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 0x54e436bcf289cca04ddd5f2553c9f6f722d1d449ad1494134df936a86ea92f0c. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4b1837cc-19d2-4f7b-abaf-58d608b551b9.json and https://artists.proofprofile.net/proofs/artist/4b1837cc-19d2-4f7b-abaf-58d608b551b9.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 0x5a4e8564fd4c67c7436ef952d341a4fd31a3f3f6d02b2824208075843f4a07eb. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZPJ32178062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb544c96fce194948f7fc72ffda665e74928ef4a28bdb90fcabd3bec0bfdd1f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZPJ32178064.
Battle! Xerneas/Yveltal/Zygarde - Lo-Fi and Chill Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330128b9c34f3095d04dde676345d7fdd2012bb233a1a5f8ecdcc1f04ee2bf40. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZPJ32178069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bf8fa59c6dcd2c73a24e30e8536a718d32b6996522734fc9f216dab35a13dc. 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/QZPJ32178071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bd7cb1ccd36e60f3dfead057a9be0b15e6b689cf72f2739394ea9aefa0b8ff. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZPJ32178072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472250d44666ef30f220730a607035b12b2cffe259c39cc91c3b585e909c9550. 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/QZPJ32178074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635843912be58dd1c7e16ca11bb69f2f8393b9ff6fbc5421aeb12a61380d4abd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZPJ32215263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3bb0c71e7ee9a7d50892e7131de30b00a0423e74ad54384042333bc92ba089. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZPJ32215265.
Route 47 (Pokemon Lo-Fi and Chill Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49954e9ff1e8a7cb9f87ce4846b9ba976aba0ab4cc1ee41c549fdc7256568de. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZPJ32215275.
Great Fairy Fountain (Zelda Lo-Fi Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4f1668d9d629cab5b8fa3b777f95a4007f689e35ceaff6fae82f7447f84769. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZPJ32229276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7acab0250dd6bfc30637dcd27581117387846d58f2d2c5825ad49f7d75c0d6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZPJ32229278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2387bc2bd9a3a218941b4adb1f4e1f35b7a9c0107e5a05ff815e273c8087fc9. 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/QZPJ32229280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1e2527698566114a50991ec5defedd09715c51e95d78923ee99339980a85af. 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/QZPJ32236492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b80460aac871be64f97973c9ec246a6a5cd7485ef533a6be7ff1ab7c55dd3ac. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZPJ32262604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa913e393a42b2ea0bd3148db794b55ff336cdbe9207b78c68c3131cd3b97f64c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZPJ32262606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1e2527698566114a50991ec5defedd09715c51e95d78923ee99339980a85af. 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/QZPJ32236492.