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 0xbb7e81ce366350194f0be6f24cb69dd58b65a873c847e46d1c4351bcd450dc0f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e23339f5-067c-4db4-8de8-e8eca65cf67e.json and https://artists.proofprofile.net/proofs/artist/e23339f5-067c-4db4-8de8-e8eca65cf67e.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 0x0dce64c5df80dfae6770e041acc76add807d6864f176d8740cdc33aaa8de8379. 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/USSM19917554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2cf6b2538d4aa531f13652a39922fab961d07055b1eb63d3a2dbd167bc7ba1c. 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/USSM19917555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e1afc3559634dc9636dd3bbf712628cbde779fc9ac72a362b27ff95a314370. 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/USSM19917556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d3edb11b27b36963ec5aad5ba51d8ab812515a990ec4cf7bb9c67b0ff32229. 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/USSM19917558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4569c67a2a04df183cf24f11997dc754a28f19543f4e46937680e59868cd62c2. 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/USSM19917559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2dff3c0b23ef21913b4fd5a45c618107b8e36e6b84fa4f00315e55fe7af41a. 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/USSM19917560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45064fa728c9772eda6386c146aae1cd0aaec04ef914b1cf803e9c739ff2205. 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/USSM19917561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0472a02c7d1bd844b79c9400db598eb9e0a33a7c898dcbf9f8e758bc6bc140. 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/USSM19917562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c2fa24dd9acb81d81f29effc01346c9bf0f5bec2afec32cccb4a0c0698826e. 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/USSM16800337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f0a92f1ad2a071d461178b9e6f8e91f569148696d46d39d6ee1873042aa34f. 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/GBAWA0515374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f0558c44fff11189eb18db9b8ec3994598ed7a7497fba99e29a2f7ecc97e0d. 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/GBAWA0515352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087eae0a6305289b48a84420cfe96d21eff7a7d5758ea1884426af78dfbaa4a7. 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/GBAWA0515208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fc919271309d58eae963a9b011beb5511a06d74d07adf710ee109a597d2938. 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/GBAWA0175537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3474384fbc486e2d84f531abe4ca22bfde08cda0e2ec7c0a767eded694549a67. 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/GBAWA0515363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bb12edf423e80283157d163da6664aa3e00179d28bb1a3a932ad23d59367f3. 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/GBAWA0515438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a27589dd096f0fb9ea63fbb749fb389d4475209d4ba18b9cc7f3b5d17d5c939. 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/DED460800192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24597b8fb51135156d80936d52d126348c4566d1ea9a7911f7a3f8de4b52f9fa. 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/USSM16700303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a1839d6c4534b7c836cfdb779c1d5825804b015f158b03dc8421eae149ce68. 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/USSM16700012.
Halloween Classics: Hellbent For Halloween
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586d390637249e1ffc7b57d97928857421bbb7ee484c1d0ef4b9949ce199540e. 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/USSM19200799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68347579d9658899be706229d5fe3e34a285c1f28099d43eec7f38a9d1fa08ea. 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/GBCHB1800024.
Haynes Ultimate Guide to Classic Anthems