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 0x572f5d5219d68313f5218e907a357de139e27ec9edc3493cea8b25f71caa7c05. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6c4f102c-4c78-4656-9324-b05d91ee7e57.json and https://artists.proofprofile.net/proofs/artist/6c4f102c-4c78-4656-9324-b05d91ee7e57.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 0xfcf96791343ca5cdae8d0f9645cdfc9661996ede9e07c161739b2f93e31f602f. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAJJ2504764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77445adae8278809982b8afe97819539e69fa2ac95cbbfde1a89ceb21a61d7a2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAJJ2504767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4577d297a36cb7b66fe04106b1dca571fa2cf5b74d6e38c0c4aea331189d07. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/TCAJJ2504770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba636a67cef379693702b9f4fece3bac0a08fe0fb75cbe13135e9e8b15bb724. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAJJ2504773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccb45dab260e017b483da0f1ce2f69ca267392ab06f5fc03260b80ea7e6bc56. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAJJ2504782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d78889883a293c8e210762be7a801de2bbf9a0c7834c17116dc54235357f206. 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/TCAJJ2504784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d85365fe8732f5ec70d5c64d833b0a0d0baa4a5e7b42a7039d472ccddd67624. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAJK2504786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506522009c4dc8e3639cbb6ba84fc01095472b5766ea518e491c9b09d8ae3842. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAJJ2504787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5232a512da47ff3d5c1f7c262229e709ae47b2fb1c810dea0d064b8a79aa85. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAJJ2504789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14aff06066938b5d216e1d743dcf2eb0858c48fb8aeaf248947057bb72b7eaa. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAJJ2504790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58099c6b3f60cd1c0d88253712f2536770da8cd599ee706738ef0bf004be15e. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/TCAJK2504793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ddaaab4df5f1ca8d9951e2275e64c4bc7bfb52fe36789f80f416764cf3878b. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAJJ2504796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc086fa39111ff2b6fab84fa6ed9b2a6cb883c1fe6f26ffb87065cf9d0eea76. 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/TCAJJ2504797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94011d5b32c95c9cd93d2bbd6d2274caa524e43fff4b96e4f3c21c193d12209. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/TCAJJ2504799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941093618011b601e4903fdd992b5029d28ad7b21bfc6cd221549e8b006d1b87. 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/TCAJJ2504803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abe4803f830028c7d78ddff6fcb5357a8143618b649834c9a0f56d88cb42d55. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAJJ2504807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabf4e3a24add22f8d8a9438c52976df480243f95e2f2dece80991474bbba900. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/TCAJJ2504810.