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 0x55187adadda47509e224587f279f171bb02bb3fcceafbfd6f1d2c632d587db39. 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/58a84fd6-a9f4-4fb6-978d-28b4b1ab8142.json and https://artists.proofprofile.net/proofs/artist/58a84fd6-a9f4-4fb6-978d-28b4b1ab8142.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 0x13cefe565ef4677a86d3e40d59e94df11e1a36b492f9acc7a6f2b40df30a967f. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/JPZ921211533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3c2cb578124980b5a79a721a3ab3348c8c7abc8eaee147e8d5193f24061097. 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/FRY510777811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d07c97e2e02ca64b29e84d64bc0ee188d5edb3a200c14f5b751716954138cf1. 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/FRY510777807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b78167820e0bc8539fec888f639ef305b60e876e043f1cf1079276fc097c1a5. 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/FRY510777815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf243ad398cf7695058016f459b63824115f15c58b523a708c405b8d9353b217. 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/FR0W61777246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57eb883c3cd3a1e2cc30d492dd5a1739a14f25542c17d063d9df50c9359135e0. 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/ITR551413000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fb5d4403b3d5cb0c8e07a9374d822b99b4a45e48980d1c23984d48c7f8d016. 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/IT7151391083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707641f430a5e1a6317fe1576f8e3c5b153aea4aa1430a244c862ac391fae6a4. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FR0W61777245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c40172fe8c2df2a51f42bfb28fbba361591bc3a2d78b2858a6d25d7b203c256. 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/ITR551413859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682e93d1bf6558b6b3965a6d61eab8cbcfdf605cfb7f8afb9eb33d64bb3e5dfa. 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/ITR551500063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36d52d688af116c071fe3189f18e202f93c4785d48a8f8616ad7b92b21d5bed. 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/ITR551413362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1529d943158760a74e5054764acd802ae775b14fd5a72fd9cac96b64c58bb1fe. 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/ITR551500060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecdd1fbc975bde4aee2dd11b759be483aef4b871e92236e4593ac25def62451f. 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/USCGJ2371834.
I Can't Help Falling in Love With You (Instrumental Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb540d3d5db35debc0aff6cacfb742a9ac7ac4e7521e646cd741aa703227601. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USCGJ2371829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8aaab86ca0624168f944e6dd8d4e29156baf46a2df2d0d7faaeda7eaee364de. 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/USCGJ2371826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f90ef7ccbcf9ac81c5509102fb3e5088660a58a1da9d5cd3db3a553bc48853. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/USCGJ2371837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5769fcb817cbb9b583819dfe7cfc3c45d363ed881b0d605d467fbb1e02ced4c8. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USCGJ2371827.