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 0xa3ce99aa4591a41c5310b7795d61d456efcc76e97e6f8c8811907740f4270d9f. 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/5795e1bc-1d5b-420b-9fa3-8cf456d996d5.json and https://artists.proofprofile.net/proofs/artist/5795e1bc-1d5b-420b-9fa3-8cf456d996d5.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 0x8e9bc10530a4d1cf18a662c22ff8af8ce58c264d45b35c4b3480df2bef5e1a6a. 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/USASN2101213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a243d8f6ef19c5967e536c218713b2925ebca0eba446c9d390ca10ab3f7d29b. 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/TCAFW2181999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2370695b79024fe0d1a58755b9c65f24a4facd64055a703883509e4601e68694. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:11:11Z), 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/USASN2200176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf11ec44d1cfafa80180dfb23a3c66e1d0a77006508ec8cbf8ebaf7a94e42240. 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/USASN2200527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8d20ae67e363e6a2e723385a5a98fd3db128c2f18199d14419c54bce64e82e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USASN2200528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfea0e7f080a318f4dbbe13c98a42f58b62140dc65de85536dc8045b865bae5. 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/USASN2200532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7d77f94b2a66c3f94feaaaea4fe59a42a5c435257a313cec92196da8b4fb52. 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/USASN2200534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65eb3ad0d017b4563e2ae28b70394f1ebb4c83bce6bd45fbe56af512fb1cda08. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/USASN2330197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba9e2c9c67f33450f967f24a7e502d261da6b1c7d47319540bbe4beae8312b6. 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/QZNWR2309751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcac53082004a242248805845e519ac4f189b16d40b566ec047a4f7be4a22ecb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USASN2300318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c59870a271be6de367dd93dfc4bb64f6e7717c8a47bb331b6d8c8c4f895906b. 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/USASN2530060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41341a514ae0408dad58df135c16813edc5aac6e2b43c8c64f5ba491762e4e91. 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/USASN2330436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc49b6ff38143abfab030fd29741eda013bc13fa11f6d46ebdacac92475dc09. 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/USHM92217784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2f02b9c7f46ac3c6868544f51d41f3439f8d124f9de47381dc18ccf8f3cfd3. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/USASN2330117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1232b9e30b776e1aa672cd0f9ed749094d6f5d6da94bb458656f3dfd37ec6a. 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/USASN2200458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf9b509ff028996f3f8fe9a50fe9f6608fbb56d39f21d96890e2d3ae3a6adf2. 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/USASN2100979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1278da8f3f8309718cd231f1b0786520c3a7f8a641ce3e12de425a6f685032. 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/QZHN92388713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abb672a3832b506d34652bd5a178de3762ddd59ea2f3519e8277220ea83825a. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZK6Q2333626.
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 0xf9c157184b07a36f399f04d5374e0fb97fda8d87286f874bea71e16899b49001. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USASN2330111.
Love Don't Live Here (feat. Trouble Kidd & Young Uno)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b42ea03073e768b930ccacd15b4ad0e6ede9ea694340fe71d64cd53276b616d. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USASN2330350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa944f9bdee4eae7362d016a453e2af8515d3f1c504272dcc47579f2cb54d9225. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USASN2101252.