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 0x14aee0f51bdf0d60915e14b9c5afcfe6fdc1eea27ac97514065bb8eb16e00c1d. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f8e89853-8bcc-4500-baa5-82c7db163864.json and https://artists.proofprofile.net/proofs/artist/f8e89853-8bcc-4500-baa5-82c7db163864.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 0x7ac8eb6a3f1f82e6fe2c6243746b457733f0522d8d5d19bfe28d52f55dccd3cc. 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/HUA182011401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e7a9057ba930a2ba65326126df6363b24461b61d69b6dd5ec340d108191dfb. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/HUA182224101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf20036c86058a8f835be63f22cb7d154a1053f36836c4e419a3fd644b869cb. 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/DGA0Q2300651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3798ee239070066c1e6d572066bb74b5dff553817bc96c9528797bbf6c8f098d. 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/DGA0Q2300652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3ab5e4133c15e4e0402ad1aa6ded349815be6acf0a3a2556371e895a23cb27. 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/DGA0Q2300653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9e123878bf2002620ad2c8385772375054ff4016f46e13947417e317001f65. 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/DGA0Q2300654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd254db8848934d0d5c66c246bd6ed753fa2159f8fbc00d4d2ef0e351603647f0. 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/DGA0Q2300655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14f2cb93706d75fc31717fb1d6d8d5f2169dd1c43568254f86bc2d1aa94aa09. 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/DGA0Q2300656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650e58d1504fbf865b55c07eff030cf1d1f58b0b8d987ee3b4193d53d4e1712d. 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/DGA0Q2300657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f5a0d9e2c06806d297a9d883df4e97a0341763c11822934c0214762e3e0a8e. 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/DGA0Q2300658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de97794ecf0f5f22a3492215ddbf1221fb456d508f22b98e0cce146a08bceb1. 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/DGA0Q2300659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f74cca830969e1aa574722eb920db5f1ca436d52778bf3c445f14558fcccc4. 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/DGA0Q2300660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e677c7f2f8f7f0a1e1d1d47a14d6bd32a96d7b417d82cd6d19a641ddcfe9bc. 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/DGA0Q2300661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75916e4325009d69269fbc1a88e23dec797b697f921222ef2687a87ebc064bb1. 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/DGA0Q2300662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2dc5dafdc81ebb89d25db39cfc0577e0995d1c2e64945b77316585875bb667. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DGA0Q2300663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646b8b85277e6001972f4a2535054d705ee6da319c943a696d304be20c44022e. 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/DGA0Q2300665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95225365b5d1c48a72404d33916916f9882dfcc3f0a0a8589c0ee866c2f895c5. 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/DGA0Q2300667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7251774ce617d52eb6e2b92b6cd345dc5bffd9f5392f924c871508f07174bf3b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DGA0Q2300669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40abc9e6653f2809d56b10df3ded7cfeb511e4774ae2674630c826f5cbc8d1d6. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/HUA182325901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22877577713cd2ddad44cc689a2402c0b3bf8e0505a30b8cddde022f3d42f3d. 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/HUMAG2007057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285fd764cd60681a1da11092a187087be8a25fbaa865a1b53e9399d50d77fea5. 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/FR2X41887376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1616edee5eabc0e01f6bd7dc7495d5c00923f0163b467d9f8193321fcbe2e399. 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/HUA181807701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2796a13eb4397c8a423cf5cb25910ac2c348ab52991293b1745b552abca7ce61. 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/HUA611801225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d086b691e2746285c2dd1aae6057d04245e46274021e3648e34e62ad26e1fa5. 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/HUA611801229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66c832add086f82b95c399d9e60b91d57b8205bbee53f7a7762411a2367f7c1. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/HUA611801221.