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 0xaa14f027c93a0bbafcb59e0e241866506c4271a64f365c8c455d15f3f554c293. 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/18ef3071-22c1-4522-91da-5b4544f92370.json and https://artists.proofprofile.net/proofs/artist/18ef3071-22c1-4522-91da-5b4544f92370.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 0xcbbce589ab28663a5d910c70e2f4bf94a147c3c1f501716e2ea4eb99056d61b2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCABY1448224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9487c69aee2341e42a11d8438ce8174ba6a1f4444ab7a03f1b403750a5dc28c. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/TCACB1452660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc12ae330687d581fd28e18937c754997b5da5d6e6ff4b1cee143db422c16083. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCACC1446862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4293e859b78228d014321e7ba046637d284af28ab2d6e7c3017fe9e996aaf8d. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:26:01Z), 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/TCACC1446896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b10b19fc93eb11c8d090f7ef08a41c3f854d392b153bd74ba4afb190e7f9600. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCACC1447010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc397e498e9f3318b266cf44850755184ab8666005b8e0bb8207a4698d5b2d3. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/TCACE1503639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d92c5dfe5dd77cd191e131edf77f393bbd86f92758f213f3e129eda5da8a8c. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/TCACF1538946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627ea8fd3581a0bbdbacd03c0f044de453530e9eaef41ee1af4ed7eab7935d86. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCACK1561349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559623aca8d285bd62904dbd7ff67da55d4cd624dbda1f720e31f9dc55730645. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/TCACQ1694398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98423c5816740615eecbc58f3b26015367f7c506c46e3f3da96ffcbe478b50b6. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/TCACT1616756.
I'll Be Home for Christmas / The Christmas Song
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526345ac5187d3b09bd60daa3198b47586f64e54e8b62181b3eb4837fcf08f4d. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TCACX1731066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413f8f160c51831cd8f0233f6f383673ecc561edde7d6d17934549ec92411fe5. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCADE1784386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac647e25b304619b8c86a9eacd9e95ba99ae35e999691e13b0c1c64308609376. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/TCADJ1719974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce8bd665321ee2b177915d457b4a417e10fe8f058b154c85f2f954f6b6e10dc. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCADK1773891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5ec2d76f6da5d6b5e32a52c421c165eeb5897eb09078493748f5f29dd5d684. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCADR1885106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87af86dc24502a6f38afeead89fc3b8c4edd868bc1286b06d1c46754d6f6e974. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCADX1886008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda89b296ab1aff691ef7fa7946c113c9ebe0143e4ab9e2fae70f682b0a2e1185. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UK42F1800358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77327fc204e2eb15f88d335c70047bff1f867d20b2f454b2a8efd6b4b9f08b49. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAEC1970001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4335f508b8457c0c0751d8fd38542ab8747b58822d0bb5483534abacebf109f5. 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/QZES91973021.
It's Beginning to Look a Lot Like Christmas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d66fc3c13839f2bf1ed96142b07b08a1a9f4a600202ac089016111e4ead241. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QM42K2084240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2a8486f5502faea2ad0132cb5d3353ee936aa5691154f8fad97ab81182f5b8. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TCAFL2175827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3932498959f1e6465880a07243fbdeca2ac97e8b4fbdd14b65a12e0b43367237. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/TCAFY2147722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc74427a6c0bdba0fbaa7117417a7aba7c8c0c16a34a9463ae94a4cca29cc19. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAHB2344877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07b6a36224be51c320389b050ad8207a1d46a442060a501453157e5a5a7ba9c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAHW2440509.