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 0xb21f2931ca5559abfd48fe34f61bb8da172802b00b04a8277700c7be82a45224. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/03f3a7ad-2e33-4a2a-b25a-1485208f8078.json and https://artists.proofprofile.net/proofs/artist/03f3a7ad-2e33-4a2a-b25a-1485208f8078.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 0x50972c14d73310c429df904667c6a754ca224569ddd663cb231c85ca83963d34. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/TCAHN2341831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bec441a7e0f22202e454de591f24300e28d41289f582e8120c260cc628a946b. 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/TCAHX2464601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721fd4e6b7100cff1aae85413deedc727589236e1bdfb519db567a852e9628b9. 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/TCAHX2464939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50972c14d73310c429df904667c6a754ca224569ddd663cb231c85ca83963d34. 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/TCAHN2341831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f213104e93638b6591d795699abc67cb72e9cff751711852a3565f1199e07b7. 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/FR9W12251751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c229f799473074022bd9558fea48f9d5afc4f76dfc4c7ca7365d986e749470. 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/TCAGQ2289284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5538e514f0f97eaa682c6f8666f14bc4cf6497f1526eb310bd6b63ecd752c242. 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/TCAHN2357923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2cadbb842a83811c72e3c15f23eb23c5c409a9ae42029e62b9f45a7f43a3ec. 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/FR8Y72100438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424ec62d7460eab92d625eca8d3b311f700cc288ea73db6e4f7341c6da92543a. 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/FR8Y72100362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b5b937e74dc13edd987885b08c16befe63b69191e418ef7ebad051540b2882. 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/FR8Y72100439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223a8204291e67abd21f9dfa6e86bdf7db45464aefe41cf33a7942bcfb5f8fbb. 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/FR8Y72100441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7427fa8b8a2de5169cb6f5f827f276712f7275ba21eb68e7cfd290b6560b8fa9. 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/FR8Y72100443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f62ebefe087c803bffc45b2d132072bc5c29a6b6a70295a99235260aa5c86c3. 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/FR8Y72100442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafba0838424f9d0011fad29daf59e5b70b6e3254441dc4562a91e0e1750563e1. 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/FR8Y72100445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bf11aa4b5fd9cfafb37334343264d04598506ba11706065df5f13b91b928cf. 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/FR9W12129568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b449337541da4c3bb920afdc916e608179437c4bd6db7f4b6eafe801051825c. 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/FR8Y72100449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20a53a5521a25c0f0cdd7ac50393294e36c171fcb9b11e07bd3bfa128d08a47. 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/FR8Y72100450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b8a7af0081c3242bcb8ea2b357a3d01fd307021859eac48469dabd7697f760. 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/FR8Y72100446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3448081b6b6e3add72e7a39681b51c2f1458a90055bd93a0dda67f343a0f5af1. 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/FR8Y72100454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c52aa92c3b9a5faa648f54bcf8892313bf62ae727804ac1a74e20d77460d7b. 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/FR8Y72100455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f386ff00192d613e69efe1330e990a9114e4f858d94bb5abb538f76689016e. 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/FR8Y72100502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a864c9730890f7ec430b755827477b2241b9faf806a5ed1ebb711140375bc04. 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/FRX452196835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6200f5755e400904ec2113e353ca2dec317d922d5a5f66eb9688d5718c7e2b. 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/FRX452196837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050ff98a98f270ee26c0aa6c35033e3a2f0dc557e03b6467685465edbb28bdf8. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/FRX452196839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022fd7fed0fd511015acfbda377f1c4831bfbc67b677865b2280fab94c02581d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRX452196841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16aaa883c0f0fcb3db9686eda0dda138ed064f6575de6c835e35929399ed6c5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRX452196843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210c68f7c047f762d66dc58d247ef4b1fd461ad560cc8b1e45ab3f30b662b85a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRX282145528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702e42ed0e8f31220b98cfc86b7fbb197caef141144c69f7d3afb7f5be0438a6. 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/FRX452196844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44724f0045161ddf8e056c6a729a3d8d8d056017a81c7b4ad7a436fa72e73aaf. 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/FRX452196845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9c88e4fecdace928627a8a55db00ed8b08ca84ebb07f9e8b3f9189bb20a5d6. 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/FRX452196846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0a50b1713d0af6242dfe340b241671e450c95e34459bd1da6026ecddb9fb47. 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/FRX282197074.