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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 0x99a496f9868bb11fedf62a4aeb1994d598b4c70534d53fa778773536f35b24a8. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/beb70db6-7c89-477b-8f1a-81d4fdb9922f.json and https://artists.proofprofile.net/proofs/artist/beb70db6-7c89-477b-8f1a-81d4fdb9922f.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 0xaff58b73ffb4323f5e43dd80e5385c66d4ca756ff8b0b53345a371818292cae7. 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/USAT20101309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63522921edeb0d1eb49b4f20b01eac1bb9fffdd0230dd3782ef0e1ab8fa9ede0. 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/USAT20105491.
Against All Odds (Take a Look at Me Now)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0120d9d9c36ed13735af106e08f00b04aa9bcb102ea7d9d6e4b0de44fda920d5. 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/PLA551400715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f96c7b173045de35205f6b6aab582c658ea1c08d51073f56d31ac6b1558dae. 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/SE5IB2000233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942f2de2e9c0cd1bb874588312389a2dad24c0abb7c81571fd609b6bbffe24e9. 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/GBAYE1101134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d865497a1b804f18a39f096b87020db1b3727e83c982b60122f45291f3267b. 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/SE5IB1600546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2507891df7217b520697b2363fbdeaa7c164bd7659a60980bd0e46e4ba7e24fb. 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/USWB10400369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10bfa5f8e53f940c3279d65cbadf3420c82b914a81178ab23b8c64628a12e4b. 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/GBCRL2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2077f3cefd96e281c434ffcf95ab77d72fe4673354ed4a9e7928a524c437560. 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/USAT21000384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62619a891b235dd7af46cd17236cdccf463601b712c85ff96bfdc50669072145. 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/USGI19400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b762ea8d4ce3f156aa66581416260dd40faae5a718a0062c9695ace45f495c5. 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/GBAAP9700144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd52edd0f97fa49edfa8e86e50fde700f16a55dbd57da25d30724ba4ee348e4. 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/USAT22221093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864853d1721e5d89ca7917c1ec82436386eff7f42097708c757a03a378ae96dd. 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/GBCRL1900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c97465114ca390250776ad5e6cadf202a08d1de539b7fdca433933115c343ed. 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/NOAGW9709080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9decbce198c1470863cc3eaf1ce53bd278966b5a0700214db769154a496fd35. 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/USSL19300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606b65f8c13d9438041eec45281873e18b81eb236b4d9ead43fdf3daa982f0ab. 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/USWB11002086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3282b8afe696dda1dcc5a85e476f38906c22e512092d9175495fff0fedeb7a. 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/GBAYE0001656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0f724903b2287e68d5315f7bcbda7ea0fcd4047775e94b4b2443fb43c173c4. 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/GBCRL1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb393558773ee39aa4cecc574b2ecf23c2f6cb765233e4564fbfcf5b389e68119. 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/USAT21812735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab6d32a9f34020a6864adaab8b22a6031c4cfd7d3ff7a29b5f8c9b5018248ad. 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/USAT20105497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589a37adb15a082229324b68abfdbd1640a72a855c477839ea92cfe75e3e1343. 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/GBAYE0001564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd4666cb71d656be600bb56fe80b0186391663e6d94224de65ec77e29c3a858. 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/ES5010188006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d084dc8e475af4d1626a8beb98db9bea99aa58edf0b61fa63e6e5073ad1758. 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/NLA321392924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87c47e93eb00f08e613e0882eaa67e844845ab0d7f231e4d9e9e08f8d983c9b. 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/USAT21700274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8e88f073705a58afacf532a75acd2b92d5a0857cc1bc8cc9912e8d5cf7abd1. 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/CAU117800449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89010a55041d20c7d6d118741689998c2a816bab7fdb7ba5c428747d5d254a46. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CAU117800443.
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 0x49d5d134aa1bdf9841f4f773f1c01172cef7bf89782d647e6aeb4742bbaf78fe. 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/CAU117800445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8b531bce0fc4194e39a8bffb791c75118906b32faffea94df71da78f5e16a6. 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/CAU117800447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335a1637b03d48d7aa285feddce6d4f32a5b266067f7df3297666a1ce7bb122f. 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/USAT21002105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3282b8afe696dda1dcc5a85e476f38906c22e512092d9175495fff0fedeb7a. 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/GBAYE0001656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df0327eed249b83373fb889a8c2b4f0b69e1ede22ef8ea951c32a602ee8d886. 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/GBCRL1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4325d013a8e0b8bf4369d36022f399f65353a2c86e5f9bece1572956b290d22b. 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/GBCRL1900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf894aeb23d5cf9252f347e42430dd42b97da410426b25764364b9d72412caea2. 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/PLA550900249.