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 0x739badf86aad5359e3d2ce41e99a64d5c4017b5a1db302879e521816d9a89bf7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96bfa0eb-4231-4374-ad8b-8e768c8b524e.json and https://artists.proofprofile.net/proofs/artist/96bfa0eb-4231-4374-ad8b-8e768c8b524e.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 0xfaee782a7faf8e004bda6f30db38c9ece77368219441b30a0f35e7eca6f3a931. 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/BKHYR2400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672bdc8b98083ebf924e940e5279afa8baee976b7f574b60700cc2a1646a3e1c. 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/QZMHK2392358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259fbcfc869a86735827352d5643ef44c4742ebd8897991de16f2b2eb6d048ff. 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/TCAHJ2306124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca84649225ad4e85b77b88574b8308061840a29d461f3ab90006691faa64680c. 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/ZZ99E2400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8592cb3825c2afbe329bbd2ecd39c8170f0a6627dc1abd6be5882255a4308d02. 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/QZS632412920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02c5ee797af245d7dd8d738b60f87fa0ff4910745c357bea673de2cca121063. 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/QZGLM2439582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf8a5f592c7ca441bd9b0f06f99b190701df13461d9b22e69cc14562a4ce790. 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/BKBLS2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08de7e5705e966de5eb2c9eb4ac4421463ed6e286fef66719553bfb73d4bf738. 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/BKBLS2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b4826638377b4df69777b76c8f9fccadc0af55ce18a7abb665155f1fac2f44. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BKBLS2300005.
Tu Tava Na Revoada vs Tranquilo E Favorável
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8d2d51f4787e3da3a87d3ca7e6f2a2fddf87201488c14550e5abc9f28e82fa. 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/TCAHE2396760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f59c02fc55d9c3003ae884e000890f84556908f2864e2b6a198da1e3998484d. 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/TCAGZ2306845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba33d379f83f77926760173f28f6e20ccd172a92c670e60edb06876c03d5bb89. 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/BCA6L2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9ad64827292ad03f43f9e16eed98c44980f06a21b0a9c68ccefc305903db88. 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/TCAGO2248055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6f206ccf165711db1b5a9ced8cd6ae551f1d144d9f9799d86f94cb0b538517. 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/BCA6L2200182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0abd56e715aadb9d9fd5e116fa9c8f191d6d902a7b0d73d69b800d4f7c3d25. 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/TCAGG2204946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef9f0418e6817cc4e087087009297451c7f3f22a78bc9e6a13a55422eea985d. 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/TCAGD2241292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e17d0082505a8f852a88683cd7cd78c47285495d7767d0c0672f4c953455d8. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T17:15:05Z), 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/QZMHP2394983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47529a5c4039c60c96d814e97a27de2ad45dff1efc17711e399e64f98a9c8aa7. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BKBLS2400045.
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