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 0x23836713edcb225a8d634fdcd9070e7246f01ee78eed02bf63e9372447090746. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d8497fa7-818f-41af-b1ac-ad531281e5fa.json and https://artists.proofprofile.net/proofs/artist/d8497fa7-818f-41af-b1ac-ad531281e5fa.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 0x9f6eed4c7f501d8f19b9c3c1c4ba96ea57dba17c19e44512f88f699ea0c92997. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/ZAE080600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7c5015359122dc061f4dae5a17c11c6c19fc9a84bc4a2c72634c7bac9ddcb0. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/ZAE080600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabce3add1be93f52044d70d52e5c3f531e5e5c6998035948b11be316955ce850. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ZAE080600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e017635b7dea4ebfecd17924826ebf02c0b1913642fced951d335db4acae58d. 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/ZAE080600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b63956cc6a528a6b6953073596bd72fe27398b0d485eb5eba7fd7204f7ff10. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ZAE080600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824e8613a1104c0b532251c4c45b7938910f24b64098510313d26c1be1abe2df. 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/ZAE080600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1c4f0f1d16c202b0fb8b01f5cfa80e7e66e4a9b1eb1c7f0868da8788f4daed. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:06:04Z), 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/ZAE080600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d1b1d07fa3cd5c81b3351210671125396d6aaeb7cc3dd6e8c95e005436cf9e. 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/ZAE080600064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad3da3711185a8c50ffdfa787e6394846e5907988bdeab82702789c6c368dd7. 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/ZAE080600069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04e7f80d7be8649f14fd6da2e43b7b838878b0a367955d3aa26447e95abd583. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/ZAE080600070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8094b83841b4e5de0c39a05b33e9146cc28100f39d03998dc92351190c0a90. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ZAG931100090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3104c37ead3e9d1dfd480033c01bd523e9393a0bc4a5761ab316f274e2fb4bdb. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:39:15Z), 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/ZA56E1401640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a21a62e4dd3fba4a39c1c473fb090d1178acc938455434fa3ac0b2d92c9a99f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ZA56E1401643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681fc9769753a52cfc60024a9adcfdca4c79a3dfd4d8120963b4df4502371622. 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/ZA56E1401647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed91b171187c5226df7f90c26980683885ad2b05d46b620446598512549b887. 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/ZA56E1401648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe627b0f79414dcaa35a324b7e5d46a1ae139777cd810b57cce2a20f873a17864. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/ZA56E1401649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad6efc000feb757496d70743295392110e243afc42d79c77501f67165d75231. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:32:38Z), 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/ZBO732400401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3eb5a6ab8385607c28031488eac3de4ecc768fe6cd6447d108e10bcdb7b94a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/ZBO732400402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f279aad8e0433c5d8376a4672d56973de11009726a25f73682bfc463bf91bd. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ZBO732400404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9694d787f0b03cd8039fd1e416e7f6610b8f1a8c99b574f98ced906f9072706. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:48:19Z), 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/ZBO732400405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a16033fff1d1cfd3527ed6f4c98c74664be44d6d5c6f2d8daef0fd545edff3b. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/ZBO732400406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9660bd3f9690407f4fae8eb81819341a7af0812acda53b51aa1f98bce99ea53d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:29:15Z), 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/ZBO732400407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c51ff6c003d38dc9a5bb339a8e48eab760b9161662e64d5bbc267986836d28e. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/ZBO732400408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15c40183a6a48ff0481b2ee0ccab7265d6c97256e6638ca019e0ab95a51e3ba. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ZBO732400410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f12c73ee21757504b5d0990a1a529bf4058217333a6d8d8e2df233c1c60252. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ZBO732400411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47479890c7823a09ae0d97a4688572035ab74d13a48d9e8f9cd2308cf79111e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/ZBO732400413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac19daa24fcb3841bbf241197f8b03eacfa47db68cfac811082aeb30fc5d7036. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:25:39Z), 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/ZBO732400414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fd013ee524514cd402a9f3b17136721597e59669d513d54700d3eca740b174. 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/ZBO732400417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f74c8ea109830d806137288562532db5b53ab290d591708a221665b10916d07. 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/ZBO732400419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432871eaefa7e330e42866e96f0369f32d1b9c9832bb14b499e1c6537deb91b7. 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/QM6P42370585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d04cda0e93c6f67ab209a63b0c32ec512cc2b18068d9127dcbe627e2d9bc3d3. 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/ZAA641400257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38581d9340d9a87365fbccfccb6290bcbf582e1889749735706bc2eb7a02e57b. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/ZAA641200321.