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 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 0xa0a7962fbe884442025e8591f5e16e7f078cecaf94df6930475c4621617b6c00. 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/a39c52f8-5263-4a60-b5e3-e66ef07b649b.json and https://artists.proofprofile.net/proofs/artist/a39c52f8-5263-4a60-b5e3-e66ef07b649b.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 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 0x8fedbf33dcd17aa931293f9627039922bc7d93401ce5028a61215e42e04ffd7e. 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/QMFMF1399768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1dc63ca1cc06fcfd15cf610db29669bc2bb9eb51f4d95ceaa3dde7a3ae1d31. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMFMF1399769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae04b5f1fa8cc2abc8fab2238c074c02f7903750367742887e278e113e3efaf. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QMFMF1399770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53cfc048683a3549cb2c52f9996185d8e4489f8829b66a8d022574e1639e809c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMFMF1399772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f93f6e0a06ecee5a1bfe700c14ac9064342e1e56ec79d3334b88b365f78aa5. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QMFMF1399773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c8edd5f934cb690974ba8bd80b333cdd18b230f0098edcabe8c1f27bf032fa. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QMFMF1399774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b30578fe249faeac0692d100e556d80e3d624ffd354fd2cd98de0fed557d211. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:11:01Z), 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/QMFMF1399775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb000665c54f6e076700f2af151f4b9d332dc062cb996e6b99aebc64abf361bc. 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/QMFMF1399781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267c34d662d914863234ce5a3460c16aff0728a845e2479c475816841e4a599f. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QMFMF1398559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119378b71a7461378ba80a38fbc80ec47655d25971c37185bb6c122b165acf2e. 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/QMFMG1388801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b05b272e726de2796ae0e1b6f81f0042e2e7715b45d6c9adbc024be5f06d956. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GRMAK1650005.
Earthbounds – The Music of Makis Ablianitis Remixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a67e1c9179ae61cd6f43cdb9c2e1f506d087c21a73eb26489b87441f60f05af. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM6N21929063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde61e54eb50422bb7b24de7249ff20fd957ce00240f055b8a39aba45f74298bf. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QM6N21929065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c07add64b963373f98cb5a73c35925702db72aafcb795de5e6b06b71e72bd0b. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QM6N21929068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c702c183a1e2a40bd0cff8c375e7176ecc6f434aa85c7679d5cc12f9e021bb. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QM6N21929069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0254acd44a82000600ce138c404255a4738a7bc3db8c2a995110f4cdb79817. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QM6N21929070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653750d8b79a04c9b96ff0ce5992794b33631077c77a951a16b390d7b7802f6a. 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/GRMAK1650001.