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 0xa0014e663f0eb7f8faf5b247175c93c5157137dada2d2ba203eaf1acea46b0dc. 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/8e71ef5d-8dc4-4de7-9770-a8babd5644c8.json and https://artists.proofprofile.net/proofs/artist/8e71ef5d-8dc4-4de7-9770-a8babd5644c8.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 0x8fbb8547cb1defddcabceedd947169322d9fb7fb17fd0c06bb2d585d567698f7. 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/QZDA72133851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906a390872a5178f23e4ed6e0127981d521d556e135c9d561ca0c1d07564e9a0. 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/QZDA72133852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a00a9141b180ede206dcf017483b18e4a19736ae922b01c435a520d2c2a8263. 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/QZDA72133853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8e615fb25a9f1fcd9e559daa9994c1d1f6d9db40e288a278d70fb7fc5e9257. 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/QZDA72133854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de97d284bb8cf527ce0b0b79ab9f27f49ae6f975daef56e3a42d52bae6ad406. 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/QZDA72133856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee6f99dc202410b63ada86e19143b3b5d73928645f59f9042a3864f6efc98b7. 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/QZDA72133857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50479b2e00afd21b6408291c8a6f17c49df7a5bfea038b13499d457ad507e4f4. 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/QM2PV1506969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22a0c892cd9e820062cca751be501218b31d0bcdbc59ba159e3a553b0331f28. 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/AUMEV2506378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9dda4d1edf8e0ba62d25a586514a1fa7352a7909a3e9ffc6751aff0107137ab. 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/UKZGC2410693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d22136fd07f5a37bcfe45c59c2d3b0bc69ce2ae1796297d17a0b18aa1cb970. 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/AUGBT2481853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02be80754896031652fda09014c6d450fd69a003b8367c5f0a6105a06270b054. 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/AUGBT2438695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae4a2cb8794097f42a1cd964b11aa1cb84cee825179f5bfe356cac2bb361dcd. 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/AUMEV2469937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7d479bae2497a90b8cb91eb5186062192449a48acd6009dee769b53d0e058f. 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/AUMEV2434313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf04ae41568853c0e6520ba46953f46a0bc81996b17e561d46a046258b11bf4f. 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/NLAM42400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3413cab583101c4c6ca44a5451798d23f9106b1400f4b531c6a03b8433a86ebb. 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/AUGBT2362832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47cf7dff68b751d1a05be5a3a6098d0c1b6846f66529452644fa0baea0768ee. 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/AUMEV2361416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1dddcf38fa82120540706674a50083cc59a338c60546fd755cab69c632112c9. 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/AUMEV2336288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1855e8ede725a6e9885d662958de343c9e3e20f847d3b905e1caed4e84f454e9. 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/AUMEV2310528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2830b45b302e23e4edd7bea6327f5b925601ae63dabf95d0a0fa9391888599b2. 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/AUMEV2294728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde4e56001aa5be59ea39bc51eb6c6ba0517b7016ccd82b802ff37021224600d. 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/AUMEV2263599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd5939845a57af6ca2aa86f4486de07621bdb1ab86ccd1f06737e2756a8695e. 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/AUMEV2244977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f863fe56cf89f3f1d7b23d2f9f2db2feaf1fc82100efb557ca46e9831f59a65. 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/AUMEV2231038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873edcace01e9333f20e2b0380fd53ab70db16f8dd4a482909fd30ec5f7a86e4. 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/AUMEV2226874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1213bec4183ed247ec5f9692aa526eada1297c3e894ce349a245ba14e76c6cf4. 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/AUMEV2204580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110fe83aa5b31acb8b148607fd5ba9a84a6ff5d206ad0feaaefa3be50ba85949. 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/QZHNB2028643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011653ecc19ede3ef883cd11da02d4201010acdd64868bb4abb38b6e7376e232. 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/QZHNB2028644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc15a060e453a053f618616bb5d5aebf6caa71b9ab43c5b941e2948b8e6ef74. 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/QZHNB2028650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a73091a6564d7cb010ce57725a1e6401120b1dcaf874f4f27b87e9c4129394a. 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/QZHNB2028652.
Journey Through The Seasons Piano version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd165b9c64864970eb682fd820585a618094dcbd110432d9e9596e3c9df4b4947. 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/QT2VB2501597.