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 0x0a54db84afb442274acc425aa0cbd170022c78dae5da64009e13ec247ff5e396. 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/cbfa68fe-e946-4beb-9c27-26d1c42954a1.json and https://artists.proofprofile.net/proofs/artist/cbfa68fe-e946-4beb-9c27-26d1c42954a1.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 0xd76f2e335b674be3534495d479ffdd376995b05e565cd137070eeb2ef205f997. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLUL61700109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb142571375b848b9e83e2baacab149fe104ee2f63f17880eb52aa374a2ac860f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NLUL61700100.
Humanize - A Visitor From Another Meaning Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d22ab8bf382ce76b7f0039e10e30a317e2964438ce947ce7f46a6a52d15ec07. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/NLUL61800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7435be5e6e2d9a4aa9febc118822c9dccf4a76f170a6e89c4ec21bed222f9ad3. 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/ES5052000079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa011898f823c40ea1c933359c9f09d0d58a8e70c68b02411147ac2429412089c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NLUL62100047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c0be8e4f74e52fc63ce52ab0533eb7260acc8ad6a9d6d5d00387c369aeeae4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES5052300076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f4cca57213ce71813661c8bbd7ecad21ab67ba18bc2dd95725a83cbe8f2e24. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/NLUL62400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b019728b79237ec9ff34f3af3892c5ef88f16bc5c1ebf40d1e37a0ff110ad76. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NLUL62400075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f46f56e56736db50aed5bff4b206760872c5f45c9b6e0148c4466b7b3947f9. 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/NLUL62500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf2f7b4d18def0f369555e6043018d81c4dd654206e6b003d7f20021a317736. 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/ES5052000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a550107e59bfbe4b220cc0f7009470ea43f30916de0b83e841be736b53ca355. 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/FRUM72101392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f4bd78a84cca2f17b677e6615d4960b9e57875a5d2cbbbde47d82edbaa5903. 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/ITBTX2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae222acc3f5fe1a05748828ebca6ccec547fa7336b2c7d619d45e103c1842154. 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/FRUM72101969.
Take My Heart - Italoconnection Extended play
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4608c13324266cce65f77a3e148ef80bdee1c35ce31f2472377fa2afc27750. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QM6P42342341.
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
Lullaby - Italoconnection Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0d7d1d8e05e2b068ecfe431b6d1601bbfe6c049557f294f447c5131e1b5474. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QM6P42342347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598c2532ab2b9a864b05b1b975bf0c30d3dd2475ecda6991cdd0b780a4420ae6. 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/ITBTX2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fc4c2af144c78635c74126ca5bb6b4b2ed8266c5272f780126fa38ea930152. 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/FRUM72101393.