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 0x0e318dad516c57d814b76d657d1008bca38cfede364c28dc8fa7aefa4970b810. Chain 2 (Bitcoin): anchored in block 954058 (2026-06-17T06:34:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45aee2f1-510e-4a87-a9e4-f72c19e240dd.json and https://artists.proofprofile.net/proofs/artist/45aee2f1-510e-4a87-a9e4-f72c19e240dd.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 0xd7078ba422658ba099cba85d7ec79ab29199634dcf3b39dc019c57d222be799e. 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/US75Z1510014.
Give That Feeling - Paul C & Paolo Martini Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abd3cbc6b14a98a8d09a108d3d0f881f50b700da3db7cd7d31ec1fe4a62990d. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/GRLP11501921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d483534bc7c9a2590f3e9d792607a4a27ce68d9bfdb79a8d5e2f67c3f5af7f. 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/DEGL61500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1be698ea4eb348a4d6399bb1ab15a8ea2c0e33f6102bd2f4cf08acf7a8fb83f. 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/GBJAJ1001312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f91a95db7b6e1ffac38d3eff1b034aae8d4464aed0e611cc459a0a5fe083dc8. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FRZIN0000000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686ddac92537d78ffcb25c244f10e3041a633a828f50d2fc737f5610b89b32a3. 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/GBJAJ1400405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882b4337d7ee857f18ae5417d9bc02559f1c74a85ad3ab11b502b0363a844495. 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/GBK6Y1560003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fb2e997ea9f516a5627ea182d897cb9d4cb9acdcfcd97eb7617d7ac8dddcf6. 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/GBJAJ1400503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fff4a3025bcc71e43a026538c242815d81982fb54b91d2e8da3a795188a4af2. 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/GB7NR1514202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6092aba474b5e680ee4c671bc79c2f8f639d0af0eda5519c1588b6db5135454a. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/FR59R1531472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf557afd2b12a934eb664d0bb4f6c860dec5d32d8487e7d809247c3d5726a5951. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FRZIN9999999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8987b456d11ba74dfc7acfed9166e78054ec7272858420962fbce3c8721e1a. 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/ITK141401200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8987b456d11ba74dfc7acfed9166e78054ec7272858420962fbce3c8721e1a. 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/ITK141401200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc666d2e17c78e64ef0e7fdb591c913055bc722e0ed29a43394d5bb0ebe3c92eb. 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/GB0001400121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d65bea5252cada686b1045cb5c667317aac51f855324ed48047073a942a24b. 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/DEH740906281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a315aead8cd151c314c50a915501153713fdb9ecd78cccbc488445e6d4f792. 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/FR6V80846943.
I Want Candy - Les Schmitz & Oliver Schmitz Mix
Welcome To My House Party, Vol. 2 (Selected by Robbie Rivera)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45802c58a26195b647a401a6c1917d77fca76052c6c881ebd109aaa271bd502c. 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/NLF711704884.