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 0x108bb9ec9ccf1de857b5a7e8ade3bad11fecc94d53521af614b146f399ecec21. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d3cc1163-5c93-43af-9097-a052be0ede56.json and https://artists.proofprofile.net/proofs/artist/d3cc1163-5c93-43af-9097-a052be0ede56.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 0x9ccc2c748e50da2ba802404b9830aca277644b2f9aa00155414fefe736ecec25. 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/FRX762312254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd70fc8436fdcf5cbefd6320bb41973a1d70dce64a51c7f0f330ffdae0ed638. 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/DGA0L2431328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd68c781dcb17e772b603306974a5a6836f0f4a94873a0546e23e23d39206fb8. 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/DGA092477919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58901e96f2645ec5c66c8fa740724b001a9dcdbd2667ba41b9779672067567e. 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/DGA052495184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333c26039652749fdf2bed86b7112fc735badaa4427379d7216bc8d4a18dfdbd. 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/FRX282431400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c7f62df45eed9521d0fab183ba43b56e07c0a23ec8489a9597a8fc9bce192b. 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/FR96X2421764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbcf2362024cdad7686da212c093595def6d85b6ddf33e405163d3b0ec5b306. 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/DGA092369220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b41b0a1ba11534401b22eacd552b8c31f8f8d178713f6773d982d8c912a294d. 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/DGA052392068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2091c99531d6e6bb887c293d7f4d3a0bf327dc2ffba0e0f6f884ea64a74c489c. 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/FR96X2304666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95949585b12c7e810ff4cebf5c303fad72b08bfc74ea0a2af908f4ab989fa7a. 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/FR10S2328903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65380ec661a75ceacfb527ec2258c456d1a42579046d853913295863170d78a. 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/FRX872226133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8783a1f0a20a7aa58e74bf40791f02344e021f853b2570d44404b27d8add0d4. 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/FRX452274212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a47a301e0c864382c67ab285082534fddf71c1a1e7780808f32c44fe60327c. 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/FRX452231412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f986d263ccb4801a67923d8d21fefc25b1c5b4a71365c26f87321d2c93559a9. 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/FR59R2217789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fcc534333b767690fafed8f59f671df32a8aff714767429f1b84644b73c16d3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR2X42212800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5065d69a7a9d2574050790c98f087851449f7564cf4601949816d12441e02b. 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/FRS182154632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87ed6d92716f0fa0265a727e0688df685d8002c175fcc43f1a6996c8b95087e. 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/FRS182152490.