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 0xc409fa98d3d9fd99636514305ec3c9a00dd8401f717b8711015e152e3f198c25. 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/36c84004-18df-4b04-92c8-c557c879dc75.json and https://artists.proofprofile.net/proofs/artist/36c84004-18df-4b04-92c8-c557c879dc75.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 0xbc313f4d609ab96371df5eee166f6753c1385eb787a5a56295d83e3e9f61132c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/IRIRA0913876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa998df65cb9928a707301b0ff384a85c482bb7b334249f269b524ea7d24213c3. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:52:36Z), 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/QMFMG1341693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef922859d28a4bd32e4cd0d83a8a4278db4968c386185d395e6f07ace5bb2c6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMFMG1341694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e54587ae95c6982d2cdfc56e77a28ae948cdb0156c16da38a81c7695c3aa3b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMFMG1341696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4986e1477fc19825457e4f2b272f6da558702dc35777521d1d00f822bafa91. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QMFMG1341698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69cbc68d193cd4f67019b5e872e4c048c9ac42d8e41e0bee8e699686ebefab3. 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/QMFMG1341700.
Karaoke: Sing Like Nicki Minaj and Other Hip Hop Stars
Karaoke: Sing Like Lil Wayne and Other Hip Hop Stars
Karaoke: Sing Like Beyonce and Other Pop Stars
Karaoke: Sing Like Lady Gaga and Other Pop Stars
24 Theme Song (Karaoke Instrumental Track)
Karaoke: Sing Like Bruno Mars and Other Pop Stars
Karaoke: Sing Like Rihanna and Other Pop Stars
Karaoke: Sing Like Usher and Other R&B Stars
Karaoke: Sing Like John Mayer and Other Pop/Rock Stars
Karaoke: Sing Like Taio Cruz and Other Pop Stars
Karaoke: Sing Like Pitbull and Other Pop Stars
Karaoke: Sing Like Wiz Khalifa and Other Hip Hop Stars
Karaoke: Sing Like Drake and Other Hip Hop Stars
Karaoke: Sing Like Chris Brown and Other Hip Hop Stars
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09145281dce4e45f7f8c2e288da4dafc39d008f2043772b318c057d541af4cb1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR10S1796113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e89d97509ce242f19973b91581cf7565bddcee0cb95ad7a535eb0b892a7ac05. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:58:47Z), 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/QZK6F2258535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1eb2c336d5aeba27c2cbb9cef17c57d3c8b109e7d6ac1bb1a53edb584ef54b3. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:02:06Z), 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/FR10S1972793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8289bc65b74803d4a7c1e2051ca8662296f14ca3352c75acf6fc43a29c21404d. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/FR10S1973655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73196057590e47a6fe18fa8c7dbf37ce8158b4bd50ccc9f925cc10ef2cb75d62. 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/FR59R2136151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86201efc7152122eba371fa0d6949e9afd762840f8182147c72abbcbc72dca08. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX872360219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96df46712cbe76e6e54608bde493e0e7e9087b5d8257b206c98534ac6c74b64c. 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/DGA0R2341006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dba65f991cf45dde833a6224a47ff1de38eed3ada57b6e0aa08b4555a067a88. 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/DGA0H2441181.