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 0xf584ae2c3b3a7df0a0dfa0f27647ef565f5518f3530c469bea7b0575552da4a1. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0629ee41-71ca-466f-b98d-521ae6336059.json and https://artists.proofprofile.net/proofs/artist/0629ee41-71ca-466f-b98d-521ae6336059.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 0x21b6b3f59fe3b7b89aa7c016596023b40382d543076fe9f4ba9399abde70a600. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR6V81493039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7aecc0baf5e18d955982e81147840fa98440fc55f7319ef00eab6da83e0e0e. 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/FR6V81493040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1e8548a0c3cb5b20358302c7a00161b8a87a92a2106002ead35ae3153d7ba5. 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/FR6V81493041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16757d30ab49b3411f21232d2feb96aad77a49abad1d931bc1ed8d27d1851daf. 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/FR6V81493042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde53179e5d7b770d7f52b8eed4a3ec4b8c475dd3ef1bb30506935aba5a6e72bb. 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/FR6V81493043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2400596d11aef5b600afd271c7d86ebf3d5a3a2497d064f0ce79373b9d922c. 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/FR6V81493044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebdf0c34c59516b1ee06eb04003f09e7b7b2830e3f0e8ecc696dee566ca7f37f. 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/FR6V81493045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148b8d2046e26cf7dcc43995cd20646d440ad170ac19d9dec66b1002c8941eb9. 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/FR6V81493047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6cc8fa9f90c5874751da4499170bfd1a20f6c2acb68cbd0546381ba4221497. 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/FR6V81493048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fda953e9388f8ec10d98d4a70c9387052e076bc89f7e7f6ab1b561c0d2de99d. 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/FR6V81493050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb02e69a6599f59b7b8827a421d3521e2c871c3a0dfb1b38d9c7d30308419061. 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/FR6V81493052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc757091d511aabf390757a0d35b3d390d26d381689065efd0003f2bb4ea0fd78. 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/FR6V81493061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc508d598cda5ae5222c615eb549c06e7fec3839510742f830b48aa6470b0d92b. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/FR6V81493038.
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 0xcd8d006fc5a98ec052b447aec1ad5b484a5eb348f6611134b63437eba8d2d051. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/FR6V81493046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492815ad1e092c737a692b336c7599ccb604e765e82e22ce186ffa7a55e94737. Chain 2 (Bitcoin): anchored in block 960430 (2026-07-31T16:09:41Z), 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/FR6V81493049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09dd5131ae15c19e3020e05a66989214d1fdb1182108c73f2ab9ffdf70266c57. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FR6V81493051.
The Things We Keep (Bande originale du film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c31258ecbc9170c6488de886b3162ee788dcaa6cb040523a804f271c61d6ee. 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/FRZ131491010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862f76c7ed46a6c822c7ccd20160d0c90df07a3accc67ee2fa641c87b5d08e7f. 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/FRZ131492010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b50d6be8dab7daa7169ca9de6680906de80e900475e73e0553c873d7139c09c. 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/FRZ131493010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd977ba179c987ff1ed6a46dd4c65ac798d880e4699f7926be7ad303a17d9aa. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRZ131494010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58972978c639809a0bd4fa3d058d39eaf90cbd267c2ddd58ea100e0ead598fd1. 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/FRZ131495010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ae2dd31d024f6dfba8ea43c03de2eed0700788b9c37acd27de71d9ac721f04. 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/FRZ131497010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811adf877caff9a5ab3587f8ca17919e1fb34f122a73e04d8218ea2780f721a5. 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/FRZ131500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2581c425d6497a631e2c5a31ed7330778e617f7b731d0d2c00b637bc8f57732d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FRZ131496010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc8edbb72be8aea5ebaf84d619575f13f70e4d795626faec8ba892bbd98c5ea. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FRZ131498010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef149362d231225e093c38cb2dcb5c7aded6d56eedaba7114ec4300e40b254f. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/FRZ131499010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf93a6dd4e3b4d186b7872b8920a6debd1ced4c36f640f9095de00a267909b27. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/FRZ131501010.