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 0x1e23e4da1ce93c1083e309c1c9b16b4411e9348a6e49700ee2ca790fa1025c56. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/919d2e45-15ee-4193-a867-fb441acd96b3.json and https://artists.proofprofile.net/proofs/artist/919d2e45-15ee-4193-a867-fb441acd96b3.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 0xa149adf3ac335a423ea0861123c2f5831cb24b77ff80cc63f7bd1ff8820c6070. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:30:47Z), 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/TCACJ1552912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d1b68035a3c6158b66591e5a513062aa73eea7d7ec7f50ea2edaa1bd2b0da5. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:50:32Z), 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/TCACJ1552921.
Until We Both Get Bored (feat. Phoebe Bridgers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b3531e72abed3b85b2d7018aa3a1bf9cd7e1782a27e304d0602cd8397b8f1f. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCACY1779077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b65c3462f538553af8b2c1099d342217dc16c64b4a53a6fd5938e1a04eb2117. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCACZ1791162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef7f42fa05e389bdb7a7a284a2a03e2ac6834410b6f4c00c14f82042731afdc. 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/TCACZ1791163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5a924f72b570d5f44b1428928d74d0fb5f959513b1dde6b0b38b66600b70e8. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/TCACZ1791171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a28200c8ac7015abccb551fec8ed5c3a46b84dd50703471cffa9af94d5f277. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:10:27Z), 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/TCACZ1791177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6534d84b096e29595e192246d66ebda0cb998ae80e3b5f64de25f85b69986557. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZ93L2014595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb600351d8aff623f2fcd97daf0408b243ec0fbd8ccc7f7e29817304991e7af9a. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:05:51Z), 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/QZ93L2015466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0923234a9fbf55345b3d8e774af9e9665f091424134de71d624ffbfe44493b06. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAGC2213295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6f80b3b34694aafcb8689b2c2ded9ecbd2b1e60fb94c0ebc5af95cbd6ed9f6. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:44:33Z), 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/TCAGC2213064.
Falling for a Friend (They Owe Us Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf5fa9207bef90b454a88c36f0eef655b2076c1134781a39c8f838d217306f5. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCAHJ2345870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a2ef162925dac228e27af39b6abd46349a5d94189dbd5d7c6048e29d6a597a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAGY2337279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4c03709c860c83e62dd9cf1078c5ec3875df549a589d1d1dffefb33ad1354c. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:23:04Z), 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/TCAGW2332972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d54dfb2a236dd2101eadc27a94369dc876fcfde1541a717591e8448aa2773d. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/TCAHC2337669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7bcc6a8127c9ddfcb5f594cf19ecd94562a1a74998eabb522f2475d629886e. 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/TCAHE2351146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeec5edcacc4a5166021fab5bb014feceb435dcd7638b08a73fbdb0ae9a5d957. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAHJ2355318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1108f58aaeacbf501cb2656bb0a6a2c00e7e9dc784f71a8e22eabf93a69273. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAHJ2355326.
Daddy Cop (From the TV Show "The Rookie")