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 0xee0a16341d6132b3f9ea7e4a6f2e22b987660ae28d2d4a59dbbe936afc3d1631. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23f249d1-7ff3-4faa-8884-593439b91c1e.json and https://artists.proofprofile.net/proofs/artist/23f249d1-7ff3-4faa-8884-593439b91c1e.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 0x77338e88163c3ee76600f864687a49758769e0340f1d6da06928b73d7d6c723c. 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/QZNWV2376868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f111c124c6833305eaa5c1f9e21d109f6e4667d275af25ea74fa6eaf9f09cc. 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/QZNWV2376871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a50f69cb166e82f2213684e6d91694a15656d79b1b0b5177c6c3dfdbf30462. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZNWV2376870.
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 0xc9e077c8054cc3279e2bb37a5224101f9c5911ee85baea7808a9ac63097d936b. 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/USHM82401159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6057f8ae6e475950aae3810ccfa272cec8971e0ffc2fa68a3c5147f9aeb6d76. 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/USHM82401162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7096c7d8551587a2bf2dc39285d07cde4389e68fef16fbe81b0fbf00c9b1a1d9. 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/QM2PV1811065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e88c67801048b31868e4f7f0e326bc90f0100aed99844aaa7f6bf2139b7dd75. 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/QM2PV1811067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce562d53ea6ad856494b5ff0a92a22ce79b969796d52e501fe28f5e98e6560fd. 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/QM2PV1811069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91cdb25313f1352259224a9e1d69ff9dde91a382bdc35238a4ab0d6d02ca07f1. 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/QM2PV1811070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28c3581a7f5f0d847ae162de9bf85dfd6a02322d6a26b0afa40aa73f1858c6f. 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/QZES92497729.
Hell Is Empty (And All The Devils Are Here)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e1ac26f71246872ee09884b77210bf4693f05aa5db87e05687dac9ee4ef02f. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZES92497732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cad78f413e90cd5c1f41b9bb07dd329ce5e904c8d14dc601ebb9fafa12713e. 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/QZDA62359480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563b6db2c21e2ea4ff6aebb4f621a8925a9632a7fb648859941b3004f47e164a. 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/QZDA62359484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5342cc9e02970ffb5d862028d084a8ae24979159e8e9caa2383f8f783103cb7a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZDA62359481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314dbd604ec72ed042ccd523165a36f59b047b2d28fa2de2b0e0ba009c1ccfb5. 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/QZDA62359483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1bafda7213af23fea5a1907518ee91c270beb18aa908f5da8755bff494b3b5. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZDA62359487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2028c762b740d0b7f640899523580d8428940641db28895c69f4f05085f18acf. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZDA62359490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358e26bf723be12085deb7dfe23e6d5c11f5ea204a1ae26452aaf0da39791489. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZDA62359493.
The Country Bumpkin's Drunk Singing Skunk Binge
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d86f6c97cd130e7bedc620114d7b331acedaa8b1df4276c88af4911eeef9a7a. 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/QM2PV1609338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8967ece95c361bca83093ad71fe680997a43f592d2e9e21cc1a720734227c422. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/QM2PV1609339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55773e130c8c13eebdf285e5d2aa0211dd10b4df66122bff442a0f8608ef1901. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QM2PV1609340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9919c2466a6d477bc79e21d98b897192abe01a4b9c8ec9cd3274893a622c2f76. 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/QM2PV1572841.