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 0x77ee74267dd1d305bbcb9ec92e09401e94c98ab652df82dc524a94a24d06b5d9. 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/25536ff2-4cf6-4948-9636-8452399c0d90.json and https://artists.proofprofile.net/proofs/artist/25536ff2-4cf6-4948-9636-8452399c0d90.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 0x36ec5e7dde3b7ced52d55ddb24dc1b9949beea3e2f311245c90fc08e3e672715. 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/US38J0705801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bd7e569b65e00fbf37ee38b9151954af631d9c674629af97d4252709c14a73. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US38J0705803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef0fe70e6611e1296c1b0f1fca91789d59ac38cf902d486ed3323996356ed9c. 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/US38J0705804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1141240039dec942c493e40fdfbe61f8abab5dc98cf07f9bf1b4267bfaaf648. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/US38J0705805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce4f88147fa49d503783d0a3456e497c373e16a87be861f323d43e926170ec0. 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/US38J0705806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcde43171646d746818c8fcbe3ab93de3cff4b0e0a30e2843465800465d43a9. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:52:26Z), 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/US38J0705807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cff3a9c1e6c80eee7cea28feba37db8b23804b8e2aa894dd0bcafe2ed763b9. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US38J0705808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff56497e399816dbf8c3cbf5890d0d9c113fb441f39505a93adb3e74daf694c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/US38J0705809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f189e0760a834b04b1b62dc63483299564865b10bdc94c813f1eeae12462d6b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US38J0705811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a7a76a433b89b5d4c8d51233c0a8b8a636c5a950f809169aac5a7f077946ce. 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/US38J0908202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca93b9a717ffb2cb1f96abe3f5f02f09bf068dbbae2d2ac75fb9d5b9127d5a7. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/US38J0908204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d496e095c709ec751c209ddecf7e300a4ea8673edc1c6b089c78a6b12b571d9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US38J0908205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7e5d4ab62aedf9f79bb4a72bea6ea38f9490960a222acd155c66688468edd9. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/US4E41179804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c2eb77b0274a92e68577623faa743cf93eb66ac0a00941991be4740046dc8b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/US4E41179805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268a64e87dfcf5642380fcf37099991447a54c30eaedbf9fd6342253690034a5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US4E41179809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd838cb2feb9f459bf13ec5a429642ddb46923b411ff59731bda5fd8d14c15c. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/US4E41179812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e034cfbc2a60f253f9f2514a067d34317ea08b3476aa189eb18de0f5720467f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/US4E41414807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906d22f628fc17c2ac57c2b40cada245c55a04caa2e346bbe9c3fe4507b609ba. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:01:26Z), 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/US4E41414808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3573788c9fdbf3fae1c5bf4dce837ef190c65c001cad4f602cb91f38ddaa40. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:29:17Z), 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/US4E41414809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61063d4b634b5f802d0707adefc2674e9e8baac9efb37e99222528e540ede2ef. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/US4E41414810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae8f33ced245d1f349f51ab5b037be9ef706b8942a55d1b234ffedc259f6209. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:25:27Z), 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/US38J1816504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba95f60134f6c585e1059edea17561630a0328b6cef947e97da4a89bc93eaffa. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/US38J1816507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34795ab2e76560e939a095ff8b22145adf26fa257af28546e4cce533634db59a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US38J1816508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e11f1305e05aed388a2c330b639414a4b3dcf5c96580cd86285ded9a2f62dc. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/US38J1816509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e9463c0e804f92f4af2fb6f1f3fffd691be628b414953ac2f45458d0510490. 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/US38J1816511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5fe581d6ac775850f339073e51e9600700864b620eff072d5921391722aaa4. 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/QZFZ72507624.