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 0x4fd212a35ceba2609fa8f4fc1aee5ae2a1800d5a7e742e16be6d5e67c06b1332. Chain 2 (Bitcoin): anchored in block 954025 (2026-06-17T00:32:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/383580f8-437f-4069-b6a6-912dd42e5db3.json and https://artists.proofprofile.net/proofs/artist/383580f8-437f-4069-b6a6-912dd42e5db3.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 0x6d7cde363ef16b26cd5fc06466125b33adef3175d5ae85cb4ebcda386213dde4. 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/DEC680100655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ab15eec448a12053621598458d0ecc67d7cf9cf8dfd9e904cd399f6a1ce3ae. 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/DEC680100656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5ff16a87b2e0f078206829db539728985aa27efdb49d3d4a24de074ae2449c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEC680100659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74891a36b49d9125f82c7a1cd6b4f92bfd9b312b1cf18ad49f5798a87b436faa. 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/DEC680100661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda727066b1fd517632a3e200648de2836a7bf869907bfe42a44c234de5adcf2. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEC680100662.
Für immer im Wahn - Roey Marquis II. remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e96a5bb1df8badad79dd7618b466cd132ace6a2e72dabbe3b96c2265ab835bf. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEC680100664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68ac0f7f9793d3ae5c488f9742f622f8048769045b8966cd68dc39f6fb8cb6b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEC680100665.
Ihr müsst noch üben - Roey Marquis II. remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65c1c9797f39f49b56ec044e56a9833fd2f5f56251b27d0e3adee0a540c8745. 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/DEC680100673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6321ceba91942c1eef9620e306e99ea952c54ad78ed3ff80a4f2a2a752bfddcd. 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/DEC680100675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3a55f4107d7367af5654c3d1f196e0c13758f92fbafa69895d262052736a42. 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/DEC680100658.
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 0xa134a39a97bc0c8aae50e93a74d3c60d0839fbc28cb940d9b6820a29d82f8072. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEC680200640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc884bfb5c9be4e24735ad9babecd571badfb37e9fcac96b9241e7642c60c360e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEA810200336.
E.H.M. (feat. Schivv, Pyranja & Tatwaffe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90da0d36246ed2073014f6284a99cec0a2ff77e9dcb752a2196488423ab76328. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEC680200647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136231a1b5d76868c11dafe5912ab4e9c5b14a782bf3afa70d2426cef4b4a4f4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEC680200637.
Klarsicht (feat. Breite Seite & Karolina)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828ecbda460ae442257d0259a41ff7258cf97d4d8c5f38dd3a8c7dcf61e4347f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEC680200644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ffa6608a9f077f5638a7438783f169fdbcea7693793025911ad7b50daf5e4e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEC680200653.
Aufdrehn (feat. Kool Savas, Eko Fresh & Jonesmann)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285fbf3cc4d285e6c2e1a5aa36458b69defec59ed68e679a1162b723d55b5517. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEC680200650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cc9794dc4d22f053974d46cc38519b94622b9cd07182ea96decc406ca202ed. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEC680200641.