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 0x825f77f133c5665dd4c9897de089c5972d84f8d09c5986909289fca1c3b3a8b9. 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/6c2d7c37-47ac-4add-ab49-41bf73a7f2f3.json and https://artists.proofprofile.net/proofs/artist/6c2d7c37-47ac-4add-ab49-41bf73a7f2f3.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 0xb05407a32527114334710869a96b33d552777fcc55bc03d4915febbd1a207cb5. 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/IDA172030038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962582e4f450c05b574279404f002601bb97fe91a61b5e67f27c922ce4c2e395. 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/IDAA22001043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41645880cdb247b6ed9ee2352f6ae94dfd2f724d63fe4357c118d09c1f43f20. 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/IDAA22001217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29945ff3b71493c3fc8536d692732668e69c82e6863b22613e9224871687572. Chain 2 (Bitcoin): anchored in block 957541 (2026-07-11T08:23:18Z), 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/IDAA22100121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe860b5998ad89ac1cb36d9b3920ce8b4a03009ee15d573bdc48191a72204efdf. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/IDAA22100439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dc0a2f7e355449a46a5183e9e21c2b6d6998979057b7e866a11ae6b1140254. Chain 2 (Bitcoin): anchored in block 957541 (2026-07-11T08:23:18Z), 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/IDAA22100077.
Kubiarkan Kau Pergi Hari Ini (feat. Rio Ardhillah)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69dc2d54ae75c292ec725d094256a6fef9e741c1e731b21e7f516d029184a402. Chain 2 (Bitcoin): anchored in block 957544 (2026-07-11T09:08:48Z), 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/IDAA22300225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb429c3f51b4092f85485c2822436b86f17d799176b75255ba9146234c4d82f80. 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/IDAA22300290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f7193bb9d5205e8dccfb6652e76d0d21986d72085ea5ae1ae3606a2281da16. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:43:32Z), 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/IDAA22400164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206b0b8dfc3700c186ffdd5abae7abdf070765b4ffd1dd4ba78a2650475eba69. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:00:38Z), 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/IDAA22500166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05407a32527114334710869a96b33d552777fcc55bc03d4915febbd1a207cb5. 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/IDA172030038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd3ce42def2028dd19ced3f8153b18670dc77982916e5d15d39d4b536b628e5. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/IDAA22200408.
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