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 0xdf1b698f918d1905d658f294d8486322529822ebf7d569ae4b8f957ef3878fe5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dba9d76c-a5b3-42ea-a623-ad7de15c60a7.json and https://artists.proofprofile.net/proofs/artist/dba9d76c-a5b3-42ea-a623-ad7de15c60a7.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 0xe3c93f0cb7383ce7df8814065970e57b108c36cbcbedfb5b2b43c9dad8fac888. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:23:47Z), 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/TCACO1688033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ed14c8e01257d889eaf39580b188e07f5a624900a877c5a3957f5ec38819be. 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/UKLMD1700001.
Home (GCM Sinai Sessions) [feat. Jonathan Ogden]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947e20f9b97c908af1c91547fbf7778be9d1a5923573649ebb4c2d588583f572. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UKLMD1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78440e71618a937bdc998c5715f865fab11e43066c96ed8bd81db9e3e74b32fb. 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/QM24S1820986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee87c528c9797cdd3ac0a1510f5051eac2425c8a4b8bc7c9308e8f6b37d606ad. 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/QZHN31978553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e8da751578fc7b60fac1d6c18b333292549daa81589f66301cc0197f8a4663. 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/QZK6P1932999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4b872455e1151d25a4c66901fdd8739860e672ded09c292f92dbd57838bec6. 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/QZFZ62117289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe320570babffb22dee6e39d23e47784997506054d5880aa9bca078ed2c54dfbc. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T05:39:35Z), 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/UKW3Z2201328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b605d87fba8efffbaecd4f170078e99005410adb4716246e97a7785efe52f3. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:38:41Z), 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/UKW3Z2201329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebbfce6d0236723e7ead18e356a387303b0d668879c8205f25c4ec8a10a8d19. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/UKW3Z2201330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44edf6b6a9d0fae7434aed0fe26f4cdc7657227458d34de677e2676d9cd58d9d. 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/UKW3Z2200576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de0903a066a61dee04b2838ccd3154c472eab60394469339b3bf04f3864624e. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:31:33Z), 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/UKW3Z2201333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf04594f7103f64b324b0c148c295a57807e40d43bd01b6869297fb718b10f2. 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/UKW3Z2301400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc157e5da830f56f8e972c3783874f1d9fecd1efa8e0f3bce8dd93661f863286d. 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/UKW3Z2302374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4b872455e1151d25a4c66901fdd8739860e672ded09c292f92dbd57838bec6. 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/QZFZ62117289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768b6dafc600298a7dee8f4cea3ad9ee01c4db732da5ff01968e310e18688ca7. 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/QZHN82002978.