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 0x9e1126a3dff6dbec3bce577d3a385b8a9a0f6f4273eb249a96b74fc9367789d2. 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/bae549b7-12b6-4d47-979c-6994e7ced13e.json and https://artists.proofprofile.net/proofs/artist/bae549b7-12b6-4d47-979c-6994e7ced13e.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 0x07c133ae4efc1f355264f19e8e7127feab3fde52ff260d1a3997e60b070faea4. 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/US7VG2122931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b44e59dda4593686fc336a1c48aebb92140a28a07ebbfcbfb748cbeb0201dd9. 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/QZTPX2331725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1995f7997422bb4c031f18b2671053144229a087e713a523c44f50ac84448d08. 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/QZHZ52161992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ddf4b88a98c5d576b4e1ea9c76557bafc69b64876fd5acba0c76cbde8b4b6b2. 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/QZHZ52161991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591476db11135acc21904b426cf3d453016f4eaf7d14fb281eb7b3b3cd9362ac. 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/USHM82448189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e970fef12ba25e94c6e83ae6621d1a5e046f85f169c1bfc5f322d6e7ccfb9ff. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZGLS2363739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894ca210b6b81814ac94e0dcea84308e82ab3dc26a02e8fd48393bba727aa32e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZGLS2369043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56c3fa0422ef58904f99cde98d21c33017132af9ed969e8f56455ab6420921f. 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/QZGLS2156822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb313cc0b0be1ad81a8bc0eaad5a2de6a41525dc60e5deae843af24d959ac6a33. 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/QZGLS2048907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10984794bb983bb870611657fce8793edc7ee91637353214910faedc012bddf1. 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/QZGLS2048908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8e06d8b65e894a3604f739e9832e8012b8a98f42bd731598267de50df0afb3. 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/QZGLS2048911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b16df5a89c13cd18953ef7deaa7207b932838ee042a44514d3668460e66282. 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/US7VG2149034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afda2e750dadbae0c09b785d55fd21185bfae53dc5be7f13f31715a4f2b0e26. 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/US7VG2122896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20933e114d507a3aea647544f5db581f75578c99dfb542d43c237eef53e630d9. 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/US7VG2122893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7b96b5024b3e579b10756ad7710ae76c9a8b014859563b29c721f564f7a3d2. 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/US7VG2122894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e8147a5c4d94a64ff17bec478c6c53039052fd2d6e5c7ac7a7bfb48b29a0fd. 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/US7VG2122895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d710d4aaef10eda7a0e8657a45638bfeb3a46e90a45124737ac99ee3b0aa89a. 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/US7VG2122845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ff3f15e2f00ebeb0788349c2e890f5b69637cfec8597e220862ccf638a80f5. 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/QZTPX2475215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6f1f35beddcdf53af7f57c86304e57fb31bd29e954e1c8b65fb93661780572. 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/QZTVM2419435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d80b28cd8c5de704ec00be81364e58f0908b3797d5c53f7e8afb1fdd6a4994. 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/QZTVM2468681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ea87621b1a7e1921d1ad8568e0945a6b5315591d181d1d6d097e0ecae200c5. 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/QZTVM2469226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18997e9fd627a5e9e04dadaafb27446377457ea35805bf878016ebd12a95895d. 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/QZTVM2419438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2479f36fdbbba43d281650d79cd991b992a409f94761e4c07aab578a1f97007. 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/QZTVM2469227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6f1f35beddcdf53af7f57c86304e57fb31bd29e954e1c8b65fb93661780572. 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/QZTVM2419435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ff3f15e2f00ebeb0788349c2e890f5b69637cfec8597e220862ccf638a80f5. 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/QZTPX2475215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106c7b5789eeda36cd98f6c583176a5270c63f70e0182eda383d63ec6213a87a. 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/QZW9M2213477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd47846be01abc41a2f087522ce3f9605bb8ca6f01a788d6cc3ca036a2dcf3ed. 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/QZW9K2366089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87cc71def64372fa36f16992970f26e2b14996bfb901d00c5a58c04492bc155. 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/QZW9K2366090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2159b50d40d394392410e84225bd18018f914ae875b364965e5bc0afe97612b5. 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/QZMZ92335036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2423173fc5435b59509981a07367563b609f92eb98dedfaa7b799aeee4b9ac93. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZW9K2366091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98b78d64bcf3f4b57bbee4cdd455eb5eeb82856e2f522e5d6e9a5467e72bf9a. 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/QZW9K2366092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2159b50d40d394392410e84225bd18018f914ae875b364965e5bc0afe97612b5. 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/QZMZ92335036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa33418ea0ef88f985bbcbf579734fe5ccffbc2fc6f08eac0337b88d0e241ad5. 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/QZGLM2108370.