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 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 0x3f84ac21dfc022426f73a86f146df386c9e9118e2fe549ad5e842465e7938c37. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f464439-95e5-4245-9a51-315abf4f33d1.json and https://artists.proofprofile.net/proofs/artist/6f464439-95e5-4245-9a51-315abf4f33d1.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 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 0x28374857e061e47d09f5bc04fed48090af29fae718a9660f70757158f5ac0688. 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/QZK6G2340927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0523ce6334864a3b41feced470a9b0e27931a31f4e94660ad9e83f5a4988bb. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QZGLS2335279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9b750e834905b52081026e0aa81d75dd3adc82825004ff29fea931f009e4ce. 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/QZGLS2335280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859d03bdc32bd7c15aa58d70410ed4db3ca40702d6b313a04e8b9c49d3a49e77. 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/QZGLS2335281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5b353c4a4678181671d3704c979389e8b99bc8f70f04bf477e7a5dfed657f3. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/QZGLS2335282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bc578e3b5897dd42c3d667755b3c844687cdbf7b951949660eba4e889ac5e6. 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/QZTVM2380994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd2ad9b7ad02119ab69ac69fada18bf26b70b6116cd1c0e5eb8daac6f348cef. 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/QZTVM2380995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0edb9e0cb3248303fec9a2d7a8b5356a9dc81193e82709076172bc28a8c03f. 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/QZTVM2380996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe330de1c075ddb0f8c4ceb8ced782a307eddb1f80abf7c834f8f8f7f05cab5e1. 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/USHM22286358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec49bd89d7e632705256c797e523ceb0d3b6952aca2c40060cea2f4318367a2. 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/USHM22286359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0e651e1bdce04a7b5742cbebfbacb2c19d2dc2f97b29cefc705553cbc2b23b. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USHM22286361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad70e366b8d741a3539390221f185f48865caeec62fb545bb6b4c15aa8e5c6ba. 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/USHM22286362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b0599eff171b88b80632b5f17a12a27b425201babc34bb7197e8fe3e6f24a4. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZMEN2452536.
Summertime (feat. Ruslan) [MARROV Remix]
Summertime (feat. Ruslan) - MARROV Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe879ec9038e2336a31749ad4a6416a6c6798b1df04387924cbc80b829839d61c. 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/USUYG1448197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904b7a9d07e451ab9c42dd6e58d9e01097064c6195e7caf578c228fe6bf0afb2. 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/QZHNB2221485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710e04cea7a90de0bf62a873024c389b86cef59b46cc6c618fe8aa54a80ae7f0. 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/QZTAT2110280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d6106424ce91e20382c3347fb8bb5fea64af26fa778da6320075e990d18d16. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZES82266402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2300e063bd2dc47e8ba9468d7b80961545c823cdbae66f2b279e5ce331725678. 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/QZES82266403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bf270c295a38ec1161510c5da7c2a1a9e756fd2d5b9c0fcb83d8d85da58ed1. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZES82266404.