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 0xf6d270bd5c51d0022024d9d225f2ef339e26a2b33c1315bec33de9b8a8caea15. 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/6613dac9-86b1-4df0-8e65-74970fa2f801.json and https://artists.proofprofile.net/proofs/artist/6613dac9-86b1-4df0-8e65-74970fa2f801.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 0xd03414592ad90a184417f65aa1d75052640c9489b3dfdb22517b81d1e3e2eae8. 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/PL21V2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249cde5f662970d1feddc7b21ad9feabe0ab5ca1b970425ede366711113af253. 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/PL21V2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a407a07023da38af87bb212d1ab09f19c3a974217fb3ed12882f59d028c4a3. 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/PL21V2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a407a07023da38af87bb212d1ab09f19c3a974217fb3ed12882f59d028c4a3. 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/PL21V2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc08e3ca77195aa4716794eee1dad9eaee155fbb5987d635ff6bf76ebe02274. 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/PLS502300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159c841176ab0cb2cf0e3237d47a081a0996bbacced5aea5c370359baa3efded. 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/TCAGX2371907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ede3d02259f4ed77e57181553604d7979d7ddf9e008ec429fb170c1880cb187. 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/PL37I2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249cde5f662970d1feddc7b21ad9feabe0ab5ca1b970425ede366711113af253. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/PL21V2200001.
And We’ll Fight Forever, Till We Die Together :)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c58a525aed3556456daa7392af4aed604a77b53245f470eeb52f1aff284aa12. 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/PL73T2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0440fe2ecdac0beb3384b1099deb3b2629698aadace2e5d6237261efc08264. 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/PL73T2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09c416877e02ac83fbac337b851e4b5a539225bc496f7197d6a8582fe7b6871. 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/PLS172000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8370e0307a4720b9e05dd94f54abeeb49b146793b668eafc0f17ed74f355a19. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/PL91G2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4631ebffb1ddc76b530faa6c61c3553aeb8a4a2f0a7862cb39b99ddd6f930b5. 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/QZHN52145818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6238f907c3868264678c438e28af8c77aa26e004b4e8fe6c896c1d9060f66d. 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/QZHN52145819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fa7c75cb26446b131f9cede9908dec6fd30e3a881383d02352e7f831b25a22. 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/QZHN52145821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f70dde06d6f83e8cc367e2844d9cece21f27750a7db9570a3ac1ab1df34e31. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/PLI365715620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632e0f6c2a9d2dd3a197af5f0265ce2f62a79b7f92f4e1db4a266e172c275e66. 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/PLI365715640.