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 0x035ab25a29d7ef88db1a24d5d812f70c6f57741c88450a352b4df83a347fccbb. 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/0334f47d-a21c-4da9-a956-1d44eeea4f72.json and https://artists.proofprofile.net/proofs/artist/0334f47d-a21c-4da9-a956-1d44eeea4f72.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 0x1f9b28d45057728983982788ef3d5413a97a21565fa400c9c4ec516f433b2995. 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/FR10S2236068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc866826bf0d4f294137c5264e4b6005b5e988d70544e43a84ebad8a7bc50d5f. 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/FR10S2277568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf076ed3b5f4d33e80046ded4820365910ab7f0544a0b400059ef6fc7f7a9500. 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/FR10S2277543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418f9a0cbc05746e545f3fd6c119886ac074f9a62498f0dfe5a1899eff917135. 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/INO452300142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33297219739d9b82a813432d1a71affd24f88c926fcac4811e6b392942be5679. 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/FR96X2271667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621dfa163a82a89fe5afdc1765288004f9fbc75fe077a37ad9a3ff34ef4131a5. 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/FR10S2299596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55514eea54d4aa9137b610f79cba3a330372a1aab19c120b39c7855f8fd111a. 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/FR10S2299595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c94c099ad9cc893a96a9d8b8d7b30d83c725987a9969ec2d912c4c1a687c52. 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/FR10S2277577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd7f1995f7fa9019edc43c496c5ed893b03246d2f545e3ef69fb9a7e7c901a4. 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/FR10S2236033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50dc9741509eb04ae86c25af94ff49c8713aa1eae50254ad27832ef74a53cf2. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DGA082480647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f5309672a1b5bb4da67aa18591ac915e957f24ceb618bc53d57bbcf952f8b3. 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/FR10S2401875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c49b3ecfbd1006958377e6f83c0bb74771d3813d6c16152aa74220fa55ffc7a. 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/DGA082404575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921aac98e9099a91efdda89354c21a50155861039d1279a7ca58fbd624fd9ae2. 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/FR10S2401868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85cfbaf5dc747e8e5e380f3858cdb645b373546cb829a0979a94625ee915de2e. 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/FR10S2470692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76103aa29c796d846c4e830c43a3c6510815584fad402991e9cfaaf4eb3bc28d. 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/FRX282250789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddd498ba9a7191bb094313953cbb44f9d84b8d168d9b77540b4d1af9e573211. 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/FR10S2236030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe24621af60957e71e125f2506c6844352e2ddc216760d38b723ad4ef92fe12. 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/FR10S2300267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2b96668daddd70d0ade93f61129f5e890fb1efb08edf01d82e735759f72b69. 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/FR10S2277557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c43ef83769ae15e3d0d4228a84673c0d41afe9e475e0830e819bb92e2e0ba7e. 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/DGA0S2449235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c9845ac5740a90420c2823e41270063c02d17f06f9d6285ae6665a905c2788. 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/FR10S2277556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15c3146ee755d5583cdbcfb49129ed0aced757ae79aa3eb4335bd212afc4476. 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/FR10S2288987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c229353a5bf7e8f2f024d8610d8034e2abd576f40a57f2ff24211a9fed41bd. 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/FR10S2236036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258c3d22b0ce64766dc66434d26aa748e1232e0c29fcfbed73304af704d2cce9. 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/FR10S2277593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38e3e548e75652e372f6410f79ccf0e968fd8052b423435f08835827f830c86. 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/FR10S2277569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4b431367eec4f747f9e4958401c4c5aedeaf9399be4e1bb1e61866854215e0. 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/FR10S2277560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db06e238db44e261662adcf0c2f853193620b7c5a045215ba788769fcabd573. 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/FR10S2277590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7300837cae7949a7a59181b88a6acde27be3848bc69ad33afc69ebabc075883. 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/FR59R2514868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb767492e59afa2d6f52781f7f1d3557a0da4ea0c2853b0c687d41860b9f2e6bf. 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/FR10S2241037.