thumb|Rockall, an islet located west of Ireland and Scotland thumb|Bàngchuí Island in Dalian, Liaoning, China, is a typical rock islet right|thumb|Mōkōlea Rock in Kailua Bay, O‘ahu, off North Beach,
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 0x81f92084e7a3f6bae6492d401302fbb127149fc6e0c609516f05be8933911ba7. 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/8e97a20a-71c3-45c1-a75a-5d2499d61d00.json and https://artists.proofprofile.net/proofs/artist/8e97a20a-71c3-45c1-a75a-5d2499d61d00.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 0x53a730889c5d567b3d89829d2f848601de20d9ae6e06438c2ba15e3ce9280923. 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/TCJPI1995968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319c3412991d8098ccd94c9050f243fe95a98a8290712335b591d55ee15d9504. 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/TCJPI1995970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0aa9d9fd9cafaf70cdcb50e3ef6cb3cbc1f6e5886af5ff29d45e6b8b6668e8e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCJPI1995972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62626917762bb9c95ffee86ffe36c0f14c74502e3d3a6661712901bda95a3dab. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCJPH1883142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57a1543e0952e54ee8730dc68b2591306236838761397a3dad5afbb2ae016a7. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-21T17:21:32Z), 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/TCJPH1883143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3544c1766db4e33c7170a6adc4c0f8f45238be2d0a2bd47929cc9f04adc0a1b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCJPH1883145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143982984282ebb8c9648d04141f1f3fba0eec4fd64e2383281e47a465e87872. 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/TCJPH1883146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6072bfcaba63030cc30ccbc6f85284bb2c925d514c55e58f4a9fb11eb62f090c. 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/TCJPH1883147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95a21b5239f0951bffc0737d0329bec271e42dcde99e2eac6f5d047b59b99ff. 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/TCJPH1883149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4368e74a2e64dcb99b92651b36f551ad8bcb0af040404d2c3dfcd201740983. 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/TCJPT2290695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4568f0957491352f719b6acd7fb98d6aecfff146df9e69734c5ae9399b4e12f0. 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/TCJPR2262445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a52b0874f1c5977e05ead4de187b593739a1b116f1c779a2e7b4a47b5768e9b. 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/TCJPR2262451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe339de294acdbaa410e1cc2a0db7e4b7cca6fa357c123664385e746b3f485455. 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/TCJPR2262454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ece3eca1a4435b98373dfef10c1aefb92b6fa87fc4c5370be44e28057db3a1b. 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/TCJPR2262459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5a4fd27e5d8a059216939ffcd25eaa65fc92a460f68df42d598ade1e4a42cf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCJPR2262460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5a9b4ee4eff186f142b2e07bae0ca4912c2d10c48959c0f1ea3e8f9a5d4c01. 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/TCJPR2264178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088a2b09baaa999c249969f5d23155e10e382e98bbce9cea8e4104889c799f11. 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/TCJPO2136129.
Watariboshi (feat. Sando Aoi & Younagi Yoru)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb865f1df511ff6109fb4a937842f67bceed8a40e7a83356488bc5588e5d42e76. 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/TCJPM2006988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5585d9b3d737235626a21b7c7211a2aac399d6174d5f9bdc9f5e3b2c0d7d6bf. 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/TCJPK2055106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56cd793aacbf81ed8dcb86efa4eb19d3ae56719df9208580f08a910769efeac. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCJPK2055108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2d6038ffcf6bffc747706774d757b249c3e3c11610582d4a02a8c4f1ed1c51. 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/TCJPK2055109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d1cb0266c19ff3e7c2270948fe2e7cc18aa1ad756d5f8b39d0a82eddca3dcb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCJPK2055110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3651c85dfa49537c5373b64ede2b9b3a3252251e4d3e90f2f45426bf5500ad1. 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/TCJPK2055111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72109c2fbfae98a6b5d5d18629ad597185999e5024b0ab8292fab2f0342b909. 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/TCJPK2055112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291abd37bb41fa9e9799c63468b6cc9760b5025b61ee912f48ddd013bae20e36. 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/TCJPJ1974946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce55d72c64f4542fc985479a92087b2ef90d10615f9a5ddd8687d481428bd50. 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/TCJPY2479459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56d150d3e3b74e0516fefb39f195d955831c1f89f0a35488571424705d4e77c. 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/TCJPY2479952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e56084fc6e5d6f3850fe8e098baaa9b9b5627e24196de19477fb8e9d05f6bf. 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/TCJPY2479955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c8eb39a44f7a23c75b63316191592326ba4ccb7ef78291633c0750f29e7ea8. 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/TCJPY2479956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3419ab84b2cdfb81a646ac9aba51f33b29b3dcbeecbeb05b3c614843a2dbca9e. 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/TCJPY2479957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d2a587c1ebe9b1a9dfed98e97c7a05e634c5bf3276a26d038aee08a83005d2. 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/TCJPY2479958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5aa0a60feef4c201040e4337657f40a430b60d0064e47e9eb0dd270531d52e. 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/TCJPY2479959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358e2b6fbddb59a30c2cfdd5b993a33b2e6c0eaded2deff71161dd9749fcb34f. 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/TCJPY2479960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3318eada1f5377d8a4962ca3844dc5661f51d0782a8d838b19ef8bb4775594c1. 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/TCJPY2479962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46b5ae4af55cfc9a80e6e7f4f4345d57d78571bb1501166a5e65199c0ba6b51. 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/TCJPY2479963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a61b213c3711e7d220d74f5b72472d8db5c461efd2e85ce85d4445f459409c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCJPY2479964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa92dea5a067e9d3675f3ab062912cf158c13144e097c8efb8584e198ef9b0eb. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/USL4Q2435646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f1ad20c361393837b96c2f3b201cf5fec3b7d7bc286ed1d021db15aefe91f7. 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/USY242432192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e5c579c827712ddb58519f279e1c05a761e3e05d4e883b0ecb1b93b9433bd1. 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/USY242432195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df0f2d76adf83f9b78b90a8a0dfcfe9c43ea6f2ff516b9b7a77306b0e972772. 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/USY242432197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa92dea5a067e9d3675f3ab062912cf158c13144e097c8efb8584e198ef9b0eb. 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/USL4Q2435646.