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 0x4cec3a6fe97dbcda4d36c9a73f539819515702e6f85632ea26e753155194b18b. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3bf5010f-f7fd-44c6-ad82-cf94cedbd4e9.json and https://artists.proofprofile.net/proofs/artist/3bf5010f-f7fd-44c6-ad82-cf94cedbd4e9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Escolta-Ho en el Vent (”Blowin' In The Wind”)
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 0x9e1a6118532f6b51d9551251c40b0dbd04adc6488a014708702cac0355fb37bd. 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/ES5950702288.
Et Donaré Aixopluc (”Shelter From The Storm”)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f5bf54b74f7870ba703e60059b767b2bc6057c3a4e40665cf1d503fa7e5333. 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/ES5950702291.
Visions de Johanna (”Visions Of Johanna”)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d440e024485d6421c378bafa7cc400dfeaa84d9852982bb330e84ccc4fd8397. 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/ES5950702292.
Trista Dama de Les Valls (”Sad Eyed Lady Of The Lowlands”)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd154546dd7662dd741509020526a01ddea4faf9a3f6cf1149b2ca5e8ba3ca0b. 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/ES5950702293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a9bce47502d913c9785393921add0e0ef73590f56c1787c4e5debe1b01e559. 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/ES5950702296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45c44152c14d360edca747d501ff20f195d0a654b68c6d6c3c425871170eafa. 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/ES5950702297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d9569af8a3b710ed2bb93bf459708d194299663652ca34bce9683b92bc3692. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/ES5300205119.
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 0xedf6d5e7126ee142528c070d51048712a772123dbca34dfb2661863c6f461227. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/ES5950702285.
Seré Teu Aquesta Nit (”I'll Be Your Baby Tonight”)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c5599a71f519eb40a510206f1ab772606b42cde403a42e36a014eead1a0946. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/ES5950702286.
Tot S'Ha Acabat Per Mi I Per Tu (”It's All Over Now, Baby Blue”)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd652287da3f3fbd39f9d4af38f6dd187708c7be0a1b7ac8bba11426eedb3e29. 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/ES5950702287.
Penjat a Mobile amb Els Blues de Memphis (”Stuck Inside Of Mobile With The Memphis Blues Again”)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab38f6da460f924252be2d805f0ad92831865d826f300c209c7ee429eddf984. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/ES5950702289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f903e26fddc49b106cd57376a9ff193b607683990137411218729ff9b5dfac8. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ES5950702290.
Romance In Durango (”Romance In Durango”)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8672cc4b257345e9ab15ecab6fec7a8f35cc09cc3b7a14f3bdf839394f2697. 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/ES5950702294.
Costa Molt Riure, Cal un Tren Der Plorar (”It Takes a Lot To Laugh, It Takes a Train To Cry”)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ead1c5e258edfae90284405c3f24208f45317f58e1869caf36ee8bd0346c89. 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/ES5950702295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10478832452dce4ed2f67329d0ae1d017988241e80f5a72f1ccda534ca5677e. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ES5950200506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ea2246f35fe70740448132ab6c1fffff196087aef5fd74e084809483bddc93. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/ES5950200507.
Deixa-ho Còrrer.Ja Está Fet (En Directe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28aacae6d50713f75f4bfdbdd8d622dff3d5f3bcaa31d62e107f564599abe115. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/ES5950200508.