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 0x4307a10629fbfd1ee8abdf2d1d514f3360102840c02dc74d6cf7619cbb221c99. 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/446474eb-934e-412d-bab1-8187f2565282.json and https://artists.proofprofile.net/proofs/artist/446474eb-934e-412d-bab1-8187f2565282.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Summer (Original Motion Picture Soundtrack)
Swagger (Original Motion Picture Soundtrack)
K.O (Original Motion Picture Soundtrack)
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 0x71cb2f21cb7e29141e34c334adcfb210fd7e7182f9f0e8323b346ee804427b4f. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/FR7XS1700041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f72dbeaee21a885331b29e33ed3ccbd40924d8ecd4a196a5e8eb2abf796eb8. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FR7XS1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610e622929cc419f50de597430b58cdae0c79308466eae1f95c220afea2f38ef. 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/FR7XS1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cae347c8ac116bef8c86c4ff86ed8da8eea5a6552f54b11461bd629ac5a92d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR7XS1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c94ba96172d3dafadcd7915ce06e4ad20556dfff401518017bbfd600b95726. 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/FR7XS1800010.
Capital in the Twenty-First Century (Original Motion Picture Soundtrack)
Summer of 85 (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd85edc4c800b1eb1958f48e17b59844258bf18ddfd0ffa28d44aaa30dd3443a. 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/FR9W12014889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c7b49552caeaa6e4e398f6c26a4a11b030f0831ede4ae2b982213766acb738. 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/FR7XS2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c7b49552caeaa6e4e398f6c26a4a11b030f0831ede4ae2b982213766acb738. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR7XS2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ed854e31ffe638c453a0ad1c7a25522ea86c3a893e3f35bfe06ad9cff7cf72. 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/FR7XS2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3edafa3aa6a74023f9cad9ce443461d10b8e4f30260dfb09d77e83eaeeba4b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR7XS2200005.
Summer Bip Bip (Etienne De Crécy Rework)
Summer Bip Bip - Etienne De Crécy Rework
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f17bb4bf4be0b150216b1d40865b00c0babd23234cbd301d587a4a83fb7a487. 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/FR7XS2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744c448de077e726d72347a3b5ba8d9a4024c3430e2bc415bba37fe9a7ffe3d8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR7XS2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258e77e625364f0fe74578e1f51c6fe33e0e85a6a36d00c9c98ffd9e3e652a5f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR7XS2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdc900b526205657eb60a2655592b9cc718742c0f3629199344ba30ce0ad804. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:26:03Z), 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/FR7XS2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1b7f8b8f38e7e78781a4360e331fc9b2f32b575d6128ff28050ac9c1f44fbf. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR7XS2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258e77e625364f0fe74578e1f51c6fe33e0e85a6a36d00c9c98ffd9e3e652a5f. 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/FR7XS2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a55d4007578fc1c1b52407486c8bc8df08b3f37f21e33d6afc499b84d4b2bdf. 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/FR7XS2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cc1ee06c938b6ad6a79f19f06c29a3af8d950d6bfdaf47f029f9ae4c32f8af. 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/FR7XS2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc67bb2f9bb2e2c3952004a7a1ffef3b907e7f9fca8a66436907bd4a3ad848cb. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/FR7XS2400001.
Prélude marin (Version for String Quintet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11090892706e6f29163ac997850af4c1a768bc1da69900655ebaed16f4c296e5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR7XS2300008.
Alone in Kyoto (From "Lost in Translation")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc130990ca338398d8d7149664e019975451a83d2bdc6b4de0c0983f02b773d. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/CH0011500339.
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