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 0xba68bd93cfe897aa3e677d157a659251b688377f356e0da5876d47b40d35677a. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5a23eb5c-b66e-4544-a756-a998255b68ad.json and https://artists.proofprofile.net/proofs/artist/5a23eb5c-b66e-4544-a756-a998255b68ad.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 0x9fdebd3467690a87f90635cca07b91f238b66c07f65922dde3d92aadee768702. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/SE6E72000109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7213b3b501e1d1f20fc795d45d1488d78905b8e1a32f61ff647968674e0bcc. 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/SE6E72100501.
High On Love / Drinkin' Wine Spo-Dee-O-Dee
I'll Hope I Find Love Again / High School Confidential
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31315791ab36eccf014ada99e7868fb0c42462a560b1f12803418ce31f433974. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/SE6E72200701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820b707968706a9865a08c72068d6d4e62f8874679872e4622f579e1cf03ffce. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE6E72400901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc075ed1feaaf4a4a201faaed9c000dc8ac1b3424fd2ac5cd3697d7ba85f46f87. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/SE6E72401001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58b73c696941563896456f6f05392a925351b8446d400013a6f66718b54e3a4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE6E72401301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27678aa1032fe1e0cd6771db3f86a9f32b4ec28bf6bd14b85fbccf9485b6c1e. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/SE6E72500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f68c3e046f9ac7d04dc9f7be466f98e36ace29969572b55813a9e1da5d52f24. 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/SE6E72500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cd7994478d23c1408bd424e7124b645c1bb3be7b45d44c5a1e14ec64d7c325. 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/SE6E72500301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1346fc90e0c85b2271dcd1dca695b72caa82b5f9184b15554225acf7e8c746e2. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SE6E72500401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e432eb748cd1e639318187bee401545f8a1437c78a57598431ffe6301de535. 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/SE6E72500601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11bd688a366d83a0902fa4987690c90b34ca5ba95d625fbbe542b20039012d6. 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/SE6E72500701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401fb218241d802a8740a9ea8a516144f7df1486b271227a5d5b8c4e89ee4a72. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE6E72500801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d45b5a3c932c4016a1256e7fff61f17003b8c84bf7c68640ef19d7e716e8b1a. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/SE6E72500901.