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 0x821f0f777fb161655c62aa3d996fe9046feb6d705098a914ea47047e9837c03e. 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/0c42e4c6-6c19-4e2c-861a-336acb139e9f.json and https://artists.proofprofile.net/proofs/artist/0c42e4c6-6c19-4e2c-861a-336acb139e9f.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 0x3be43e0b94e98124af66f50cf776c409499f1465bae7cee8f86e61d2ec5f0560. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GBKQU1517278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa73dfb3a1ff4f6aa0382a93ecb62c76de150db13333bb5bc9ba17e8e3c7387. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBKQU1517279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f1fddb28d059692030b68af968824e449233788d07c009338bd0a3e7082a00. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USQY51557509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d26813b4e656a59732af0f03d3c0ef58d06cd566adc278bd7414c2cf770dac. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBKQU1881264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38da291f4dd7d65535bfbfb4b2ca0e0ecac9efa73d0b27d4bd7a6042714800f7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USA2P1867377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8859dc426789c54088177e57ab8f5c50ac11d5a6d51b78135ba9c75e9743903d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE6XY2551524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0838bc6b85d61091a5c7deb9a14992be4f0d6dac20239e81d3c31c07c47a64. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBKQU1590578.
Square Stomp - Outside the Universe Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bb1a7e60f0db3e73ce7927b8f6e61e193182fdcdd66872ffeb6e447aac16c6. 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/GBBYB1502367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06894526664c8b4fda37fd08d1005aef905643630b2514870d1e3d0656afb1e8. 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/GBBYB1602674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4d786280e5b14b5293a8c1958f5600d8c6db18eca9a54051ae376b993c2111. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ARQIW2502556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487f5d36da6a017d06a07d18207f07ece83d53792653aa3c028ee073044b5e82. 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/ARQIW2502559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81df2083493a4c10f7f7419733e9b52cd7ee58257174cdc18f4da72c60251db. 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/ARQIW2500357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1b9f351ab3e9bff1faf8853a955f1e925bbc235ee53ff243f47713360e9454. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ARQIW2416311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d1da27f0a68992a8afdef6a6c88411f58ac4511ce1c97510a4f509f8f946dc. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ARQIW2502555.
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 0x06129810156ee1610f175634cc455b7daaf93a54a9d97e30fc7c0ed68a926fbf. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/ARQIW2502557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43259393fe07c9e46cdc7b6f8f8c30b65789e2fffeddef88d502a8e02dbfa08e. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ARQIW2502558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261f14a4c5fb016788600249cc5cc59654fadd359f25669866a8130045972de1. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/ARQIW2500358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bfc46ba313f50c13f811f2863299f0ced28991aead4b09adab2517aa980334. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ARQIW2500359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff70e2e6d87781697d5d19efd708f3a6af20bd730bced8b1881ce0bec90b1af. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ARQIW2500360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8cb7c9f7f841d46ba5d1250ce5cc6765e7bb7af926d3ef05b25c2314c4b494. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ARQIW2500361.