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 0x9543123bb5a3f2d107923667a5cbd766e01cfa3230020d85ccea865eb481ea53. 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/058751b0-9f95-454b-8eaa-25627895c47f.json and https://artists.proofprofile.net/proofs/artist/058751b0-9f95-454b-8eaa-25627895c47f.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 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 0xa20c154485f38e39596b173123d83a3333d7f0513c13e286519e6b7e97e80435. 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/ZB88P2400419.
Sek'phelile (feat. Malaika M, Siz Kay & Shino Kikai)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe453f538f445057558ff29c763f2ff836ee8c9b87e30c70d4eb6611692e539b. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/ZB88P2400420.
My Everything (feat. Lungile Mthethwa & Dj Lusoul)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269a58b7c521a40079e69448ad85fcbac2f9d0bdb22cb2430362301bd9f63813. 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/ZB88P2400421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfd19d354277a98cc2a102cce0e6b06e5b7ee74579b4f87864464229722080b. 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/ZB88P2400422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6935e2610d538bed16bb546ddc236f7ef7376ae5829ca49454839625effcf7. 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/ZB88P2400423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1c22bdc05dcffe32523809efc7f331ef0f8de7032e66ef82bbfe0a8047575b. 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/ZB88P2400424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d7a752d3df2d66993dbc37ff2f41c9360211a52a34ccf4280099456b10b0fe. 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/ZB88P2400425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a60d128711720a1dfa573dcf1315345f4bdd0e021a673c2de1611c0db3cda53. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ZB88P2400426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b69663b822387161fe03faf850fd8ede4873333d1d9aaa8e554e76b10951fd3. 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/ZB88P2400427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de5d1d66a047b8449a555a5e0fab215bc998f7dc0ebc833a1e27149cd5e07c9. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/ZB88P2400428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d83ef6e085534392bcbf72eb0a9842e69816b6ba2c424e6c3d22da211bb434. 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/ZB88P2400429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12efc7bed3aedfec33587b1e72c77fbd8ab4a04be9d6a56a6c0331c11c18fb2e. 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/ZB88P2400430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ae145ce7a7de6233a6ef731d1b3b35712b6013f6f22681fd6e95797b624ff5. 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/ZB88P2400366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a76f595a267b6e13fa7df39de8fcb917079f219034ef09d80b8c0d8fdc2d16. 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/ZB88P2400431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d25ffd67db3a4d2aae8c24fd0acb712325c1cafb9093e9e8016db9eba37de0. 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/ZB88P2400432.
Shona Malanga (feat. Dj Lusoul, JustMango & Gubzin Deep)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e80d535747af66a0415baa7696bf9d8dd9c7fc439bcaefec77d2f5113fcbbc6. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ZB88P2400433.
Swimming (feat. Deeper Phil & XolisoulMF)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc23a8bf4a45bfbf08c15e8de1115fab98dce59b3ff818e7435d6ceb6c26ff86. 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/ZB88P2100065.
Tech Love (feat. Deeper Phil & XolisoulMF)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec58f0ade8638069039df7b1e3ee40813b2f974f938ff175851e0c26cbc8785. 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/ZB88P2100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a65e47e554199f24bc9bc41c8df557dbc64c4d6805a48e66d4ed81f009f307. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/ZB88P2100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02954f615aa481a7d64314ee0adfc66e46936ce8bfa83fee968fc5765d83eea3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ZB88P2100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2708a17b4c4f549114c051c67bc14ba7d16c17254a2d49890cb58fabdaa4e2. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/ZB88P2100051.
Active (feat. Visca, Stakev & Deeper Phil)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0779919cac6c497006ab16e8612138fd2a707928cbde4d47876c87856ed15160. 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/ZB88P2100030.