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 0x52f3736ab931ea89bd86864bdad659f440cb29927519669bbfabd6009e415884. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb8c07e4-495e-463d-824d-a1c236fe14ec.json and https://artists.proofprofile.net/proofs/artist/fb8c07e4-495e-463d-824d-a1c236fe14ec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Song of the Guitar: A Grigoryan Brothers Collection
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 0xbcfc74cddcce7257233a934e8a0c76340b8dbf4607abf234264cbe4192a5bb4b. 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/AU8B01100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7094c85adf3362feeb0153f07f2ca745010fb650b32c429e621d84ab06465e1. 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/AUQY20900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8f58fd1195bcbd06abed158ab49f060fb530fd90cc700b837c99ac760d9d9d. 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/AUQY21400183.
Cello Suite No. 1 in G Major, BWV 1007: 1. Prelude (Arr. for Guitar by Slava Grigoryan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda24ebd1eb4a41e457b90365396b63858bb5c53fbdd91dab9705787c94e5543d. 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/AUAB01650508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3922e93c02229b2b7f7f38b78974e24d84f4e7b7eba2b69e6e82c4855084459d. 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/AUQY21400193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84be2456f77ba9c1cb504dd113c82a0249de1d7f9b84342dadb7b5174f63ae87. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/AUQY20900025.
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
None But The Lonely Heart, Op.6, No.6 (arr. Edward Grigoryan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee112aad8148ab6c34de5bf56bbce526d6aa21e2e10f0d6992e86cabaf26241. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/AUQY21700199.
Cantata "Ich steh mit einem Fuß im Grabe" BWV 156: 1. Sinfonia (arr. Edward Grigoryan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56bce120a46aa4c14631e259aed152170a66fdf382a0470c0c40866836b6a154. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/AUQY21700196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517fa05b0dcf6c9d5884cafaa0080e0c566768c0e2fddb2be8d862c71ef6fa80. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/AUQY20900024.
Suite Populaire Espagnole, de Siete canciones populares españolas: 3. Asturiana (Arr. Edward Grigoryan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d3c97c6ac15eaa5a6d7cc3e2cf2a9410c8222ded32a07a2dc3f29c61ab0477. 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/AUQY21700204.
Suite Populaire Espagnole, de Siete canciones populares españolas: 4. Jota (arr. Edward Grigoryan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4676615a112c90ed41bb33363a80df59e726416d07b9211d584c733a4bdc62bf. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/AUQY21700205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e59ba92e1204c0430ad52a3afbc096fedf5373187e282490262c0f53162985. 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/AUQY21400182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac0a4ab5c7aa9fb062598c56ce77a2222e7c807bfdbfe0f6f01fa86d1608452. 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/AUAB01150162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0ae5c5c9fba2b48f4e1a22adc5d3d18b58f4a4968a0a436ff1234536b3e426. 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/AUAB01150163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4e0626b48b5af6db8aae2f40177897507e7a13fbcc3624e77ce899de8517c0. 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/AUAB01150165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524a662fa94e7859b5d493075f5ec31b5bb4f7bdb0467e8354db4ac06d5b6855. 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/AUAB01150169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae95fd97868917db4e9a5eae1872ca8b57bf4fa3dc4972bb3ccd1efd4670d2de. 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/AUAB01150170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2b2e4066220286db3d0fbde19b69d23ab9e16b94a3b5dcaf824fb0a3191f18. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/AUAB01150164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad688ddb9f9b3e1530fb158e157de64fec3163d6fa97acadad241d05e1ffb06e. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/AUAB01150166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0983e52f0f1162d61f9da1caffcfc1dd90a6d5fa7781f9ee928520654b2c8c. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/AUAB01150167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebafed47b5f60f7a5e49af3e7532cd91d88ea932300dda522667e6ec80f1364. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/AUAB01150168.
A Boy Called Sailboat (Original Motion Picture Soundtrack)
Song Of The Guitar: A Grigoryan Brothers Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4acd820ad83882a26e1e445607cbfc9d49b88297efc6d5756f18cb6e9b4d65de. 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/AU2DY2400131.