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 0x6f66628aced82a82e801676974c3e9aec130ebb9c15fbe24400b77c399f498c3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/260e20a2-6c49-4538-ad2c-948829f9204c.json and https://artists.proofprofile.net/proofs/artist/260e20a2-6c49-4538-ad2c-948829f9204c.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 0x10d650d3050970efafe48d133b86b49bc5ff7c6edb0a570672c5711f71cf1fc2. 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/BCD592300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fb43aafb02368b3097730176012ac9a948280232e0c6d4cf339826db765967. 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/BCD592300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fb43aafb02368b3097730176012ac9a948280232e0c6d4cf339826db765967. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/BCD592300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7f543425955d2aceb9279a94167c23d42c703f5cc347ebb81dfdb1ccfc4389. 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/BCD592400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167995802cfe93ea0cc615ba7a13a9da721a3367241e35436b7fa26621c57af3. 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/BCD592400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05365b40d3bd6c0bf4227955663c4c4d34688e13c3d3e8b73db52698683ed43a. 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/BCD592400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915b785be7d68089ea99e1de5ea26f56d59edda65d760ea01a119062afd4412f. 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/BCD592400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f312037b3722d99548ed83376b367622ae3eaa1198282422bc4607e613529b. 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/BCD592400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c48721f0377c93d55efcc29a4ee0781e40abbf1c5f9abc7b34a229d71a5ca5c. 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/BCD592400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f39276b667c872121220c415ac5817a66662a9783926174b3f74849b987a461. 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/BCD592400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877f59fe5b4a13db3460a2025cbe41a024e78f61628be181f7abef1c09aaf37e. 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/BCD592400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a862cf6caa0a6187c973f9d4d6704656fbe033793fcec3bd5b3e9bb4e7f0600. 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/BCD592400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a5e62c2402a0ca2283cc02189e7f0cdb51e0e7f45d7926170b52d1ca021fc2. 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/BCD592400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e1fb06c9247b1f4dc1e5735c015efe1c6e4931054db49acfd31d2c5eaab5f2. 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/BCD592400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66027186f938ea85e8deefe979c788cee04d04f09809f96cdae60060dea42f85. 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/BCD592400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cbf591033c93118ee5eca27c1aa9bb2a241942fb6187b0498883fffff2ceba. 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/BX85Z2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e7d2cd9a009d1e692d87a44a57ac96edcd3efc1378acc63954345f78853069. 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/BCD592400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2eeea1b3bba3acc41b0565e43e464415bf21a102ab6e964cda564caa90f430. 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/BCD592500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c73f591e55d7876b1a6f9f0bd10ba9aca68a1f31b238fddc0e7a63cef00e40. 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/BCD592500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b677342a95af934e82654174bfc01a166670263a9888f0930d995a86a81d1ea. 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/BC5SN2200015.