed9ffbaba7720a6ffd0e4e6a67dd9cfadea47. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BEN582200236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c254772b1af52ca52d479b709258f9bc02b34c219aca727edf77ab4c8edf48. 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/BEN581900934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf695513070008c7f8ec6e2227b7e3efa5f73cfd421cd18119df89c2c010ab99a. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBEXH1900512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c055efa35fbc52678412d40eb7b9c2a8ae88a99c76202a24c94bd45c360682. 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/QM6N22409198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1288aecb9f99deb46e1fff78033c4c08290800ab33b74696bd5c7e4f006e02e7. 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/FR2X42158957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70e40bf396c032a6c4514a9f60d6335a0ba59c5dd8863a97f216c070bac07e8. 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/BEN582300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b01452ff0ae721050eb32722c155f44b89b100b9ce2351519ed8c20c34e8e37. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/FRDX62207520.