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 0x2008c7825e7915034490fced0d17ebfb0c407efe5a43073efef6741258502484. 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/0498759a-55f7-494f-9be5-b66497cfe14a.json and https://artists.proofprofile.net/proofs/artist/0498759a-55f7-494f-9be5-b66497cfe14a.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 0x4216b1fc90d99b31a4a827ecfa37c5acd50a4b95e38d95d4d0a659cd002ca21a. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/UKXN22462560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81149f070fa1fc9e91f67a99e3cccafd117f9ecd5eb9483a2403aa229e8d2997. 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/UKXN22462562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd302a00686eb23e5986f7f908c76e75fc42ce77d30c4fbe5a25c3dae39286d. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/UKXN22462455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56367613bb2fee62eb13a184a88abe24dd3e005de95e3dd9e853f32e7a98b13. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/UKXN22462454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7902340c704653f5fa4e272b7712427cdce6cbc0be60eab55067533cd51f93. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/GX53U2379082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b99d9ae641633918b6e0cecab7378beb5a27f01d48273d84de2b4e7b4b99fa6. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/GX53U2380021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe201c2afb2ee83bf471714e2750b8e95f0be25208fc6844502156b2bd302184c. 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/GX53U2379081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb8222fc52809ab49b7a13e7e964520fdf124397a955eb1294db6b0ee23ab4d. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GX53U2379080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6759caf229a16585454ab7490166fd810c87c5dc02db6c8e5eec68340ebc7244. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/GX53U2453664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15da3fb3c8f7e77fc0091c9a1b6bf32a16bfdc0d63aead3760264ed0435a945. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/GXF9Q2404784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc9457214cb98b5864dc4449ea7e8fab78db23bdb15f880c9c54c7c8145d534. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/GXF9Q2404782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae59705ffd9f2627251e77d9449582601772184e6e10e9064ceeea8886f76c32. 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/GXF9Q2413066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900723d7be4633a2d2e2e702b4e8f52da340bdba4290611ca61f481808d6b7ec. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GXF9Q2404790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e961f1577c12f679b28cc174e3b640c66c849402459345ee50c70b06a5ae75. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GXF9Q2476629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f388d1fc55a5bae402cc8728264aa63e89f8bebca5fe3c40d6c4d7216bf5c23. 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/GXF9Q2476631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60f9d8f7901c775a5e3fea33822328ca11221eb040a14cac625d2d276497db8. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/GXF9Q2476649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2acb591a350f19d5189320be4ec0aae7b77bae05619929c8bb3d5da6a936903. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/GXF9Q2476630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedc3eafa8918faa9afcbe847e4a131c8a7e42ae0739b10ffe8cf5760aaca979. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/GXF9Q2476652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c3201ce429c23f7961423c17750b7298b287d5e242fa9e4135aa301d904216. 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/UKXN22509391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3d43a6eae592d1fabaa036940adc313f62b6bf190a6aebaa7fd12cf06a111e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/UKXN22509394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7497574cc07b81f40f209a6393c168421e32bd6560380001033808fe23a11b0. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/UKXN22509399.