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 0xa615e9a9b55608b71adbfda7c38577134870eb41c257f2036a38e5a861815607. 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/ddb7d24e-ddf7-499c-a555-dd79a4aaba66.json and https://artists.proofprofile.net/proofs/artist/ddb7d24e-ddf7-499c-a555-dd79a4aaba66.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 0x727e744a8860edb24df77c05d330f079086d6ecd7fbb942dfc9f6a43033cbaf5. 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/ZACO10800198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e588455eb64080d7e7251ef117f4da36ca3d2e3cea7f2e1e92b4e04dcbe628. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:44:34Z), 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/ZACO10800213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2e375226264cda97d20e2ff6eb3c511364be1322a441d196488af7ba7a8e48. 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/ZACO10800208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18d8fc654b5f3430904e22f0b0d59360570c984004e7ff09bdeffe3c77f5fad. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/ZACO10800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6962652ee088ea5cd5787ca3fe990465d18498d4f707960571738f234a327b81. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/ZAC010800425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468f2cd993567075a9930ef99ada9a75ee9296bfad826baa18f046b496835f7d. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:55:59Z), 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/ZAC010800213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57b59dbf93066ae2ae3cee1e2936c7a4963bd7bbe83ebf14ff3b64c4b533a2b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ZAC010800438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417d0648d90ca273ccb09e49c041a1eb917830a61d8e7df0e920681255bc3111. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:48:55Z), 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/ZAC010800439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6962652ee088ea5cd5787ca3fe990465d18498d4f707960571738f234a327b81. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/ZAC010800425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242f07b8cb4eaa26b2d28057a57ec4a751a990a6b89810deb926d95eafd83389. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ZAC010900110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6415d2871c2ebde33a9c3616d618f584d44f4a7dd3f9a949b3a0237bd8c45aa. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/ZAC010900095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397b0f974a8bc7ba5172a2a4aa711703b90f76e9d9d3f735d1e9e1454c15648a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ZAC010900114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417d0648d90ca273ccb09e49c041a1eb917830a61d8e7df0e920681255bc3111. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/ZAC010800439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533e235bf90c1c476c8c75b5afc3ba4cd5d028ca0a5201e91dd6316b6ab979bb. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:50:03Z), 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/ZAC011100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6066b51ad0b654699deb79d870ca6d7d48134e364d795ca2f3acc54014b56a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ZAC011100522.
When Love Takes Over, Vol. 3 (Acoustic Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8713c90d647aa3cc9f3d5d628d072021c5ddb08cfe70b1d2eb1f011d87f547f3. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/ZAC011200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908f70cb62a71fdc64407f6a084e63d026592fa51e183db20f0cd54cf988e97a. 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/ZAC011200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593eea53fbf8bd4d763f0b0eae3444673a371505bf7f5d4d05f3886d19d8c260. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/ZAC011300084.