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 0x34cec2d2c7d20f8201d128983010c2335ccbcbf39876bceaab9a54d3beddf239. 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/f70342b5-b6f9-4947-ab88-6d31c4283774.json and https://artists.proofprofile.net/proofs/artist/f70342b5-b6f9-4947-ab88-6d31c4283774.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 0x3777e626887cf7835eb20c4c38f45015950c5138a865294e2a285ee02e3208b9. 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/ARR4B2200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96287ef61a9456ff71940f09107f87f0d11c8cf92ee7b90ef549d9b7480da81c. 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/ARR4B2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410fbff5129fd48d965a904d6644002f12f3025c0538b4a5295d3519a2a5d8ef. 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/ARR4B2200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241a0afe13e7af2608c48bc530d4fea3fc4647ff382f7fdff2f2e6f22fed47d6. 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/ARR4B2200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde512900cd6e37b4aa3faf6eb0379c9a565a3873dd013eff43a19d35c342b8da. 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/ARR4B2200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bfe3ee394191a5fa21f644089ec8e70890f02ac5e2ba3e53d46f22c385070a. 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/ARR4B2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc626e78e62027653a142e65387b4d2700572adb110b836d49ba841cdb4a089. 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/ARR4B2200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf7cfcbef96d5d9d27b7908e87d0fbf14036a13daf29acbbd7fd3430254f624. 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/ARR4B2200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17161821ee8ec623419238ddecf76ab49cd251582789328f27f875ea8416380. 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/ARR4B2200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3006f86c640bbe23d1c3ce96454641082884df570c8cf89e38eeeb055306ae. 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/ARR4B2200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c73d73106ff9ead8c55be015a17b4e1938ff939e207d05310af87b13fb1928b. 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/ARR4B2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa12bc64b5b322e1a6c1ccd8b8e18db4d4be550b2a845a4d21037ae4a5f37a07. 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/ES71G2329508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13781ed7308dba0e126ae1c6fa1297757d8ca97730595d3f3d87557543d6e925. 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/ARR4B2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989c83008be8f8ade1d9c30790259bfc04e708039f8d1a0f615db3699e851c4c. 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/ARR4B2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c37713820c3500726c65f90d03cd0792ec5b127aaf48215362559ec791553b. 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/ARR4B2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693ff324ae335c014c9d7caa6b074bcad12c5a8d70c5f11d009b5e05f3cbb92f. 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/ARR4B2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10686fb08fcd2afb13cd9001063e04e4a84464fc5d65a670cf04a230baeeeda4. 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/ARR4B2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c73d73106ff9ead8c55be015a17b4e1938ff939e207d05310af87b13fb1928b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ARR4B2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96287ef61a9456ff71940f09107f87f0d11c8cf92ee7b90ef549d9b7480da81c. 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/ARR4B2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb0931821c1a0e572bb92a37f8947f4ec2c5bcd0f4f2265b6f88408322658c8. 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/ARR4B2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3751f856f9368856d36f439a848f24aec309a6d212f9f7d4235c0d4943bdb69. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARR4B2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdcdb13cb1bf50821cbbfad2d6a44688f4f38607562284d05d49484f4a360b2. 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/QZ5AB2181155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73399ad313eb9df8041bee7ef8f47fa1ad12ee5d623d9968f522822cdb559bc5. 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/CA5KR2114294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf15c216fe5034a31113d3ca1f7f3253cef289640758272899c581a715988856. 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/QZNJW2006960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ccad433515e48957926b0153dd3b53941faa5d38f3d009660ba2668633761a. 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/QZHZ42047287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb878255ad73caf56daf93d735a966f22c64e126c5916224620210029a6badbf5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USDY42094918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab979f7f7fc903b68c7237a8370a62395c98218991f5ff721149f270712b9ab9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZGLM2060149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88020a40261d9e6f5d5edb9952447d6b87015e1931abe3aed179fb06f659ab3. 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/US7VG2004880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3616ed60331b68a44956d4a9b6e769f4314b04f9cc76614ce2a38e7bfb4f6ec0. 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/QZHZ42079179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3352c46ec44daabe7fdf090fe25be609fb5c9aa6648d0cbbea2843b92ca17b64. 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/QZHZ31995537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b2e4d6e679a066a0bcace65a3434e8ab4b74f90477e5d1f0237d4b4c40a330. 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/QM24S1843578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423020e130f8e56bcb0fd4b9f44c0f3ad01a02b1807d72b8e1eee4faf44be745. 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/QM42K1909980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0453f3aa6e2f0049308bdc2fcc26b0321e3b3a92775ba43cbaed980a41fd04a. 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/QZFYZ1989842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113a473dd0be725286f18a5a0dc109de7d01c0c65e8a881d66d6db85aaec0efc. 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/QM24S1918530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2efd0cdebaeabfac36de2edf00b7fd7d441f173003383f7fa557da840c5aa1c. 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/QM24S1904585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ac63ab077d4a54ca2542e551182d683399098cc70fea1b75345148c898b6ed. 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/QM24S1845887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f85a46f975f750b3d5ef220c615ac8db0c83b2d93a37379ac8e6fd74bea6478. 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/QM24S1827474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4ee224e1010d474db7c83d8a1ec9f87425fd7db002b34c81a6ec19ee7e017b. 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/QM24S1827475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a42b77b37c8e8412cf77ee329d2468e347f28848e5b3e23e7d38471811bc249. 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/QM24S1827476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078fea439205f9cff9aac9342dff3f7999f2b0f2c27bac93bd3725eef1a41598. 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/QM24S1827477.