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 0xba0632a59eccb506e40364ce5b681afaea4f2f1d91e370f551908379fd49e7f6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f404fc6b-c7d6-4951-a3fe-3e8146846996.json and https://artists.proofprofile.net/proofs/artist/f404fc6b-c7d6-4951-a3fe-3e8146846996.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 0xafdda656b81d48424f47f687d747eeb5fed4ca132887d04e2ef3d86c5726b6c4. 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/FR5R00910463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095d67b21ddf04c375e7ddf07bf752931314b790aaaccd4c69b3f722e27c1527. 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/QZNWY2099363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4391967e9f15866ae5dca89811f5b4eefab26c80c550920106f40606e63de0. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:32:52Z), 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/QZMEM2216092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17590dce5bb7c120e26fc5c18913a444138ff272f64b762600d97db14049db5. 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/FR9W12204827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b013f21fec2d392fb30cd4e2340272f81d47a15c1d8180dab98df2a91c6410. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRUM72100597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a3116119a34b2327129c1616eed81fc172c95979fa05567affa25ec226d188. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRUM72100287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f7b034377ca88bacda4f2311b76b5b969e75f763d4eb52ba74934dd7163a00. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRUM72100598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4cdc1bcd8f8251050257f6b63e16c153b7e1418cf556f4f0897415cb645e78. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FRUM72100604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3173c8cc4e309bfde6094da351c42db2dafaa29c1f2f8a585ceae02099e02048. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRUM72100605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892d9561081fec1453b2c97cb57e35dab7dade9b59868ad9e52f82afd2502a02. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRUM72100607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd462c6474b77e6fb8d0b0ffe780b613d6e126c508c4206947fa08d657a10cd48. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRUM72100609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3b82cdca202e497b916912c242a1ab34913eb6eca377332e7c52f6d18283c5. 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/FRUM72100435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad9de7a448e50214f8acb593245d2537a0d9b3590c075bda95e65c05c7c31c8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRUM72001848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e23d03949864d3234b27da581b67a8a79128c15f80930fffc0f01d7cfae1448. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRUM72001362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17590dce5bb7c120e26fc5c18913a444138ff272f64b762600d97db14049db5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W12204827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b013f21fec2d392fb30cd4e2340272f81d47a15c1d8180dab98df2a91c6410. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRUM72100597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a3116119a34b2327129c1616eed81fc172c95979fa05567affa25ec226d188. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRUM72100287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad9de7a448e50214f8acb593245d2537a0d9b3590c075bda95e65c05c7c31c8. 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/FRUM72001848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e23d03949864d3234b27da581b67a8a79128c15f80930fffc0f01d7cfae1448. 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/FRUM72001362.