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 0x5b762d4b2fd939bdc18d9c95f38f69cc068e3ba4679a3c92e5ba6ae2d05a4299. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/241bb7a6-103a-406b-8367-1c31006d5cd8.json and https://artists.proofprofile.net/proofs/artist/241bb7a6-103a-406b-8367-1c31006d5cd8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
FREE O.G. (feat. Hanybal, Krime, Schubi AKpella & AJÉ)
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 0xba271675f415fa38ecc9bcbb80c6079b162d769b3713ca004c92f71cf00b1292. 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/DEE862000480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a2a46698c7fb03f3dd81fdef7ede20de9f215bf6e137837a0191b16a9e1574. 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/DEE862100629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb22deb50e97a7baed487005edd7f486266fe5a6548646917f6913cd837b217. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEE861904317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12d948c3238ff65c44b5e6a93bfe45079d50df3c55f07e4736db0dc86857a9c. 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/DEE862000670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba271675f415fa38ecc9bcbb80c6079b162d769b3713ca004c92f71cf00b1292. 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/DEE862000480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ca6860b4a38434de1864f536a348774af3a6c7762e10d85737376c5afaba01. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEE862100630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5eb6eab7fc7e5ff8f72c6e257989b5d80c8b89cd734e622aff53dcb9388d3d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEE862000953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80db93dba527228235222f63b87870b576f5ac2e42ffaae9700866b58843fabf. 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/DEE862001908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028d0935ddaea4fbfe491821b5b03e4db44101bbc0e158d6c9bd899854659296. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEE862000198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaff25671009f04c2a708ee39fb25f3c1157053a0a758e13a96ebc9fc1ac0697. 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/DEE862100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff913dfdd3d1c5b38c566dcb641234b744e392c4894c8e1cf22d8ecd7004ddb6. 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/DEE862001219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539d563a54332528057ac6a2a6ae98d2d3f6b7acfc8cff388f8dbf417dc3b89c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEE862002519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94023f03699ef11579da50b68436ee726ff36b342161cdc26974683ad8a31ab. 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/DEE862301258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a44d33dd550b78d35f50d942b4d833ce9dcade02963776d4545ac60b6add6b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEE862302284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9382df78dd67a42b5ccf6da33e66f8492a82fa1e75d95c659c25a492f5da9bd5. 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/DGA052302454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d549d096b664d7e79a2139f307a60b92120cd932b0e45e2b8242fa2e4db681. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEVY22300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d247d3dcc05d2ce1a7c6c7724623736537bc4025286c86f457c17dc80684453. 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/DEVY22100161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a7ec4120b144a7bcf05607685ddace502555551b62002558bc213e617f6ebb. 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/CH7812359889.