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 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 0x146ee5d36285c648c697716a514e1e97635861c8369af5408e19e01c59662e90. 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/6cdae9a1-a0a4-43bf-88e8-602a9591879b.json and https://artists.proofprofile.net/proofs/artist/6cdae9a1-a0a4-43bf-88e8-602a9591879b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hemp! A Reggae Tribute to The Beatles, Vol. II
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 0xf36ff6e96ece0ecbb6fc66f20c69dfdf6d40018fb311e7c3995c35f014f5c995. 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/AR1K21300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff2333f5bc70a0d0f5e1ff0bcebb721c18c1d39fb44767c47943bc602d7b6e3. 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/AR1K21300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d76b4e5de4b6da7a10e8a8fa9d35a8560447ad67b7b21294dcf9472f8c91935. 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/AR1K21300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f1cd06f28e815f00ee2ff110dddda922f79e0ad3693264918a086d8ceec667. 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/AR1K21300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb338f5a2bb0f9aeca65f23f0eddcdc6a89118fe2638e11f48c9aaa7d15237b0b. 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/AR1K21300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d71fc491dcabc3fe92ef9b0c9d6ba67caad7e10e390b843d8aa6822b5d7326. 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/USLF11800201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac4da4e71706f82af6287eb091fce75799176ef65d59b60d8049928a9603a54. 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/USASN1601024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad8d2884eafba68d8ce15d41fd38f6f92880cc0fe979171140949c1778b8233. 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/USASN1601025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04edb0c192f145d7ee2cc55fcbacbf9cf65d0f0e12e4abe08d5d9ed0396657ea. 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/USASN1601026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6d96423a60dd85b752f9fb3bf0a9a0c3acef68351af110ceae38e9fd3f8089. 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/USASN1601028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c666af96dcfd51bf1a94f8f9a758d6b0e184428f377937f5960aae269e6375. 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/USASN1601030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6acc2691e89d36e5f6e3553082dfea2a104a41310a65baa0cd0ee9225d772dcf. 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/USASN1601034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b9403707de7521d40fc53af7c0af419ceac00225267f0469f8eededf74f08f. 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/USCGJ1293568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8bd11ab3e3a53bbfa2b237502167b3e0ccd347853f5e5b867ceda015174360. 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/USHM90512955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5d9fb4e5ff6315c4a318167ae79ae181b75840f4d9aadf299f2b0bf7944081. 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/USHM90512957.
Acho Puñeta (feat. Los Cafres) (Reggae Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79916b213802beedb8e55f8aa484c2779e0fb216d4f49dfdb949d2946808badb. 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/QM6N21852464.
International Dub Ambassadors Meet Gomba Jahbari in Dub
International Dub Ambassadors Meet Gomba Jahbari
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd122265b0f2fddd65e839393e4d3bddcf0e2daac7012b80dc348139a044c6097. 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/TCADO1821115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81de540cb33a1f1248fc8425bc80cd46e1d5bc1e46147794d2bf0a5671b200fd. 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/QM4TX2385617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2206d9def832a28c0cfec040e74d3090331da1e691ddb46f0dc87ad3bdf11a0. 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/TCAEC1937771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934b309b88b9957a97704d0d16bb3a043e2b320d301db8c972e71dfbae969a97. 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/USATO1800356.
Acho Puñeta (feat. Los Cafres) [Reggae Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2c5f33123ccb3a155bcf40709f7f904deb664712979ff0f8509cbcf50e52ca. 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/QZWDW2428742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cc02109232affcb9d57589c1bf0c082362d70c1f6ddc992bd6938b98ecc429. 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/TCAGE2207860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f87fb9fabd8cd9b8a6a95c6e4c3949877d6a959c4cdbf68a83d1570b83faf15. 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/TCAEN1919189.