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 0x9cba4d08861b8a29f6cfef78a5878da4277d1099554df82dc38efcb7e7ea9807. 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/c3d835b2-0543-4a4c-8504-324d385384bd.json and https://artists.proofprofile.net/proofs/artist/c3d835b2-0543-4a4c-8504-324d385384bd.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 0x99356fd3e07e6d8e99d0097950e6f2f8946ba6480f48f83d2bb22b672becc2f5. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/ITD540700231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e22028052dcf3b32824c57ea74aed7381bb2964ff62a87b3fa31f5e3c93eb8c. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/ITD540700233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcca336052ca0ed3105501b9b17c1989027011e64ff110e85dee5b5f0bdc11db. 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/ITD540700640.
Latino Nights Vol. 2 - The Best of Latino Music
Latino Nights Vol. 1 - The Best of Latino Music
Best of Salsaloco de Cuba (Salsa, Merengue, Bachata, Samba, Mambo, Baila Loco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dc45d2b184bda1ae538b81bbeb082c834f6c5019df89c7d320d0fb6168effa. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITD540700419.
50 Latin Dance Mega Hits Ever (Top Latin Classics)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db51c7d9d833a2e37e1821aedca0084568711a6d7787710dddadf9414eda142. 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/FR6V82153491.
Cuban Dinner (Best Latin Music for an Exotic Dinner)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b49577de0aef77a7f8b5eda42401125c86ca7bbeee014fcb5d5efa45ce3c916. 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/GBBFT0000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5803b143a7f3d3057e1a70c165e4b730b74f562feda4d44b55424dd79cedf935. 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/GBBFT9500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15db3a309ce73cd60d98e8f277611c223da5195f3f4d156c32cb08905c1b0233. 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/GBBFT0000042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242adc94c5ea6e623b4fb7e87c17b5d39e38637b83341117eda7bd8d128d3f0a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBBFT0800160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2baf20a238ce27841148b9bd03f5792e165026898b9598e48ea160ae46dd9bda. 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/GBBFT1200513.
Salsa: The Rhythm of Passion (Best of Salsa Music)
Selección Cubana, Vol. 1 (El Auténtico Sabor de la Música Cubana)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d13f96b3a05859fc89859e23dbac68b01bc52d8868cce9a515429b7fefe3d6. 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/GBBFT9500138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d15d95c27f8e5b502adad013cd0cd0732e0693e7be3d40cb892f84f7fc5dc3b. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/GBBFT0700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb634ce8a1410e5561c8ac58f86f3239a0dc20827941cee62093618921589ed88. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GBBFT1300565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571724d690d022991fa321d03715af47f8d61fc4fe186aa8cd316fc9569e5e29. 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/GBBFT0200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40abd53a902784d39426b8af1d14a12a5fd89cf00516073b4b6f23615038a737. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBBFT9100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ea2b5f7dacbf4d63ec448837302808dae1e8298301e47e01a987b976e7c995. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/GBBFT1000124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9230f3db5a7194180e5f83bd58005c08df63c03ac0c0b3c1d2511fccc7100c0e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBBFT0300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f46fef14ddf9bc6e78b4e5e92a6ef4330b4cf2f3a6da50a751a0a88bd456b73. 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/ITD540700415.