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 0x7a9d7403436d937ba433065bf14d7a3265e342010013dce66a6ff7bdcaafaf0a. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f431c164-fd74-4598-92f6-b0936e863058.json and https://artists.proofprofile.net/proofs/artist/f431c164-fd74-4598-92f6-b0936e863058.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 0x3b28238c8e67b22340d055594aa074a68758dd9480cc74f082d9352ee8de6201. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ZAQ661400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e580627555040b33cacf4577484cea59b93f6e74339b9d4c6ae8d07b50edc2e. 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/ZAQ661400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641c4317e8f6c64c6113af319ae40c64b8ebee279abe97fee39990c653106763. 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/ZAQ661400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51bac8351ca68c9ee913f8d0ef8711b64d6b904a530443b3318a343ac5ff7cc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZAQ661400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f3611ee2699b829fa34d2e9ed9995c21d7d2057bc6534fae2e7971e2f9054f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZAQ661400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8368494db027a628e68361aa4f448970bc1c6d44208e11f475605d56db3a35. 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/ZAQ661400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa43882c32d794bab17a5541524c75b7ee00437179baa168d17a07d3afaeebc3. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/ZAQ661400010.
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 0xc1f5824f2a395fb1325801fe2567977cb233ae54b5a0e29f1e98fcba13d5439d. 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/ZAH6E2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e39bfe79f184875e7a75af7975c17eb26209581d6b27090c34dbcc26970952. 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/ZAH6E2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74114e4a13db295b110aabca3165509e76995589a5200a421009076d1ce9a93b. 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/ZAH6E2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efc59c8c473549ea7f73351d3f55f545a2c38c627d5d11ba8b9cde7f5e98094. 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/ZAH6E2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a78cf9c968be4bb14ffacd22e3f7b7bab3a74ddd3d27c9a0cb757f2a1817795. 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/ZAH6E2300002.
I'm Busy (feat. Zakwethu & MENZI BIYELA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ab3bd98101bf750cc1d3ee2719fb2f1ac0fd60a3aa997881836cbc041387f4. 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/ZA56E2416221.
Babe Ngiyakuthanda (feat. Drama Drizzy & Minero)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd897cb3b7c9fb84a652d44866c152655607fb62e0c9b43901511693752ab8757. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZA56E2416225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9522f58b46821705ab3fbc863e398c9b1e4d2132141876ccd675d6f375e0fd. 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/ZAE5Q2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dad408ae25f9f346db63cb3f32fe2fa3e2910355e01ecd2aa85eddf98308851. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/ZAE5Q2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a93523e5d955d91b7badf11065c97f4fd4be4f647175c2870d282c9af98b10. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZAE5Q2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0cb09f2b6ae0782e71e86bc7e8c9d32f32d6253e0aa78dd7ca35852a7237fee. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZAL919000076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314c92425d80f1ad6f50167cc582d68ed8975784acc77fc38a1392f92ea80341. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ZAL919000078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1d29b910f29e93af93dd22356a2828784899a1e3adf1ded6bbebdca92e06b0. 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/ZA58C1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a66e7651e59ec566dc0101b06682b2e1e47e1fbb2d07f42e95051361727e874. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZA58V1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd8db91238d7b0f7c4a4cfb3fb6efd7091872e05a0378534374fd0951f1b63a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZAHD61900011.