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 0x0fe51826896209f4022f37c06ab9aa7e3a72d4f4aaee22e9089b35aae0120c5e. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b85ebee-a222-4aba-be0e-d89204aa2c93.json and https://artists.proofprofile.net/proofs/artist/3b85ebee-a222-4aba-be0e-d89204aa2c93.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sound Healing Music: Commemorative Collector's Edition
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 0xc8c7db75b2d31269b8e5f260eac54773ea360447a793da4745e4c1333041dcc3. 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/USCGJ1402794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41850aa571ecb1b0811d25e3b8384ad75b9ca4766ce970c6c19ab06c0080c4a3. 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/USCGJ1402797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7906f849986e2d569ec4f3572037ca86a9c44ed94374ad8c342d9d4830ff6fd4. 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/USCGJ1402801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6960931fb4e8723c353eaa75d649c31f507a0e01108053f465682ffc491557b2. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USCGJ1402802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa6f6c5dfb5eecaa7de32e589ff3609618d34e2e8b278cbc67e46134ee1323a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USCGJ1402793.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae22c92329f49ab28e0a2d481ca5fea5ff903b4371a55d74511266ed3935724e. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USCGJ1402805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb19498eccdaaaee1b0721284de9075625eacdd53d094148671932623eccf14. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USCGJ1402800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609352837fa95de418db34ca62d26bb0a1e1eb0289c243ae8fb01795f6960aeb. 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/USHM21355723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb52a6206618e7a6f1257e82c98d1d1a020e8ac8684b2df9dac3498f43f5647c. 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/USHM21355724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4306aa0f9388834b5bfa2c0a59fb03a7e354f5bbc970dbb3d1fc88c2413d6d2. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USHM21355722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e64092eb480ec4cd5534ec071a134319ac08d51ea1470ec3d0ff30cb0b3a3f. 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/USHM21356004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96db18dd00a223d179f1b2d9d287e83a14840a217a6a76e04978c828e4b1da6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USHM21356011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ce31cc2313bb2622468ec2f8727b16366401f1733ac979d7e4599667698029. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/USHM21356005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9438cc48cd17f2117cd51d4e0039275b50016b733147c07ebc16c9eea609249. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USHM21356006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda5fdac45497aa31f3608aa19dccbb64c2e8be9911b9571e52c69951f7a41d0. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USHM21356007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a80495fe2c9ca9edd01268fb7bc70d7c9721f03b38da2df3175958903682fa2. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USHM21356008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf147ec48fadde3e94698736ce7d753d2638366d366fb530d0e1b83aa7114359. 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/USCGH0965534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37dd9a7592f386049523cd1c9cfd4bc1bb3a43b4da9a77f2645088805ca3024d. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/USCGH0965535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ca6abb4fd7716fc4101663f1d837b3ca63b737119c82cbbfad672e9abae7a2. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/USCGH0965536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed145bc5455436c43109a6539dfd3b8528d00c1bdc49ca0e524a6a24edb6c7c. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/USCGH0965537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d11bc3610b3db8d7292ec9fb6ea2f7cc0f974d587ddf21ae849d42866e3cca. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USCGH0965538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcc91221421d67d480e526614f9587eeb58f8adc59bcfcac59c5df0cb5c5459. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USCGH0965539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0dc6b4a040ec5cc664a4e8c0e29e7752897d2216c861ce63d576fee4e8b542. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USCGH0965540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e6941214f51f62280da3fa089cfbdfaf9186696cf5909e1f0669022157abdd. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USCGH0965541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946c4c67538547c642391f92d4fc4ba6673386b8545517937fc927211be8a629. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USCGH0965542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c214f261d38a27b375050410437a52027d59f5ccb787126af2f461fa292040. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USCGH0965543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c26f8e39b2c58be00c7417c51b3efb73ffe55bb9abb61327b7d6c9733ac37c7. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USCGH0965544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7a91a3125e65d87b3370a24969e3eec1516d82b50ec26132692dcf474a89c4. 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/USCGH0971232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b531f00e715ec1b17da8abbdc703f44589d34e5ea0421df12b54fb21af30804. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USCGH0971233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db05ebfe424a355059973ff22ac674bf8baf72f5d2492b135af7741c129536f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USCGH0971234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11f5bcf33d845da1a82507c185cb5395d7f3223a79b5efc08ecccf1901803ad. 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/USCGH0971235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fac7ceea04bed332301eec5ae6370e8261465733976f55321a3030dd9d4275. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USCGH0971237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40785fffab4dfffe368fbe85aa733f0ed9586ca69c47c6ca1372f93aae2f95f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USCGH0971238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ee6e0c32000b2dd067feea4c6a467ecb6e055fb97934a30718ac9839d5240b. 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/USCGH0985734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abd786929bee9affb95d7df4c34fdad484f2f473a08e81cb5592ebdd57d4a63. 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/USCGH0985735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b6afdecdc0513da00213a956c91ad4e58ff42737662e96b9e61b55aea6b9be. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:35:05Z), 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/USCGH0971236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4b7396dd36a2bb135a58a733bd9264ac0c240acf3897389d678fd8de0b824b. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USCGH0985733.