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 0x51cd3114e145e5347132e04c89362a7b7c6937df2a7f57c6549a03da6613c8ca. 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/529472cd-6f83-4800-9396-3cb7570dfed8.json and https://artists.proofprofile.net/proofs/artist/529472cd-6f83-4800-9396-3cb7570dfed8.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 0x3df786ba29a9791034b2f7321f90851cda1b5f182fae7586033ee015797eecbd. 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/SE37J1504782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14641162ee4882b9ddbc28a5de8e39e8290abf7518d7b706227cbead2a4bc08. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE37J1504780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cf30ce3a9c487cfb676c5057d733783b3f58880b2f4a10583128049ed5b27e. 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/SE37J1504779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3a8b2b951dc38b5748dedcc5bec22536fc98252cc02e63e0b8b0ce7b74b260. 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/SE37J1600160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ee5195d36ebd744eb334b479a7c80b6f446b511fada864893aac427b87624c. 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/SE37J1600159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfde9263b29d20e73bc4a0d31dfa1ad11228b292d17b32c951d01123f0d054d. 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/SE37J1600158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82df5b5a15268d6782e45c2bfcdf1d1d3088040e8f5561f2498688cfbc51c96e. 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/SE37J1600161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aece5cc4150dabbd04e87c6267ac8eb72b44c4e5a0926a8d08dd6979610e686. 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/SE37J1600162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfde9263b29d20e73bc4a0d31dfa1ad11228b292d17b32c951d01123f0d054d. 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/SE37J1600158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82df5b5a15268d6782e45c2bfcdf1d1d3088040e8f5561f2498688cfbc51c96e. 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/SE37J1600161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aece5cc4150dabbd04e87c6267ac8eb72b44c4e5a0926a8d08dd6979610e686. 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/SE37J1600162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3a8b2b951dc38b5748dedcc5bec22536fc98252cc02e63e0b8b0ce7b74b260. 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/SE37J1600160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ee5195d36ebd744eb334b479a7c80b6f446b511fada864893aac427b87624c. 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/SE37J1600159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aece5cc4150dabbd04e87c6267ac8eb72b44c4e5a0926a8d08dd6979610e686. 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/SE37J1600162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3a8b2b951dc38b5748dedcc5bec22536fc98252cc02e63e0b8b0ce7b74b260. 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/SE37J1600160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ee5195d36ebd744eb334b479a7c80b6f446b511fada864893aac427b87624c. 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/SE37J1600159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfde9263b29d20e73bc4a0d31dfa1ad11228b292d17b32c951d01123f0d054d. 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/SE37J1600158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df786ba29a9791034b2f7321f90851cda1b5f182fae7586033ee015797eecbd. 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/SE37J1504782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cf30ce3a9c487cfb676c5057d733783b3f58880b2f4a10583128049ed5b27e. 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/SE37J1504779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7923ce64cee48cde84704e68e12ee91345ce76bc652450ce54c16ebd52b249b1. 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/SE37J1504781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59d956e431a4ba1b1ae9418301ad23086e772bb0d61b66d761f1f50b57d2175. 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/SE37J1504778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14641162ee4882b9ddbc28a5de8e39e8290abf7518d7b706227cbead2a4bc08. 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/SE37J1504780.