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 0x478f76a8b4192fc5f06a1f5aa2de25d2b3b10789e2c5296cbfed9d1c5ea1a6b1. 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/3af87b6f-470a-4a28-81ec-21d4ce9dc24b.json and https://artists.proofprofile.net/proofs/artist/3af87b6f-470a-4a28-81ec-21d4ce9dc24b.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 0xc0a705f4a09890459d5bc38e2c9ece8fc6dd2bbf64d3b20c57c29963cabb3c43. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QM6P41459435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683ea17af7255866e9c714eea3de56903d2b41129339cd88861315c64bf46f54. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QM6P41459437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cca3f28938756f5324ad6aed949ebfa9518bb505382948816edb288739cc10. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QM6P41459438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d372447a85b1b6c040cfa8f21c2af9c0f4dc81c6428330b37735801b6aa7d1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM6P41459439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe514344e9bc3214970fa931a85dccbc9e1a4a465c501665e7d6e32f2f52430d1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM6P41459442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06297bdca0d06eddc6d63d0e071e708d68955e037cd3a97c5790282a1d7b0a1d. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QM6P41459443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7938ed2c2855bf0f856e99db1aa47995245c0c4ea3e2e18337f164b54bea2077. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QMBZ92031055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe610b45de924c612bcf75b7635c51aab526c49592e23eea99fdc0321541f97ac. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QMBZ92031056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a2ddefddaeb22356d64e3f503c19f3c338947c3b0bc2bc41803f1f85707fe0. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/QMBZ92031057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fb03e3223f3b1bcc8d026d94ddfd915261d6a9ecec6a80a116feec5b21e628. 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/QMBZ92031058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15d024b35d0efebc2a27fed11e2af7f0881c75cd6394fdcb31dca1b77b8ab54. 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/QMBZ92031059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9bc0859b44525e449ea4f8008f0828247721ee9d5927d2fead2fec336bc79ba. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QMBZ92031061.
Family Check point(Return of the New king Season 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c42f9e6221b3c5cf8779ef82103a04b741be96a762d32b12ee02235b0a7cab9. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZNC62212828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9296bf1fb620567df106d74cda169797ec6b584587cdeb7325ff5cfdb19812. 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/QZNC62315335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232f72de7f767a24db93f8aea5c437cea05c457c9a1572727797aae0d3bec841. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZNC62315340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44cddb1963ad77d1cfe423e591b60c04afd5295da0b84fb51d820440e4dd214. 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/QZNC62315240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de9ecde4f8b280c53132963dfd5133e2ba310e920c0e27a61e7bf3ab64e82f8. 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/QZNC62315241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8636335f22bc07ae5b2671df79f9fe04d43baa6fa3a65904259f838db50bc5dc. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZNC62315242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67c6910015bc4495486a74a82647e3f2e69b2c87da37808dd52c24dc69e0d82. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNC62315243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59405ab513769c8201d88a1db44111398db49b9ebddc1ad1bfb581d2842b0452. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZNC62315245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2359ea85e8a714f5eff3d098aa45dc530ad041defffa36416228cfa65f9b925b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNC62315246.