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 0xe09a96f77f9d82b979c6dda9cea80d6ddfb3f883b903875e9cd16bad9d6cefb5. 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/43dd0366-8bf9-446e-93bc-cc907471a1a1.json and https://artists.proofprofile.net/proofs/artist/43dd0366-8bf9-446e-93bc-cc907471a1a1.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 0x352ab18658f9d5b95e75f0bbaa7a74f59e2e16a7d7caf133991eb84646b0236f. 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/DEPI81705876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f594860108c91d05852b8864f929f1389302f380def5c37663aeda4f276b6c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEPI81705877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27324413fcac299f524c2e5fa18ff4338ac70f6e5d865f925decbce221d32fb7. 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/DEPI81705878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2544dbfc28a62d80688c8d9bbaad355369808a59981c2c9c06e1ffcb08eabb4. 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/DEPI81705880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d8716175e6d6820edb49a81ff2eb2ae3f2719ed07ff23d5cfc956a7db317ae. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEPI81705881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85c9af3aa802991ca9abe12f3135def7c84ec7d8e935d8a308b5cff72651f13. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEPI81705882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf618f80e6dbde77020d4d6152d2af391b0b86013f542aef2d4d0ba60be41cc4f. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/DEPI81705875.
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 0x022cd24ac17d5305301b211fd3ebffe2d8b172f2e865c9bd1f9f671cf29ec17c. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEPI81705879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6dd3f2a9762d75f6119deebb48ee9d98afc874e655c2e67143ad5f2ef7793b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEPI81705883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bb6962e0e7cc6d7039965df6b47acd14ef05bafa532a8059ab92ceb77d33f3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEZC62349378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3eae9b5fc5395818a3351abf1071a7f4c38295f0a4361ca1e7081427d1965d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEQ021903090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e4a6491bcf2b535d1fd9c538839dc10af1c87e603c18cee426670c8536750c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEPI81901684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e40495a966288f1511d1ba6bc9a6bddf36ad96311ecce93ef07e60d62c598a2. 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/DEPI82101163.
Orginal (feat. Jay Pop, Florida Juicy, doubtboy & Young Meyerlack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92616d7c73ec657dd8d822b4abe80de015562dc721ce7b8ad65e32c01aeceda0. 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/DEYA12000082.
Möwe (feat. Florida Juicy, Tightill, doubtboy & Jay Pop)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec826725c7db660837217d704658d8ae910bed1db76ff9a3ce7d63317d2ec29. 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/DEYA12000095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ff3ba9706fe2455a6e16932f2d8c8383a75c3a93a0302ed8b9fbc2d6206ab2. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:51:34Z), 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/DEPI82108679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b7b24962261b4fa0157914cf4e9cb2271ac75e885cafdf356c855ed85d280f. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:12:59Z), 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/DEYA12000087.
Themesong (feat. Skinnyblackboy & Florida Juicy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac8ebfa31d463682cf0e8c4a66a13d0046a2d36cb9805e3959cc33b63d5dcac. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DEYA12000094.