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 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 0x22fcf5d86b82964c3480fef2f00639d7a0c69b49cb14ef427c6e88e88a1b55ee. 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/b1971330-b71d-4e2e-9fee-cbf30a27dcf1.json and https://artists.proofprofile.net/proofs/artist/b1971330-b71d-4e2e-9fee-cbf30a27dcf1.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 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 0x7e0ac1764ae89826fd3c36cafc7272a761cf45e54b8ddd9d3c140e455804e373. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE6N62207566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c33bfc967a2411955d70ad17edde4b6a5faf6b32fe0297be29da62e8903ebb. 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/QZTBD2311613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1347f00cd745bd7d8c7e8e7fa9d30a70e064aa08a3faa7b5ebb94a2e6308690e. 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/QZTBD2311614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d589abf1d9cc60b25c093980e809884659090b903c011a9df2c1cbb1eb704ca. 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/QZTBD2311615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc186bdd66e3ff54889a1bd401fa53babfd32a5d1d7ad92b6ff6f0e169df06521. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZTBD2311616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d1646e008316abc1a88981493ad9cd779c872cee579abec285155ba18ddb66. 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/QZTBD2311617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa3d9efecbae284696b8eadce61bd5fa3beb159b36636e7e4cd0cadb2dc1be7. 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/QZTBD2311618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220e5adeb34ce969a97c2b010faa0d7c3697db24284fae20bd5232fdc3db553a. 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/QZFYZ2239061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056dfea0024b57ea711cf9ffe6288fad2a51ee4122153869f922cf86cedc7471. 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/QZFYY2281073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451a238ce4f4acee582cef24af6c5cbf0c35561d0228061c6fb45a402edfbb59. 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/QZFYZ2239062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f646358128419c0bea5b54992693a4524653d5d6f5ce3dce131ca640c0727b. 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/QZFYZ2239063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f7d2e96e45420339d5e7fa88ab3f173248f08bee974d0879da8965a84d63ba. 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/QZFYZ2239064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c66119f08a69609c6b81e927980f235bcd02a2917a4d5d301cde51ec2c4c21. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZFYZ2239065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5aa6adb6c6309329261d174f1827e51eb8364d872bcb3454a98b8c21389637d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZFYZ2239066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17dc477260995da1622a70cd54067552836748a026fc977c1a8f88bb2e3d7c38. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZFYZ2239067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb85740fbc3e2160f307052c5186bcdc88d3f7786cd32d65456a5d36443da3f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZFYZ2239068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96eeb070dbd4902b585af67de391ecf3c61e2aca6a174dc74d121bf6de59b3b3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZFZ62161851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2690329f97d046a0aeedbc03dbc3e1f4031cdc5fd5321d01a2990d73ad94b7b8. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZK6J2084185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4a6f2f72fc9904012f96a615997424afb9260f816965e8ebae01b76ef78e3c. 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/QZFZ62161852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a2b067a33b755673bbd450c4e16fafccbe3c0a6f7ca57ca81c6765537dbeb3. 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/QZFZ52182507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecd3ede1ef77e59c9e5d196c03df7ff4cd615100cc1889af93821f73b32efb8. 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/QZFZ62161854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb969db174926407b8f0f149ed1c5a68e1ffbdb119c4bc7beb0d011545359358b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZFZ62161855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef579dbf49b5307dfbc0ec5bc7956efb2f7ee5a707f6a46173d8cc739dab9ac7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZFZ62161856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ead87b02e36457b39abde33c5717370b643e3d78efa9c25f4e34f9af523991e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJY2419431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d3b4ba2f23cfc0982c566035ff92879016dc2683f096e2fc517582419a9f7e. 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/QZPLR2487965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1495703ae9a520d0bc541663fcf17ad4063845c3fb1ccb1a7ad7fc157cb02b. 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/QZNJW2481320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d1968412a213e435b271f1fb0cebb89e40133e054bbe371a50179ca3feebf6. 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/QZMEN2219329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3b717dfaf0108a29254d7b4817f54b37176e7ea5516505f7041b0d3a8b4c86. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZPLR2487964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d3b4ba2f23cfc0982c566035ff92879016dc2683f096e2fc517582419a9f7e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZPLR2487965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ea95827dcb9dff8c214287931e5ba72a20b79465ee01c2b3d21fa21cb10778. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZPLR2487966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9fb4cb7a9b56d42989384445408cf01d1892d47ad66a75da5a8b5f3d77a4b1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZPLR2487967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534b74e0987f4c519393f21d5fa1c2519eb92032f6895f4e2a2845805b2a5f86. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNWQ2490398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbc0fd9f18e435f9ffb64fd0e3359044ebdf76cfbdebbd9de68de72c95244af. 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/QZPLR2487968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43236ebbfa08b113c25fcd58761abdf30a47662ef021e5238ba92a30a21ce61a. 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/QZPLR2487969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed18ee4f29b2cdce9f9b1097f04bac3a14b2a0443d76d3a5a5803339639a3e3. 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/QZPLR2487970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881f04da6976575de712e688f7695a9ab1c521aac8be205974b8de1963d33d2a. 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/QZPLR2487971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7018e9efb784af177d16191aa3bccec1ae358336e549edf0876dcbb91e451dfa. 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/QZNWQ2487969.
Everything & Everywhere Is Grace / Heaven Is A Decision I Must Make
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97286410296275deacb5ebf172607b327270dceef64c40244b2529e9e8b6c672. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZK6F2478588.
To every squirrel who has ever been hit by a car, I’m sorry and I love you.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91c66d569f87f7448c5ac6ae30c0bd426c99c3925573dc75982c7aba9f9a7cc. 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/QZK6F2451030.