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 0xf4b13e74c3605bd74315bdc8d8237afece5333c446a7aaa3c03e64f4f547aa8b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6aa11207-4197-4288-a69f-1e2621c36e0a.json and https://artists.proofprofile.net/proofs/artist/6aa11207-4197-4288-a69f-1e2621c36e0a.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 0x8efd107edd70cf9ab4977b78c15ee992b331a059fb8b1cefc14f2695d0454580. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHNA2211769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee5da06c80eb39784f4228830eb7eebc8fac1c7d0229353dffbcd0d31f4929b7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6J2299101.
DEGRACIAO 70 (MODO NINJAA..FEAT BLIZZY68 X PAPYBLACK X MEMOATR X CHACHOGLO X ENMANUEL MC.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8a22e13f30801c8fdf94ce7623d98c635494178cfbc89647a51d167a2ef39c. 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/QZMEM2326693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0585f9425ea0391e4df58d7d0d57e440b618afd7996b35ccecc70f70a42c2254. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTBC2380393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0547f4b3e06e81fcbef459f7e79ff70164f7ba83a24b4743af097466187f78e. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:40:21Z), 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/QZDA82492735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93364d5e59a733575e1e253f3f97f57aa56d95a976d5e89e819c68e80a9447e0. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZK6N2402496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19475d028a5eecca3bb4f85f199501bcf22ba74393975f231290e221f263f6b8. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZPLS2497583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6804674e3edd4ddc3e24510ad0c3757862fa730e686bfbd04d709fa5c8337b95. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZZ7T2422905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c867d7c66afcaa6fe64df93a5cc52bb44d147195bd3855d77ce1bae91f543f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZFYX2522919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cc4d8e95f2e1c3fd1b1e36123963e9f759829039f1d4f1ba0b704333f7040e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6P2546558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a320f87ff550145c1e8bbd7e3172b19f247f40adcd97c0c6fab215f4775769. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:31:27Z), 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/QZRP42559545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793e34b434f597bd98aa3fdb350749bf85b94f29a44e90735a11c107594dcb25. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZZ7U2546784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20e6a8dbfaee425f4e7f18fde4f8a767c3e7271e6ab8a43dc0101efde3f5ae9. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QT3FD2546186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d7ca7e04336ea9b14832878d3adef5c0914ed6e23c27adf343ea566f2b8a00. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZDA62487276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa59b85f1765e688352674c168712cd1052048c3e8a2195a21e3503c07865f4. 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/QZES52348465.