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 0xbb6beb81d88c6f601dc4e5e217a08a9970855a40110184cfae0b5cf2d0d19044. 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/28cf2b7c-2ac0-400d-9f35-b908ebba619e.json and https://artists.proofprofile.net/proofs/artist/28cf2b7c-2ac0-400d-9f35-b908ebba619e.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 0x531e634f6566831754309d928f17335e9ff71871a900de8babb58066cae0e972. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:16:58Z), 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/QZHZ51991748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fc7d4874bf10fd2808fe926aade1e515b3bb8292b47029c8b6149c70e679f7. 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/SMRUS0074022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce0902284c2b5dea38735d1085d29ffe453076321c654bfe11e98a2815d3d9a. 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/SMRUS0072261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab098f6320ea8461033913eea5045ec77e5807a6cb82e5c95ecc808afab9462. 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/SMRUS0072262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a173d7179716a96fff9429fa2dd20f65b675e9abae1f7f112803bf53fbc461. 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/SMRUS0072263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c9b3538bd3e3d79a37268e5db86b888a42231339687095debdf57b46c00d4b. 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/SMRUS0072264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a298f87b12c7f7279eef29b42ea81b88d571c4af48bb6b4f725e6afc2762b0a. 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/SMRUS0072265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a761ff0f110903ef373b5dc820cacd562dab079cc70ed2ad29dbc9a9549a4cf. 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/SMRUS0072266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c64ad0f4207f4f7ecdae178b0eefaec1b497b42db9353d2cf408351961cbff7. 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/SMRUS0072267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbfd3290d2047db51baa8f2990e648171486050462c6438d7ce9ae553491855. 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/SMRUS0072268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0412260021872dacbc467cd74af393d04974e56390829384a7e3d2ade77be8ac. 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/SMRUS0072269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf318a509fc98362f19c2b21efd59193af5ed13691b0a78f2bf7835878839f0a7. 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/SMRUS0072270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c88fef86f7db231732a4e16dbeae2ef6f91bf9d76ac0347c2661796de461b6. 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/SMRUS0072271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e0b5294658d6e6c2b8b0718e8ae1e8432ec92572c898114e484afcbade5240. 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/DGA0R2323852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3a48a977dc436dd8aa4232dc686a4ff75ef32e0d86bf7f619af560e42be01b. 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/DGA092376087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ba9b8094bba1cb3385d451cb938943a7b6748764fbadbeceb2b01a64fba2b6. 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/DGA052264020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8e08044494513ab41374d4627e52c71ad182443aec114a78e00c063ac1e345. 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/FR2X42250126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c99e35509053f1ad120a4f2b301c1a9e93e1866dabd2608ad83e9c4763c85e. 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/FR10S2271453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcd1228dcabffa750ec2fece9e1c36f84e000b5946d0e3abade5e7f0271720b. 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/QMFMF2129625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27969be0b4f6c72a2fc0bf446a98d98a226e038d94ded6a5b501bb93c273f59c. 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/FR96X2450504.