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 0x22d2111c56e964421fec9da37c6ba71ba8adf13d8551e363237629f23262be85. 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/410d37ef-e8f9-4b05-a233-dbebe874b865.json and https://artists.proofprofile.net/proofs/artist/410d37ef-e8f9-4b05-a233-dbebe874b865.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 0xeb75a355db82f499d2b8acd37debdfcb8310426004cb6f8648db95a51af3e10c. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/KRF452200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab4dedbb18abc41ea7ba90293a147c9588f141232f1ffd49acac1449900c4f5. 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/KRF452200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f26b746b0c268036fa255975aad171a27ab7aef7cac89ff07cb31b3b664513e. 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/KRF452200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05abbe4aed835b7f4f9b841336f5138b6764f2db82b2944101c302f6d8e287c. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/KRF452200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7d2cfefc29c30d9b80d9d62b2693226024ec5fc3fcf13bf1254bbc70b71fb4. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/KRF452200061.
I'll Be Waiting For You Under The Willow
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb248a5a448dc7e626158d6b4644fb1db2e1e9cf954aec5c074e9232d0a7ada37. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/KRF452200132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c326b015c194f8028eb170f779b385937ff22ab8627175239e607a2e9f7c43. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/KRF452200136.
A Flower That Blooms in Winter (feat. Celloboy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0313e007b898ede6b4e25d5133674f1edb501000fd9d13f0bc6d43441916093. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/KRF452200141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157c1f1987afff8094c13e939f6787830bc2563923b15c06b280ea579f7cff19. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-02T22:12:38Z), 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/KRF452200142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26a91ba70eacea800a1d2d9820f08234532addb9b8b0fb349a938e3a5d67c9a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/KRF452200144.
Newage piano for my Wedding "The Wedding"
Sentimental & Oriental-Style Newage "The Moon on the Roof"
Constellation : A New Age Piano Collection For Summer Nights
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a65c4416dc5a11f633cca7646601370ee1f8374670a2148cf5e756d6799ce1c. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/KRF452300553.
Footprints - Piano Collection With White Longing -
Trip Around The World With 'Paesaggio Italiano'
Beyond The Sunset' - Anime Piano Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffc91adf90b7086e88b1fd5cb329ad5b34f85331b8d53ac665fb42dbd72634a. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ZZA0P2404017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0da28d24c6cee2ba29641e6fa2996f6345406ccb79064026d58ac6c90cbe805. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ZZA0P2404022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be5f3f288fe48eecff800de4cb818d341b81cc23507d247e04cb51b4359e38d. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/ZZA0P2404023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86010e511cbaaee24e8bd67a88e2f9e3685ff63be5459918431d0fb34e670b6b. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/ZZA0P2404029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5571d2f023f79f8d5e4ee0e24414b19eca194557a7b1178f321307d8b97fe2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ZZA0P2404041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f979c83ce4795f94bd5ddf1f2410bb68345601981ab5aced7fd55e80a65bcf5. 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/KRF452300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697e5ec33f85603250631804c12f1b2a01c7b7c9d48832b0376b99652e2ce3b0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ZZA0P2404270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb568ff765d0c4e69be8e97ed46906c4f2071f85d98dddcd621006e1b6b0bc985. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ZZA0P2404309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212fbaa04e23356b7c781a0a6360ec89c50b8c1da92d59d52488e1d538d26677. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/KRF452400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b44af9444809cbcbcb8e36c9fdb419d64bb1f4ee0170a9213cbdac1c2120102. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/ZZA0P2405057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938c8ede4568adbb9814edef9038ea43a0ed9874fba212704d13fd6f8385b5b3. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/ZZA0P2406301.
Our Blues (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0788ea19f41776a18590bf7d1ef889afab532a230143434d32ddb5eee4c3d6eb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/KRMIM2220731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff77d4b48fed926fded11b4b85f3d859bd7a32acc754813ef9c12022a0669cb. 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/KRMIM2220737.