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 0xa30ce8c83bf2ee752d0d10043208abdcbb0f4183dde80aaf5d9fe3c375ac3ccf. 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/d5a456a1-8b64-4d9a-ab20-79f5520ccfd0.json and https://artists.proofprofile.net/proofs/artist/d5a456a1-8b64-4d9a-ab20-79f5520ccfd0.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 0x2f5bd95b21e5653e5792822d2e18d11ba70159b9edac00ff7ed88661cd681b4f. 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/QZQAY2445480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124948c35f655a83181197646c0f30ba42b39bcd362e21f6a677fe3578a1337a. 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/QZQAY2425314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c13d79a4e8ab1bf4ab11d53dd62793d17cb698301a9e12c266ac5f47747d5b. 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/QZQAY2444458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db4c1353dfdc08ca48ba57b78f606f07d7a319707e2db8f990ff3ca959fa635. 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/QZQAY2407228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f67268c552d7f5d3b56aff1b894039dc3fb88ad6167fbcbcfb79efc81e5fa6. 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/QZQAY2485461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e446de719f3492d26264e099aa74689be28c87c69ef321eac601e3b6dc8bc3. 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/QZQAY2423739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eca7b4927dcdf40eb69a9fb502180f716c785c6776688c3a925de352c8247d0. 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/QZVG82302502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94dddcd4c5b14fa774eb38cdc543d0cc8d64f0d13115d4eab5c074ee966b3076. 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/QZVG82302505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e698fff41b84b95be96a7e2c1b049f53a8f556630acf9a8ab24238af5f96e1. 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/QZVG82302504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b9e9979f68f3c793513f99a623e37dc16e18c827cc0024e9da73a5af77bb4e. 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/QZVG82302506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9636b24dba3c35a1e84893092f31339c63d5c9bbf37241dc157f8d11d60d829. 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/QZVG82302507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7089bdba6b7ddaf31d6db89d2f0904836a2b47eb48768cccf6def49887293309. 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/QZPEW2531479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3547e714d46fb6ff90ce73609d1db5396fcd6eb2326bbb56a5d03a026b86627e. 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/QZVEM1890389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d86ba0ff85bfda32f798caa57b5219abacb5fa8216cbfd0f8908f9f5a283ea. 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/QZS7J2407164.
we dont work hard (we're just naturally gifted)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e698fff41b84b95be96a7e2c1b049f53a8f556630acf9a8ab24238af5f96e1. 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/QZVG82302504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eca7b4927dcdf40eb69a9fb502180f716c785c6776688c3a925de352c8247d0. 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/QZVG82302502.
would you like to go out? (second date edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347c9d109f792a257db453bc38a81c051813836dd5d7063098aa4e2d8a4a6d6c. 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/USEP42423001.
castle in the woods - poptropicaslutz! remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5729212354893f30ef0639496ffd29861c90bca7e1789c98aa70ecd28ea8b958. 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/USEP42423002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463907ae014b3241e34f1b143756014b80bdf1b10f7b578b768cd60ced592aa3. 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/USEP42423003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7512487dac472b70e06e977f290b59a8ca72dccaed9da7eca75cb0832285a595. 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/USEP42423005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c992ef400f53ef8b209ef3c17ac381021b6c86d1dd20c5d634393c9039fc172. 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/QMBZ92357672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae48d83ac6221c10b25578a7f6fa24876bb219e84ee30bb495969d115264a6d0. 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/QMFME2322556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ba38b5d9325b4c8b29d42a3ef6e95cd9346631cd5799fb9ca73e09fdeb326c. 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/QMBZ92396233.