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 0x5d091c726c5afe74cb526aed007e0f3e8a0d46c91e47019b52a596b9e0e79e1a. 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/56281cf4-512a-42b9-97fe-dc052cd37932.json and https://artists.proofprofile.net/proofs/artist/56281cf4-512a-42b9-97fe-dc052cd37932.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 0xe34111fd41b13843e58f3009a5b6e6c87012fa4db4aa45ad2c96e794c1876498. 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/BK4DA2302124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0d0174a5533843178122b69e331cd505bf991d58895b7abd9695034d6bd229. 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/BK4DA2301208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0d0174a5533843178122b69e331cd505bf991d58895b7abd9695034d6bd229. 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/BK4DA2301208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b80f9c6b46ed9696e71e6abd6f8e2df24ca5eb7d2f2286575bef9342f9771b4. 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/UKS422200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2779dbac2bbe52b4d3b36e1a078a6665b2be9e434cdae83d520b4672ae86042e. 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/UKS422200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3237a05be5f896f91fd7cb903f875ab7bb5c1bb4bce5eceb66fcfbb245771f31. 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/UKS422200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74803c03c0923fb3d6bd7ed394d59ef1ba6c600fb2046ff80c646d50c09f3e47. 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/UKS422200067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af8bba4a02ce543aade55c3943d293b3278cbcc8585874f698d48058c8c75ba. 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/UKS422200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e48dee35e6ca698a3c25cb656b172ecde18ef5b3b45bbf8b0cbd1497d05f618. 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/UKS422200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de181395f2e4d600e3779c497843df5f60eac80f49247292f8cb1bd10ea0444. 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/UKS422200081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e00c5d33df991eb06ab879da577c723181038f3e95681e29f1ef7a214ab84e. 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/UKS422200082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a727c306855dcf1a99a06817de7dec7866f6244515f66efbc729ac6c5c7ea5. 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/UKS422400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44b88a587ac404a660c105ef48c7847ddd3054d02650121b3c67777f37215d5. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/UKS422400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0d036493ac80dd4862a1b1750d377a89109c8b1c60f79a99be995a3bb68036. 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/UKS422400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84cdd6c38ae7434fd1ca3f6c87fba57791092e6892d3cef4cb2a55bccbebcda. 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/UKS422400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39002621c48f022907834820d6fc74008422450ced707351a3dabc571a9cb5a9. 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/UKS422400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d76217b7cd87ec9b8710cb4d74761003976e4acbac9d863ce1d9ae335ad6df. 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/UKS422300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07f44a2108a234d7313faa55180d0fbe2813b85da03d07ce1c50315cd3ccedd. 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/UKS422200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b61ac72151225e4e43af7cd3bb932f2fee0324f046d5bda8adcddc80016f36. 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/UKS422200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d8fa864eec768aff9c6550f07c046ccd3da0484a3aac7e7a730f0923232a05. 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/UKS422200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a5a9135c14c20da2ed8650cceb2ab08dcfd790c21d3abf31aa9bd4494be76d. 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/UKS422200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f581a721ecdb5ef2dab5c3fd0e82ae5142556f09e97cf81227fca6e547569f. 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/UKS422000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25490bd61e9b67738594f774cf255c2e23a2cea617c598a766a8753b1b27f40f. 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/UKS422000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde435fb074d3b34b47a91fd28eee915d5a7abb89004410a845f85351e6d81ea5. 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/UKS422100082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1248b917dd29053eb1b1a69ea0ecfaa3a62a13069a3bd31bca67dcf302c9f3be. 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/UKS422100083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25490bd61e9b67738594f774cf255c2e23a2cea617c598a766a8753b1b27f40f. 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/UKS422000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01aee1e10b7e1930b2b5cd635865c08aa331d2e304992371c45f3d9d9843284f. 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/UKS422100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f581a721ecdb5ef2dab5c3fd0e82ae5142556f09e97cf81227fca6e547569f. 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/UKS422000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f791a59409923db84e0436d6012370f3b59460111a6cb6b89436731dc295ebd. 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/UKS422100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfadafd6ad0e9bfff6bfde7e054c5925f93e9f0504f3444fba6ff7bc77932079d. 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/UKS422000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56e85c32a3ca399ef23ea63885e3e6e13abf488d3106dacca49f95bd4b95b9f. 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/GBMA21830031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb4642c79608f6e882d56222d48c562b8b9521af233683c5c81fa59a968ef7f. 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/GBLFP1958263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b53a0bb21119699732e74b0ce442a2e0e3f12c6bc9268e37c5c9736676c0c7. 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/UKS422000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2e2ff85cf0b72e0f678e3986efc530aead41f270d9eb029a6167561138070f. 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/UKS422000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5db28c9fe8cb7a28125fa2198bb4f0c0616fd8d6461b4375e96cec92a33dbd. 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/UKS422000013.