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 0xd393213a8f9acf16c7a08045d992bdd5cd829e02696121d39a89be4b01f1f5cc. 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/859edf4c-88bb-4c8a-a114-005ee5e3b602.json and https://artists.proofprofile.net/proofs/artist/859edf4c-88bb-4c8a-a114-005ee5e3b602.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 0xc6fcfef79f2a116834815c99f2277ba5a7a0e7cb91e7931da5c51c86b2739781. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/CZCG72400072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2de4ce5c74e7d6a7aceee280cdd31e60fadfe8b2522a27970940769af8a8092. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/CZCG72400076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e1ff5311407e6efc6edaea85b27c8f2163239161717488e99c18099ee408f6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CZCG72400077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd4cd3c127d5f11321b6196f471747275531cbfeaf4bf6c11a4f4279d1fecd1. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:42:46Z), 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/CZCG72400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73ffbb3440ced6d1ef5c512a414da96c3f793a78ba2e628971685cf2f7af32c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CZCG72400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9c2910c614fe0c44180641fd4840dcb439361efafc9d1c700547a4b406d832. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CZCG72400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2a7df5df8fdd583f2d45bdec7a8a342970ce410f192a9a592528606088b9b1. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/CZCG72400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c975c108ff171c1783e3ce19bf87a95e5de192f4eaf3b5d648c04abd14acf92. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/CZCG72400098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b674b70950f9c372a0769afd3c150a4285e16584c69e49b15f5b8071f7158e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CZCG72400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352d357b9d36c5da532a09fc2e9fb23ff5bb9d92e55012d3a7a6b19d90a48c61. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/CZCG72400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x238cf641e2130a5461989d11be7eae54acecf526496d25baad3b3cb9476c7e60. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CZCG72400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29a4518bee9ff4830ff99b611f7d640b3f0e4fcd42e6ca0dfa460bf4156470a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:32:59Z), 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/CZCG72400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a39a8015d77cc712b679461c697b9adeb74911c6fb7c9d539f8f16c254c591. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/CZCG72400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde17788807c17096ff3955013d63fa17645a664e3f5d9055307d5474b3b5148b. 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/CZCG72400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4947c92764c22a8785099c436105dc0deb400d598abf873fc267e3a7b82972e4. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/CZCG72400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a864cbfb451ba7eb31dbc974cd965280855cf5b9eecf35cacf856a4e7e89ab5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CZA161340571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa98451dec9e4cf963c15034e22994e5a317cae48626bac5a4f968a1b5e94f5. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/CZA161340572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfba2712c25aa74eabf3b44009239dcfb9085363231a827c9a37a3ff02fa7a6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/CZA161340574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e0b4466a92e5db1bf3e2c20e2d77edf364b1b1ba1630b5955be37e78b5d70f. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/CZA161340577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb6d9c85d425f8501828f9ad68bfe9c66074fac3485e690229048589905b46b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CZA161340580.