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 0xa5935dc1c36776f7b6010d636b25ec1748dd2d1a12eb62aeeb42196deef65ec7. 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/ddd268eb-6df4-44d4-a187-3a1653a5c8bb.json and https://artists.proofprofile.net/proofs/artist/ddd268eb-6df4-44d4-a187-3a1653a5c8bb.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 0xe65fd0377e17d8f01b99b3e5ad4eab1d700609a0c69a75bf9d5c3303ee072257. 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/BRD1E2100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29514d99ac701a8463f230eed67d675c2dea279d6366bc4d5d35320ad8db2bc0. 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/BRD1E2100054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d81056ea0b5d9c8046e72fdb0eff6a083a1309a3ac7dd2e766b204ccb66031. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-22T05:37:01Z), 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/BRD1E2100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3edeb2803a955739402abef5d0a8b8af35b3304781294bb0d4cd39b3af364b. 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/BRD1E2100057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc107e84c6426d26e0a452231854cb3bb361cd20b1d32e6b3efdb2eaab5a8d729. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:55:09Z), 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/BRD1E2100059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2725435034a6a69e07fc1c641e187a31a7de8cfa4fda8838f1369319e8bc64e9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRD1E2100063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedab3fe53c36b5d66906d2b222fbc896adb7525ab6d171f9672e44adb732dbac. 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/TCADX1847911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91069e1202837749bd67594b0633526ece2249c856493b796d918cd55a27669e. 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/TCAFP2175467.
Rebola Pros Moleke (Rivexxy e Renzyx Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf69b0cc30098400a05fc2fff81840b894dcdc8f8f1dc34a7d47ac79a1b2101a. 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/QZMHP2064160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359008c04854d967f48f83b755c7a8a0cbcc60b1f79fa912c5c28566f97637dd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZMHN2078883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555efdba0a7b947cff076ad763cc1ad43320fdc273dbf842450b1e23197bfcea. 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/QM24S1915861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74984900a46a4551aed0dd7294a0587b477c24e858d1632a882bf10e8ba617e3. 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/USA2P1805196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eca9aecae7be88e2783e0357ea1830295d075533413d2807f07e1b8ea804fa9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZS672250761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870a65fc19cbbe608cacb388a0db78dd19a1f9290ac91476378205593e396878. 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/QZS642249631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014eb53d82a47e82dd4a4275feda2f20fed209597bf65146c6249090e55d56f3. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:50:01Z), 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/QZS672278780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3ac135d4e4fab63a0093a740ea68bdce19c4a8b320f5936ae6bfe3764cb2a2. 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/QZMHM2224251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d898d80b247d6297212feafbf47cfacdb064d8696b86136963cd71af630b0a. 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/QZDA62459918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4db1a5617add39bbb5819e4724f48f84e8d10fb6d0d4092cc2dce8e9312027. 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/GX8LE2406122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980a6a0a5b13406382568ce415eab5924bb77b837cbccd9de6027fc4647e7816. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GX8LE2446018.
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 0x4a145715ebe25891c3889f28ab2804aa4cdfa36c772272ba0aa9f625017b9a69. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZS642337711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68518abce881c7da7132017311c29ecc3df5a2df8e1177fe4600c1eabc4a55b. 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/QZS652319679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471e90ac491f00572560096076b532e5c043984c1c6b9d9fa5840e038582295c. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZMHN2341850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d010fc5fcb35c4878fe0e696909f1a392c74815bb3f2865c34eeb1ac3df569. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBLV62021465.