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 0x66db7f2ca5f7b6b21e16179fe689e515d4819c553dacf0c36e6985606037e81f. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c036b91e-9a79-4cc8-b2f5-152c4b8d08bb.json and https://artists.proofprofile.net/proofs/artist/c036b91e-9a79-4cc8-b2f5-152c4b8d08bb.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 0xd1c320e627760ef932a40dcf592fdb559d746f7acdaaab0d983f0d7310ef8876. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USDY42210571.
Dame Fe Oh Señor / Como el Ciervo Brama / Cuando la Iglesia del Señor Alaba a Dios
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40dc939b4f9d9e3e5842d397ea2a635ab573788c5862c44ed6ad6a116d4487f. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/USDY42210572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc556e4afb3ee44ea9f2e75d29727d48e3f25c31fb8cade10256d3a59291ac0ab. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:46:21Z), 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/USDY42210574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b22e807ad290b957ccad97b6bcc98833ef8fc8288aaae0fb8477986a91e11c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USDY42210575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7eee0327bcf066b0c379604aeefeb36ef6dfcb92a849a2fd1c81dda547bd2d. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/USDY42210576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd235d45f01a6c2eb91d71a32bf00a308e5f3aa1918b8d6931648a74c1a7c1668. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USDY42210577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6b3722f0846550536551a7b71e184e0b49da5dde83f09e6cfba721c1b6842e. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:49:35Z), 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/USDY42210578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b2b6a96515f0531177e0a0b43d4ca52e7eb0d97ff9a16d9bb50964a66d93ca. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:38:31Z), 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/USHM22216674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ec6f945114a0baf63bfc66f22dc841b5d7f8db55a7a91a44c87e74ed5f526c. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:52:40Z), 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/USHM22287875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3178e5c5775bd3a6a963fc5021ba817b4d870555dbfe586ce97d625053683ec5. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:37:46Z), 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/QT3TB2418300.