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 0x429b6dcc344271794c014e7f638e02d7dafc0902938ffde443da4877005b8643. 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/b1795f83-3e0b-4638-952a-9b67e3538ddd.json and https://artists.proofprofile.net/proofs/artist/b1795f83-3e0b-4638-952a-9b67e3538ddd.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 0xbf17346534ee91282b58dfdc055bb98b4ebbf6c5065ef6be2b771cda3418fed4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SE6QE2362465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9feb36fc5da4e3174f87bfc6a296bec1888619002b46942325c483fa9f158706. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SE6QE2362467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73088b26f0a39eb3ea3c6330877295536647949689021550ffc5099bb8a40e3f. 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/SE6QE2362468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58377994577b7a0c94339799e0c4acc7da32625a2c426219a45f12b03fffe466. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/SE6QE2362471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5486fc334147e8a9cc9b245650f32749aeae5853739c1e7d032151f0e05b43fc. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/SE6QE2362479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ce8b365239279c97247097c3bfa5a74462dbc96a9c08a22ce88ff6bd7c62b6. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SE6QE2362480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe951a47d2b409dcdcff6e36fab4b902439bf7198af4a98751be3997776946bef. 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/SE6QE2362482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2397bb1827e3883b9615a7b85be2d8f033b5882f9b1806fe10bf00a9de7ad44. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE6QE2362483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c606f0259a3571f94323f121035de490bcd53eaabf0d866bbc8dfe7e030cbc. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/SE6QE2362484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08346a2f22bdf8d6e9f99ead3a042930a162fd665bcab8c13b1b3721df1d9137. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SE6QE2362486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953467d915936cdcdca858827a86f0baf0107ab92a51fa158c105a5fbae930ac. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE6QE2362488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf38ff10a932478733652e81298e0ff7c955591a97829b61a03250dfc82df34. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:11:03Z), 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/SE6QE2362491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d78828c771d5151358ff0577f2cca69c6aef6201ee5aef9454e4bfb8f6bede2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SE6QE2362493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5207dc5629dd1db42ec916aa70c8722db9e40dda5a3ac8ddd2cf59be50ffaa3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE6QE2362462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf17346534ee91282b58dfdc055bb98b4ebbf6c5065ef6be2b771cda3418fed4. 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/SE6QE2362465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ac2630ed018736a58828af652bc7208e75a48bbcb4d2c8751c440c481144ac. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/SE6QE2362466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeaf2ca67de00a42bbb3d25448f2859540f54aa46f00dd55545d11eced80fcc1. 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/SE6QE2362470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58377994577b7a0c94339799e0c4acc7da32625a2c426219a45f12b03fffe466. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:07:07Z), 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/SE6QE2362471.