1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x8669629a4ecc439db8898f2016af924ac059604edbc6d3d48a58719aeb48b34b. 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/8a5a5ec6-d72f-446b-9dbf-f80f33bca289.json and https://artists.proofprofile.net/proofs/artist/8a5a5ec6-d72f-446b-9dbf-f80f33bca289.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 → block OTSBitcoinBlock must exist at that height 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 0x40b14abef48a2b5381f015a76f0c805d420f42ed057276319f4db676fe4a18f4. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/FR6V81581901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170578aa6d357daaff2305a46a87d6974b858d7a9860bf3dcfd17f3778d29793. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR6V81568108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2a4742d0db5db674a201618d9f9f31ee206a6cb8643e252673a5f960c9ac5a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR6V81568109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dbf9587c6c86d58f02c193a0c465c698152a15bfe3fefaca9a98c1a5526095. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR6V81581760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc78cbaeef44226e52dae61b5e02fc54131ef61b3a9dd5e68e6e037dfb91e8df. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/RUB731300211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367ee3dff5fb052f831eed410f8005cdfd8b82a5c01145a6ef7d367075ebdf80. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/FR6V81581910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5a22b4a5b25b41f64b9197d22e461309b03d46384ff57283d1a5e31943ef1d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR6V81581902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c97fc15baa773ceef205c54ec167544e1615d2f4b4c9e2a8f5663d63f9d2ae. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR6V81581905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e3c43015809ba1e41876b6067f6fc966806c58ca8f7ed93fb546560cf0a9d2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR6V81581906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57e8ef6dc0cad948794a25ca16b18e780b1bc0b79fc7f008f670333c28254e8. 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/FR6V81581908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8542726e8a38b2353468eb1683a5b1447c61f8d570be83962e05697138778b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR6V81581917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211e00fb33d33ceeb907e54b8e744e53295aec826e290ae816394efa9e207037. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR6V81581918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770b60683ec02d149fe58fcfa522e3d8085016a8eca4ffaa55399592c6f48d7b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR6V81568106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e7f5dabfb2249a2cd5463b67338949ab2f929be3aae472f3801032e8fc8be3. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/FR6V81503114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6147e3a2e15d3edf513a934184459e0141070813bd514f6fdca8d34ee24b1a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR6V82056078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f193a962573d3d5141048d4d17550c8563d3b93f24501b41dd7ca308d0af2a. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/FR6V82056083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21d2d63715453c800404532f68f83bdbd9771ff57a6e52846bd57e5bfb38518. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FR6V81568100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c796353c9e1d10dee09b2dc8458442a0ed0d6b1123056adf63feaa57442aff. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/RUB731412301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdb76cc08fcd216582a87133b4e2ce646c4bb6267cd355f9e7ccb7263fe7dd4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/RUB731520039.