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 0xca61e1af53a700465d54a2601874c7f18bb611d08829ad25b3ee65c6f920e20e. 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/8b3b2862-84f6-4c0c-9921-286b86f2d53d.json and https://artists.proofprofile.net/proofs/artist/8b3b2862-84f6-4c0c-9921-286b86f2d53d.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 0x0c8847f0c81cb968fd10bf165dc855bff1ac6d0bcd98ee7b1b997196a68e7e69. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:10:56Z), 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/BGA471508006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058d3f1c73f27049e8aed64e2968b414c04e7b1da0783af19b8ba3bbe8690193. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/BGA471508010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b95833a6a85bca9ad650f01de29dac7805ddc00960cb9d2914a693d68471de. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:32:42Z), 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/QMBZ91690871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9a0fc6366457b838b34820059b023f35839e9f0f674da1cfc54ebfd4d746b7. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QMBZ91690872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2a1931b4afa992e34feb97db343b440557bb1859e0e0f674f44be7a9d42e21. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QMBZ91690874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11a9dcfa316c5f3f06d4e2fd9b62b544092f19ec36decdfe917b028eb0e4987. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMBZ91690876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4688e1709b5acaa8b1a1d647118a9f9365c0e2c600c250d51f303292d38f09b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QMBZ91690878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6720d8c837bb17052a81367d412dc80a39b426dd6673c58968e5910156693ca1. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QMBZ91690879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce92e81a7bea0823bb7500ad801a30179be4778c527fef804187777cd3da9ae. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:19:04Z), 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/QMEU32212608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afce3eccb2d241eeaec387c98d2bc4aec9aa72dc3f65a6af20ccc61fbc79955. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:36:38Z), 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/QMEU32212609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd645ff7aeb5ab60d8d1725d5eaacdaa48be88b42606d5969200980cf36078f1a. 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/QMEU32212605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869d32e70c25c29016fbf3edee3123c777bbf664405ac23cd405ac345f6603ec. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMEU32212606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce92e81a7bea0823bb7500ad801a30179be4778c527fef804187777cd3da9ae. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:41:35Z), 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/QMEU32212608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afce3eccb2d241eeaec387c98d2bc4aec9aa72dc3f65a6af20ccc61fbc79955. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QMEU32212609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8462fe6ea47375b3a9822d38acc153d1aff6c8683e1419021064a361163790f5. 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/QMEU32212611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa378b2d24e018baf8a515fd39c3dc04cf5437937af34e69cf3737a7a0e0ea770. 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/GBMJG1605071.