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 0xb8f406a698377ab03ac31d96c396943d2810705859e0427dd8cef4c6526d8f43. 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/6522bd67-d06c-485a-b8f1-57b6b77cc9c3.json and https://artists.proofprofile.net/proofs/artist/6522bd67-d06c-485a-b8f1-57b6b77cc9c3.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 0xdb01b1d8cfccb336d0bfce63f62b4f859b8071bc6125666155cb9271cc91c33e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEE862100937.
Mit dir gehts mir gut (feat. Clair Dawn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218422dd7f50d685d3764cd0a52f8678fc3ef7b5e37febfe67f1f373b6804a7a. 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/DEE862200492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364e03a51cb31301e628422ceab1e60799a317a3f1a8efd9b8843bdc8b5abc53. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQ022380918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c3e33c7e39603f53cb5395ea0d74030741529de24a9e662591b2e51ea05c14. 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/DEQ022371811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce7555355e2018212f9bd0fddd27717b566863ad6a9cd4a1ca32fa7ad4abfc2. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/DGA0Q2326632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc634db23ec5a80447e78e1a3a66a0346bae4f5938ef96f54b421f51857cd3065. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/FR96X2476344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3334af7b54fdebdbc3357aef7f34d06dbdc7aa1a3ae8c099afb28bc0bb58215a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/FRX872466110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9106d85d31333126e685669b0d59f4d71d90713e74d5978ece269ea35b097d. 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/FRX872466111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2840d24ff0cb2c6439a48406d9653b0716ccd48aaf7b031e3f6683fdc12c7a03. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/FRX452432052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc634db23ec5a80447e78e1a3a66a0346bae4f5938ef96f54b421f51857cd3065. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FR96X2476344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3a5db25aeb1a8f565a9734bcea51d77daf05615a1f5e4024d54988cd5c1379. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/FR59R2419221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe3e443d40d32b319fc34f92f78a469f9c19d9229cf7ea8efb93625d528e69f. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FR2X42437092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce7555355e2018212f9bd0fddd27717b566863ad6a9cd4a1ca32fa7ad4abfc2. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/DGA0Q2326632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820c9f63053767933b7726ec41b1cb15adb1859cb8901a92839ff55fd7b59e50. 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/DGA092336903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10762f6f99457b0d924e6ab3ad980c1225bb4ddaee1b4e03499e494de9ec5c9. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/DEQ022391167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b1db16d04926ad9ea7b1cf0c4fd2559d5d8e9656ce148c38b734a4df1d5bd2. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/DEQ022391023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06c90f2a162c26f7d341ce328c479fc3ff1baf18dc4eda9ad6a473c94d19947. 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/QZFYZ2587526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3988d9dd425dacad0a8704312543396a9362721af77623c90974aaeb430cc01e. 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/QZES92587234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d4120799b1749bb983eb7f55e54bc64c475b53cb22b7ee5e62e025e8bad928. 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/QZK6M2532219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1622246961a57b0fc45c667d07d6b7ac84d963859ce7eef1ff0933af6e3791. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZNWS2587755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5cadc6903cc2bcdcb140cedb10b67b78be89e9ad3a11c7b8903d7721d56b5ad. 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/QZTAX2592043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa955268f94356fb366cc39dd4f6973c4dedadc5dcce07e2c96d7332e94bf95a7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEUM72411662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa955268f94356fb366cc39dd4f6973c4dedadc5dcce07e2c96d7332e94bf95a7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEUM72411662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa955268f94356fb366cc39dd4f6973c4dedadc5dcce07e2c96d7332e94bf95a7. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEUM72411662.