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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4eb5e7688c5d820ea9ba77db7650f7aaed0f8a0aebde4e91d3471fee015ef8. 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/20dcd8b8-87f3-4114-aac5-23760b829518.json and https://artists.proofprofile.net/proofs/artist/20dcd8b8-87f3-4114-aac5-23760b829518.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd0f746af71081f4678dbbafb890094b0023ebecde31fbca10ee8c68b4045d6. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZHN81966057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3600b5f1b02171e33395884ee8f38079b8638a3a91b816a2c1abd189c9058d. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:20:58Z), 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/QZHN81982788.
Strong Like a Rolling Thunder (Live Acoustic)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d86a66ee72a875127910dc7e26bb7bc012a6bbb19f6c7c350693e11ff9ef35a. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:20:01Z), 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/QZGXC2000121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371db8071dc4a9843fa0943e4b5f3357acd030f72b5fc367123667873abe208c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZGXC2100312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8643fc16cbaf865249b285bf271eb64007c1f1e913a6f68380693825e0d9308b. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZGXC2200083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0161bc0b9465a4dd3f89d554c522c26415f014b2ead08aa3cbe6a944ad096a3. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:49:51Z), 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/QZGXC2200533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dbd4d0cf567c7490a01f1acb4c4bc18839ff4cd559fa83f786ddf0b2c7d8aa6. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZGXC2200536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fd008c6303567b84e6e399ccda5f5f3767d501ca88b468aafaba0b6f5549cb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZGXC2200539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4832c560d604e39a135713bc5781eb794b3df3856329e4d8932e95a14975d514. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZGXC2400903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97e3ad084c8aac63b753f0d61b0f5ba8d48b0ff334a16ee054066e2f1736e09. 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/QZGXC2400910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0521c827d3488ff3a671f3f58242e54e947e2e4eb9bade24464a17eaf5470121. 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/QZGXC2400912.
Eagle Brook Music Christmas, Vol. 2 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fe756253151a5c65c073976fbec53e3c9879c38765aab67b69514756edeec6. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:59:11Z), 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/QZGXC2401375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a501aec3302300d45c5577f9f5e79bc39225c6f9c286d7c35ff5c92ec0ab70a. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QZGXC2401376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf486a7d36543b6d7f3f22473d5f5999697e8ce9c4cbe0cbb87255db844faf798. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZGXC2401377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e89ad3430bc5f8619c3b4296d23aa1f1b7997a9f0dd994e928e58dda763e237. 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/QZGXC2401378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37fe160e58045f4eafb01691a259301700466c6f7682d6ff64a1198a82acfcd. 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/QZGXC2401380.
Joy To The World (Joyful, Joyful) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d8e7d085129dea36b68a2e39b3c2170c48eadf1ee834ca5e03f87af3c9e361. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T06:38:21Z), 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/QZGXC2501102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05adbf156d139567b2f58006bde46eed0b7aa5bed75266d91429c35eee77597b. 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/USM1C2100120.