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 0xadc6d969a09a9de0dc4dbf29b9b44b7b5e87ae42173410746669bdd44be015be. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6124f111-2fe9-4fd8-b886-f1b7aad43e60.json and https://artists.proofprofile.net/proofs/artist/6124f111-2fe9-4fd8-b886-f1b7aad43e60.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 0x03a1f2bff4810d9ada187df45d7cadd6049c151417a741fe7c617293d7daeea8. 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/USMRE0892404.
De las Pasadas Horas - canta: Rubby Perez
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10e7990bfbb32885c4822e82ffff41c11e8707add54cc9c1baf7fb5cb42bb3d. 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/USMRE0892406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce852994e39af2e5751218725560d4ec15ec0d0d674b5963161d42b300bcaa67. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USMRE0892408.
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 0x9b4f8a1841825061bc7526081e07ff724721d4e89f9dbc78de933ebcab630e32. 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/USMRE0892804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019f2c15af8822fc9dbd367ae6959722f80f80ce317bdd7a61ede056e333c9d3. 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/USMRE0892805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed68005f624c200a30b5cd82c3deca80c8303f5afc9f604028aed193748244c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USMRE0892806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00904c0dfd90bbcb032c6b19f35d6748b05005c4c9865a26bdd2288a5a414cb3. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USMRE0892801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f668d99183c3e44c2e95a6cc94ced40ba7b38653ec3f7aa33aeac1bccadebb. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/USMRE0892802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739853a50ef694192bda09f5e8a59f637098dcc1673d1479bddfc3700f2c2013. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/USMRE0892803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe956b21868dd983898c604ddbfe4fc4527a9b4fc54673d40d78330af88664e81. 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/USMRE0892807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cc26a8566d6a8d0d8f4832bf813e024a94ee4c4c5e37d628215b55ad49c0f5. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/USMRE0892808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0900af8f52803af174380b6881ac8a56ee87a63966cdc1650ef12a5f7dde210. 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/USMRE0800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64198c3706fd843e6e6dc0b280cbecf49192df6cf376e375ef5aed99851ef9c. 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/USMRE0800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dc372c0e444752a2f25a74e114d95fb35c7c6fc7b24bce9fb9e3804c3dd9d3. 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/USMRE0800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e10a77304b799669ec34848862330827387c47e8d0be83a8e38a078427d3213. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USMRE0800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0022a0003f210d6693c13bfe95bf1c168960c1ab9e44d0299786688a2fd2a2f. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USMRE0800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5b01828d7f13e256eea84d999e8ed6b699a1d0a12ca0b12a241688b4cec0b5. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USMRE0800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4e72b42eaa6e8ab254aa9f574813baaa9f522ad3423f815d2ec25a582c5ca6. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USMRE0800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc800e1fd2dd724f4416734a462525e0719b8bc858ad52aa94aa209be84029105. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USMRE0800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45575ce43a3f59307f73555bee4ba72dbf0782bfb975a798e4c4fa1101b2de8f. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USMRE0800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275d387d42cc640bce1df1c1f78b863f7fc86c781197f1d2ecbc67060340418f. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USMRE0800029.