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 0xd7c9cfd3fd40e6e4bb44c6e3cbd724ab27267e431c6cb3c17553d0eb7d5797e2. 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/08829851-c25b-4036-9808-33436d826df3.json and https://artists.proofprofile.net/proofs/artist/08829851-c25b-4036-9808-33436d826df3.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 0x783c248a4ce2db20df83866c533cf0ae088784d6c746380cb858e51b16579a3f. 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/USWD12219917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa78a20453b79d535d4e6b96eeee4b1b9497d9849b253175076f59410a3f1b91. 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/USWD12219918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ad212fd9a1bee4faa2e28e3f14e6ab99c66459b573f16beaaa9feeb0399087. 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/USWD12219919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270056f004abea1e1dbd6d6f40ecfd00a1a8e0192015c2312135b64bca47c351. 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/USWD12219920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a304b9a6c0e6381200f2273217eefc5ba3ae5b9147dd81f4e5e7f6bf29843f3. 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/USWD12219921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b68ed8386c5552efc8d1f4d53efdeb40d8cee4b4f1f12900796931a81c64f2. 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/USWD12219922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9b9406a6a7e20f2a8f04ef1910fcb62114bf7e04852cefcb7594858e68cf87. 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/USWD12219923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa8537da1f6067eab42183e8c35d1365f27adba4051fdc6e2979bfda9187ab8. 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/USWD12219924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968c444808c1d1aeace32987c794334cfedd945d14eb0629cbaca9125abc128e. 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/USWD12219925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f57d3138974e69a21aaba9daee45928ea6f6ba6cc4699243f4474f686adc0f2. 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/USWD12219926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b25e774c52ea3b982929ca49aac07e7a2ff3ce397ff5498073feb2e9bf9372e. 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/USWD12219927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0b27db49a244e0f345759c92f8680480425d488641df0fe8c0266c022d4bb8. 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/USWD12219928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a7e2e88b15aea8c947aa8dd0510675d3b617dd7b65fc4def1fa616d77898db. 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/USWD12219929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c4d7c7b94f7db89a6b013fc6b05ba0a6d0c5a015d4027fb9801ae7f84b6d4f. 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/USWD12219930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8480b7f1323d7ac4e1f48e729cb83e1da80f6b2ceea9f278de7eada42a8d853. 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/USWD12219931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae566f222076782a8d25c90c537187983db9acef140c65d7eed01c50b98a8d48. 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/USWD12219932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86814c6902f7aee5bad72d40cc704e06f2c4c12ce1ad0cff53261fc9f732783. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USWD12430012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389cef1f304b38ec3e9b9b1ef9fde5c8909e2d766471f3cfe8dcb3294462ab01. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USHR12448896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24648b811db9bf2d967599456da59a72b7d33e61d75f7341f4dbea7cfc7e7d33. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USHR12448899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4441af59cf72222324c7e328d0ac5913a05418e11398b943b95647dd19b98c2. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USWD12536234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8710e5ed367855119edd30cd4b429c053ebb33bee479e847c190947d1a307ca0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USWD12536236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf71f08906f165c74d86cf9803f1689f91c763a770654be0fe64007ea4ffbf0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USWD12536237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8663a128f5bdfb6e5787e84b2d264874744833fc3fbefa0560a855f7ae2543e4. 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/USWD12213875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad3795b11b6b3e7bd983e8d2741cf97b55147a3dbbaa5c70c1e53ebe3c60502. 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/USWD12213876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5679ea91e1150d5a17bbeae21ce97b87d27b94f51939ba2cb24dc8c1311f0883. 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/USWD12213877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e84d99233997a3ca8fef26ae7af3bef17ec020b98b92b4d313386304339f009. 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/USWD12213878.