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 0x559340d6c02f9afd8ce2f3bca51779006b7e4e08c9d731b2c2d0ac891d2e8fb4. Chain 2 (Bitcoin): anchored in block 953984 (2026-06-16T18:08:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d62559c-0ba0-44a2-82ac-d1a9d25ba0c2.json and https://artists.proofprofile.net/proofs/artist/2d62559c-0ba0-44a2-82ac-d1a9d25ba0c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cold Waves and Minimal Electronics Vol. 1
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 0x8bfb12feb90fb85c37759cd5c183fc4f03786086b711498dc066cda52d45be67. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBHYU0900133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eec8f11c422299338e539077bf929bcab782be56ef1b08c5e057bec9f010894. 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/GBHYU0900134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7f2209c93e635d218f96f729f5c5109050bc98b6af1c4c08b4fd5786712984. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBHYU0900135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00319f1d6b6e18432d602534c81eacf5e1509b95bbd8b65ac292e5216eba5c06. 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/GBHYU0900136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813ed6ae60cfffa485afe886e1440a92b0f57387151890ec68a9add6dad4a82d. 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/GBHYU0900137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802e29b516fa785488ab531207119fd4a9991aa874cd7cc2a3bc124805af265b. 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/GBHYU0900138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bb4764550db6d80a3deb3b4fa8ac8be1d6928771f62fee8dd3bd0e8402b590. 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/GBHYU0900139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3900001962ba54cc12f36f384caa5b28e92d2fe73cf63e0075c334d441121135. 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/GBHYU0900140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a4dc590e206b1bc29157d0d76c93b3673d04938330186e6109e7014f3bf42e. 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/GBHYU0900141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3f77ab9cabc1ed4a42bbe211f9e65cf27eb387d1bac1bae31606e4784f9696. 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/GBHYU0900142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea320179f1c7b7eb2ea900f6907979127d3c6f8b512425deed9b8305cad28019. 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/GBHYU0900143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379f60e182a27cc462f18f15959d5353a630f74159c142c28c370f52290d513e. 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/GBHYU0900144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e2418621dfbed85cf5a247e5deea5f7e7b5041f26dc1ebb9d8fd1e42e7617b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBHYU0900145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cf3d0617bff344731f8d6d88947835d585d70990302a59b1512ddf7f6a81cf. 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/GBHYU0900146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73975f0e59dee01fe620d007e351e1914c873d41422101f42e3003cc6211f3e. 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/GBHYU0900147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa066d9e191ab151baae463fe0e964c36ef1233ab6d81b1122f1d74dd2306104d. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBHYU0900148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d58f867c68bd90d73755b32fc412333a936d4fa063e533899020183013b09fa. 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/GBHYU0900149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3bff226b36ab0165bc6b04b2ea96eb7bc310d2faac28d337b3874196ea981c. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/GBHYU0900150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494c2af6376c2251c4c21f408a499a20c46a80c1bbf30a2c91f1d088c33cdb49. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBHYU0900151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d492a7aabaf92ce3532c1733a395db526379e6826ca08daf293fecda420b34. 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/GBSMU1965574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afe96e8a0f16e7cc97b5ff8ec488fc1748ddcd0fb5e5b328050cb57ae6b6cc0. 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/GBSMU1965580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ced3eb7926d71d9dfc944cbd24de40c2487b07a7f80a9421fb613e8e9eff10. 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/BED338500172.