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 0x4088cbc7b7a8d81bcce983ed8416e35ef7563807950a03fcd3cfadeb1f5bf9ec. 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/c5d1cf81-9aec-46e0-b74c-f7c93bfe194f.json and https://artists.proofprofile.net/proofs/artist/c5d1cf81-9aec-46e0-b74c-f7c93bfe194f.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 0xaa9c1f0102b4a8a1552dd53468cff5e2bdad7850f25ecc3ec75870212a41f38a. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZES81993476.
Toxic Love II (Tell Me Where I Went Wrong)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a827ea5d3c9c7e2addb271602abb49e9595dc0df6e0698cd36f0c83db28163. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/QZHN72209706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339a69361519b778cb858643c30f9b753782becf0fcd44fa16ae37044cedce32. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBWUL2346403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105a4a4ba4a7c178a463fd2979ca0a45990fca1af93b926caf619872aacb63b6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTV32345239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc551c75af8f98a7d72b9f8f16e0a2602ea3ef08d086ff37aa02e9726a08ab8a. 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/QZWDE2382022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe163922d52638f710322782f8fcc16eb48d2a8715fefb32b949d3176950b8fa3. 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/QZPEW2437644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c1a346a99efc681475c446b9d1bf2a2b482454febae07bb5a18734f4e16848. 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/QZPEW2451431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f16f643a6fbf4d1e600aff60c16c4f90381610acc07d7152e56288638873d7. 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/QZPEW2493647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb552ada58ae15247e1ca622dba10ecaea51dec3a2efda09b386f7e5debe3f4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QT2VB2439335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53597a6e0cb0123f7b89ec4efed7d15cd72fb31411a296d649bff4b38346ee7d. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZVEM1872061.
FOREVER 21 w/ MISS LUXURY - SPED + PITCHED UP
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b63644532e4e02babe9a05e98f91697e09096a729e10cbad9c0a5c3fe2b3b48. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZPEW2516999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fbee1ad7e64aa25de2ea6faff2871bd46c87918b692fac600e03c63b39e088. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZPEW2543474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940a396a81cff9d8a13c81e8d071bb74edaf9096d4a96430651fbabf361bd9ca. 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/QZTRX2395725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bb9a8c8862ef61950c25163441b992191e1c2491711df310a6a713b7c735e8. 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/QZTRX2395727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8a4b659336ea901e1fb9c6e8422526e2e9eaeeeb78c7f85060e1787727d4eb. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZTRX2395729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339a69361519b778cb858643c30f9b753782becf0fcd44fa16ae37044cedce32. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBWUL2346403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796a2738f5d980e318c0b810ff1c7a7caa45b676da7ae110a2bd4a8cab2836f1. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZTRX2395731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed557547434fb4aac227201b764e86a7b29a58dcd92b83194762e5fadf25e40. 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/GBWUL2368524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8832187410a40e6b3adc1ef95b76b7ca60f3a75b4398d1a4862d158560c5df51. 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/USLD91749340.