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 0xd55f9ac514dedb670d658cee25cdf233bcaf2fc5bce259b556b7320d4f4cbf80. 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/47608fcd-0229-49bd-8e5c-4cb39c05b77c.json and https://artists.proofprofile.net/proofs/artist/47608fcd-0229-49bd-8e5c-4cb39c05b77c.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 0x95d491bc2126ed9b49d4b708f67ccc37b4389cb6574d62fc727a67cca52416de. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ESA011578468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa752e320a1bbfac2feb04bda6df2e3bda33549e49fab030f4c023ed3b191ff6d. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZES91989505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde64134553d38da4582b6bc9a9a5edaf3721f1d1ef09d1ab32c18ccce525a578. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZFYY1900924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911c7ad3d3255fb647dd135cee308754b8bcc41d6793ddbd73c6e76fca53e4e1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZFYY1900925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12367894332f9afd098b8975c10f3dcf6c9ec833e93873d652d53444d181e23b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZFYY1900926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70dc6c668f12c51dbb0e5c73f66669bde0d1cfc7bc97a923906771a1dc35285. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZFYY1900927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2e6ab1aed053373c6e9091491f3cfe0eb7fcf6984eff26b17b3ecfd6a48b2f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZFYY1900928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86971132db94c82b6dc8d284d742159894d86bdd5e7ba16446b857a5374e15af. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHNA1943478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040c21adf410d45df04fb775a09f353cb32a9a256d9c3c52ed24f3fc8b5c5754. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZHNA1943480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4bbde0a99f5662f66adf93499e7225b7d5d90b5b35bbe994b7e5dae5506963. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZHNA1943483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8698ac5a1774378fa23939b42b6ed87da8483d1493be0cb75c80fb4eb3864ea1. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZK6P2037246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ad2537844cece8e7ed8194a57e9109eb4f6e427fe8f6005f9e4d2aab491b02. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZK6P2037247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd70333276cd1eb55a858f8c641c2f3afae2b593abc50505491c355609d7c91. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZK6P2037248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346e51e81e8ca60f19001eedb50e2e64bf8c23f01c5a96a4ff4009a80b3242a4. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/QZK6P2037250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df7555cfc87cd6d93c29d8762b014890af8a76954ddb86925926de85ad94ad4. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZFYW2166123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062812a68c688ca8966dbf7cd1affd8275103c88f73045e969f7a1a343ade07b. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QZTAT2457788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1db031efcd6048229886b48516bdd8e1ee94432159b08d3fc1e8c794e7a347. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZK6N2599636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10249835bb6b8240d02dbf8d63d15aaf132a51d677e2cd5b92ff3594d73177a1. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZK6N2599637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d039b5f967b83f5b4b447ac7080c56b3f8b333a54b83ed1ca6b3291eaf14a0. 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/CA5KR2172551.
Be Someone: HoUSton Population (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d039b5f967b83f5b4b447ac7080c56b3f8b333a54b83ed1ca6b3291eaf14a0. 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/CA5KR2172551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d0f9848e0f5764d97e716110440ee58f1ade37c6bdf6ce45f93ce0b9375c6c. 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/CA5KR2392723.