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 0x86761605e264fb605a082e1fefe62568821e7717d677b528fb9c8328f378c6d5. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/746d26b5-1e61-4143-a816-ea4b91065674.json and https://artists.proofprofile.net/proofs/artist/746d26b5-1e61-4143-a816-ea4b91065674.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 0x9270de3e7dc1ac942e51e8f07f22d1de2e6c46b5259ef2690279ae5da5c1bf58. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QZTB82480973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1ddcae83fa782a6b1c9e8d07186e6883991167bc818be9123cb481baaa6ac9. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/QZWFQ2376836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f21c14901a0bb3c3d66ab094d840ecc94adab80b86a7db6ad592c903240f43. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZWFQ2376837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8196a9aa580baec8f57e95e672c729448aa2b2f24f4c66734d0642e5b5e91a. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/QZNWQ2489882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5e2ab4b2bc5f99875c7b16ffb7d972375f812a73f604e5dbd94bd27a9595da. 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/QZK6F2417547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1ddcae83fa782a6b1c9e8d07186e6883991167bc818be9123cb481baaa6ac9. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZWFQ2376836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8188297a86f2d653eaba9abe7bbf9f4b43bd783e731e9fce7bb2351eb93ae1. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZTB92414242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387154f783c2e297219747603a2fcfe4ea35b373d1429918d4984962bab44c53. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZTB92414243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cc5fdd0073b6b365cad2846d614858554dc622596e7bc13f5ee83633893be3. 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/QZTB92414245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da6e895d497d96cb72a02dc58aab96cd8a440f8067e54d710797bd86cc76309. 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/QZTB92414248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0ca219c3e6369cc98c121b9268999f711faaf64c99c7512f0d6c88960b549b. 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/QZTB92414262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb422473dfddf1b57ed7b7c64549b9cb9479c7b213251484153dfbbaed573ead6. 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/QZMEN2433023.
YANOS GARDEN vol.3 (A Compilation of Cutting-edge Underground Yanos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2af758d8962f518aa01a7f787c6d9bddb023f421682ae3e2c0ac16fa0df871. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/QZTAW2411173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908fb0056de4e75a2c5ad49f6327e1eaa740aefa2587544fadf09625fdd8b0a7. 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/ZACZ82400140.