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 0x80c284078e4a18c3a26ca2d773ff3141d79d41743bf0caba2963d6e9b017dfb2. 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/95bc3263-2888-4c90-998c-5554aa55f5c1.json and https://artists.proofprofile.net/proofs/artist/95bc3263-2888-4c90-998c-5554aa55f5c1.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 0x8642dd8279f695c10bbd74a516334b7d9a0d5d7973e110025e00fa6fb559f9b7. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/USCGH1967102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a5519f75043b402af4c07ea8e6e5702e3d78ba2f4afe8785f0a06f89f4c1a5. 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/USCGH1967103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5e44c99ab1e242340c780e5be531d8ebbe5be9dc9b109d2f13f24da3096852. 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/USCGH1967104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92944763230977014e98c87895557b7b64027ce7b1945d0d99542197d89bbb05. 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/USCGH1967105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1f15f88c5109027e91d5138c611a9a50cff718172edf5e08134f638693f841. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/USCGH1967106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0974d24f4c0f62f5c41669bec54e5ba2e1c5f599f8ed6c414409a1326b7fad31. 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/USCGH1967107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8172cb2b5747746545cef817069b5140fdfb0f43cc97c47639fae503684564. 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/USCGH1967108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbf5bd2b9e013550df3253721e9f1ac498a9234969d75c109d0588b75ecd0ed. 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/USCGH1967109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96463379a9ac98a40fb5a653c6b9a80271e036ad060d78ef619512513c389246. 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/USCGH1967110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5046ec99f7ec5d7718b6f4a6252e198c946baa04bce5239df6e22ea06c07bd18. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USCGH1967112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c12fbabc2680981d19279e96bca9b1157eb2c827605bc64c0ceca37a03f5b1f. 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/USCGH1967113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5f1985436ee009813560cc773e2bf85274ae06cbbc5765a6b4a193ba38f632. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USCGH1967114.
Ant-Chula (Remix) [feat. Azagaia, Duas Caras, Dois Canos & Asmall]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938723399e3113eec32bba7aaa99117cc1bf294542f8a46572fa1ac3cf425189. 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/USCGH1967115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc887ea7347f820d3ec1ea7b8dd7724b72e7b208ad2c2adc188ce7fb5ec01fc31. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:26:55Z), 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/USCGH1967111.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87fc5411e0398e3ee237a07e6755ae3a96b0bf883a741c6ec43a9814f345220. 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/USHM21981958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1dddb4a6ce1c18c68e3f91ab02d42136dbd659000e176a1ed496399e89bd21. 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/USHM21981960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53fac4f14202827c8a6bca28de3430531e7d8b8fe3067c80067fb9e5b604a53. 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/USHM21981961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a1d49337349c775a21b5826f5a888b3e3b26b9c6940b144670cfb2acba2cda. 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/USHM21981963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a72bfd0d1a7f7b50ec831f93ffc26958ce5da56f0d2b147930de704ff8ba178. 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/USHM21981964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb4a68e703e3f5ba7197b39264f6ae62ef6379a335b4857a1fce09fac841492. 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/USHM21981965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0112337c240ee9ee4bed4c26778cd7c7ff9001dda0c78b5fa54d67566d82a0. 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/USHM21981966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa97189d1c467b3c933b1c1945db34471d4ae131cb653e9cea78cb81d0916f82. 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/USHM21981968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9357902948e0d581e6554f75ce49c3d7fed7de1e4ec934f0fbc98b183f285554. 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/USHM21981969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88dbd0052f3ad01481228feebbbe6ae401fe596f7df973c28c52e2d62b3f62a9. 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/USHM21981970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f8732a20051b63710ea8a8252ccda39cb35cf11452132e484739cee66257e6. 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/USHM21981971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705ba692e6f0b09b30fa3f3990bf5a0c96ac861e0c5ff7c2ab4019b3a2017401. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/USHM21981962.