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 0x8956fd8aaf1f486de326a26efbafa1905067d700d6e8601055636c734e06d7a2. 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/ccac4f9c-7fbb-4468-ac6e-8c1fbb25e611.json and https://artists.proofprofile.net/proofs/artist/ccac4f9c-7fbb-4468-ac6e-8c1fbb25e611.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 0x216ab8078a9a079cecef601d3c4c988cafe1374e9058009064280833e8a574fa. 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/BRGOR0400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7682db33bb75758891d3029f81139b37363f3ba07c7fe6e1ec8ac025efb94cf. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BRGOR0400112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb360310a8a9ee5ea058223a41b27237317cbb9646c3b5d349cf23a7cacdf43. 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/BRGOR0400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764d81853c901aea713083f50def97c879890fc0342ef7752939636293f68bbf. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/BRGOR0400114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddf11a1959c1a8e6cbb44f15ad5ed7ca9f60e5f2fcd40c039ed7e0c23a286bd. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/BRGOR0400115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb46872d3ee85a700594fc2e6908ca75e31a6a3d4e4884a204e501201b9436e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BRGOR0400116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac70bad85cdd167c2084523649b615206094d467cd86139844022c3c0f61d859. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:36:59Z), 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/BRGOR0400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6644ea0be70a7ca8c9f05f05c08f4f913f618cd3bc911117f63ee551a9db7d10. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/BRGOR0400120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0c4410163daecde6f171a49000fa6617c0c01b24edf4c11c51179b919e72d8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BRGOR0400122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d7967f333d7ebefc26c5e419541bc4259483d2e122a29e322fd937af8db6ea. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:50:18Z), 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/BRGOR0300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb589a4459391013e80bb02c1f6f0bf316bdbb7b4e6a481e85e8cc4e8cc45e948. 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/BRGOR0300171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9543891d0a852776b913ed1bcd8c4196f9ce9b2497f34409849e97186e89a86e. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/BRGOR0300172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a5d8f5ea8e66f165e0278e9e5b7cbd4db6bbffad7763ba9e945b54799c4e22. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/BRGOR0300174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5761a616ec14ebbef6a4353c363572a0fc09fccdc61cd8af9a3a90153be42b. 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/BRGOR0300175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26aacbc893e833786c4703b23e646f4e11ce60a5508d9c8e8fc9b13eec6a39f6. 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/BRGOR0300176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c491e75194404d7d9a60822a65cd810da0cfebd7fb3339e9bcea8f9c418706. 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/BRGOR0300177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d17836a4d46064e0a45b30f67d59c8f22b3e5d7d4f889ed642685bf2c259bd. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/BRGOR0300178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9599a82a1b5fbb28f00cbb3c4ae26917ed5d454f2ed7deba79a40f83edc5eaed. 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/BRGOR0300179.