thumb|200px|Dan Bittman, the lead singer of Holograf Holograf is a pop rock band from Bucharest, Romania. Since the band's formation in 1978, Holograf released 18 albums. The band won the Excellence P
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 0xf6da870b2e1f5125fabfd9f8b67425192d4ce4635cb5de06955edd18c60292fc. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ccf5f9c-5e20-4f7d-a0bd-7eecbf4ced39.json and https://artists.proofprofile.net/proofs/artist/6ccf5f9c-5e20-4f7d-a0bd-7eecbf4ced39.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 0x3dc5fc6e2721fa4805ba181e4127b0dd4af85515fb13f8b8d0250ad4e8d985b9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ROCRP0800470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8cee7fe796781c30a344dd708b407139a298100e914827e2bf80bda1f52d99. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ROROT0629308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7926c6e06dab73f342469642d051c938059b63f124f869693d75884ede1a3b92. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ROROT0608006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032789fcb50704fa03cbff630d22c49a1d29dfbe2c6e05ca90b872e2b0ad5de2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:22:30Z), 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/ROCRP0900788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7816f3eed1132179068b0767dfaa28879b196c45254ec15e9808a00a5622170d. 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/ROCRP0900794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c8875f75dd0fde99315b11f74d8b945e05e365757c8f8267f8061c93dbd0ef. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/ROCRP0900796.
Primavara incepe cu tine (Spring starts over with you)
Doar o viață nu-mi ajunge să iubesc (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe185d331dd5158018d664679e2d1c706a1c3c225e244fcd3fa0484dc5b4bd73a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ROCRP1403641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe185d331dd5158018d664679e2d1c706a1c3c225e244fcd3fa0484dc5b4bd73a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ROCRP1403641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef94607161d9fb1dbdcaaed6238f5bd0e984963136b0d18986eb59d941947287. 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/ROCRP1905221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21695091f28aa639d4280c1fe8f6cbdf6aebff3fa307b17e0bc3044105887786. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ROCRP2205675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e34c23a2e8e398ee24e9a41a129044f4a7b3db1485fe8fafcf92255045ef69f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ROCRP2406041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4094e8332a581b33324007048d875656133c58fae2b8bf9fb9ae669b26e8a37. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ROCRP2500008.
Ochii tăi (Jay Ko & Silviu Andrei Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2903d84fd9f89fc1818795cd047fff9c09d4af3a59deb1287160e150f2006a98. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ROCRP2500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf78ef16071560c081086363265964ea044d91cda321c581f5ff5874955b79ed. 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/ROB010804471.