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 0x01a42b8d92c08ff56dcf93f0f5cd070afc07e3d7441a9f417eb35fc4fa271211. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a06198b5-575a-47ac-946c-07f50be090cd.json and https://artists.proofprofile.net/proofs/artist/a06198b5-575a-47ac-946c-07f50be090cd.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 0x21f48cbf28fb0dc282d1fc19b4f22a1b9d81c7e2e8c31fd1b06127834062fe11. 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/DEA891300372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d08f3c97eaba2676e5e61c679743e3bb47a74e219c353c304d5e09ee39bc1b9. 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/DEA891300384.
Magic Moments 15 (In the Spirit of Jazz)
Rhapsody in Paris (Arr. by Franck Tortiller)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957d4c40fc25382a37ce0d1307c6ac851dc158c4a8d2182cfc7d89d854f489e1. 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/DEA891700257.
Black Is the Color of My True Love's Hair
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9baa2ecefdcb91fe45fd2ea62a9d692b50ed90897fb94817f3e0a74d3db44c. 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/DEA891700187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68b30bfe6972b4dde2e6ebddf9a088422d049a9f0c450dc0f3ab09e85bef74c. 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/DEA891700370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f6f504d1e3f685cb391b135b7cb54f74faf1d3fa12e4ef3e80ec3a7e233720. 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/DEA891700371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcba158d4026b2ec0d698fc6815563c0608f60198fa9f9ba029c2de02f1eff8. 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/DEA891700376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616132607a138203b5d4ca3c26ebc846a55a8f3527764dedf85b083922d17b70. 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/DEA891700377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae416f01f16f4a4058ce60a9d43307e95a6dc617553f28b4e4f75dab9dda3463. 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/DEA891700378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4f3b5ba5cdbb009cfb1c926777d76d84d86e4639f91493969ad90180891f26. 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/DEA891700380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40f40e6c81813ec935dcef8b29adb15bf42da395853022b33a3eb1c0146baa4. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEA891700372.
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 0xe1b1b3175a62a6fc2b96b0da59ab111067e2a9d77ff1fe4a7159d495c6b89c42. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DEA891700373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c58e1fad45f841f704b962cc7057f058af90557e7f83a08ae8866fe3c6c7f92. 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/DEA891700374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd68c1fd20fc44880b4db5761acae1a12d62c80648cd54ae5cb95beb9e0c4db. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEA891700375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f314c66e6fa383d883c611072feb010a3e984f19d7c6037ada3ec01fb914a9a. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEA891700379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74a49d6805cf1fadf45f09d51c5c02536f2cc6315974b0650f351f8b77411f5. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEA891700381.
Mein Beethoven (with Rainer Böhm & Patrice Héral)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9bc7690986877b362bbd22d2eb14440b71dd7d291074813f5a36010b0a7811. 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/DEA891500083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e487d64a175b1085ea5e1c9ba64d47c0deaf8f34104c66e09cfe193e7bc954. 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/DEA891500089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b342c0e8a287b35415dd22ba98cf9ef87115192e590f280130442c5ceefa92. 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/DEA891500092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7d22868dcec12292b1d762f4033e56c452c9cea5d7bfa2ebe2c2f9d3204397. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEA891500080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc098101e934652d5d5fdffa254e037ee6f24ac1915aad06cccf9a5b72c4ba6a7. 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/DEA891500081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413a35a91d8c94c53637656256131051cc2a7b1872403a309d6d2466383188cd. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/DEA891500082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2dad7f428b0c69930e9541836d44a9ba3d2743fb40b88f6f5fcc2ba23d8368. 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/DEA891500084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54f8ddc71601ae2f36cafca3d311f04e037ad506c63f79a846ed6fe6950ba18. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DEA891500085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f7249998c6b24867c4c3ecab4552c4f9998f995dc5ae0d61a2579fb0176926. 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/DEA891500086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd43558e68856d95cbcc67f47af702c53ade5e71f417b3dd5d2f451358611bb. 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/DEA892200202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1bce429c32f82adbbd305960230ac3af6ddf69e777da10bf76459eae67ded65. 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/DEA892200206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20690a61f81755f7c3a789d4709c73e2d051dc689fa58cc79ddfeb7b666adcb0. 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/DEA892200207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e28e951dcdde78e1b69ca9fad484d9bc5346d3561d3d3b15c370166522012f3. 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/DEA892200200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a26f3cb6c06a5c2807b24e450bd1f2d11fb3d2aafb0e28adcca92d31adb816. 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/DEA892200201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95dcd43255691bcfca15df5cda21884c0b5444460b4949213d790703f3b702cd. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/DEA892200203.