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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 0xb9c8e139d3b80fdc3d12b45f6e02f4b24a5e6e5a879686ebc904baab03785358. 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/083970ac-770d-44cc-bffa-42148ae97ef2.json and https://artists.proofprofile.net/proofs/artist/083970ac-770d-44cc-bffa-42148ae97ef2.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 0x9736ad01d570abada64e725211c4298b7246578860e950a3a553e8ba18f570d5. 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/NLB932002301.
Holy Ghost (feat. Jon Harvey [Monster Truck])
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112e59cee53caf10b4fefbf79ef1026b446df87183f83650345d44d72f1feba4. 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/GBDHC2122507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cfe25d3a1f98b53b12da1baa77b4ea4e6f8f576104bc372764cde84c30338e. 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/QMRSZ2201263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70a7ea09698890e141f1f1c604c6df338422fd924833cbf082bdf689d52206e. 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/QMRSZ2201266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085f276e33c8d889deeb5438fa33a35990bfa158629e0c7c39ce390f415c6ef7. 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/NLB931800901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ad698b50e17a1ceca5ee0e84cfa401c96a8e88d026f89756a7992866d9b5ec. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/NLB931800902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327390383b055e5441f51c016325977764a58ea110924970885ea29622d65014. 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/NLB931800903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe345cd5a02ef2ced4ebe676f9488c5b40706aff992a23e2096418b43cb234131. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLB931800904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f8227e8237603169d3b9396d85e2a6cac874afb8293a522daccb5bf1d3c55b. 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/NLB931800906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25a1c06cae523f396a351c67f9ecd580d47f0d67be546c8172a695b0f5c4d7c. 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/NLB931800907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f40f879b8566722adf13a0850bc8e71fff6fead0b3c7b9c4c76031f3d877cba. 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/NLB931800910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf465f0f20be47949a15f2d486f8a303b2fa086dd3ec6ffda09a943a2cb66e0b1. 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/NLB931800911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec07724d213586b2311962bc5e8a6ee5bf736878b617961f955909c6e06a7dd6. 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/NLB931600301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d559af8c3ecbdda0c74d402e0047d7200716da5faf5a9852c77f8d17e035433. 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/NLB931600302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fb608eb60c8ff3f91a0585d8db6008d15466b69c4a788576633ccc9820748a. 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/NLB931600303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61468078b192be96b82f80afe79e00c019eaafbbd55627a50da94e559a3f03b4. 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/NLB931600304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1159d636182d60a4724cdbd7add3e6b7aaa74231ed3ae3c460bdd7eac5e559cb. 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/NLB931600305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89adfb243a902a60d175b8713ed7045fba25dca25de37d54e5aaf6c45a20788. 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/NLB931600307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb1cd1b07cadbfd0d627aff88eae9c816c253fe449f7e3aca339ddf32808b33. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLB931600308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac882701918aeb63ee30a1eff888893d4013d28200f2745f43f971b55acf30b. 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/NLB931600310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc046526e8ff4a4b997eea8242238dba60955b81264007a635a2b95b730fbfc75. 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/CADE70901202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42743a6d9add3a49da2f32b8d89226a5907fd7a1113c928abf1fede16a25ea28. 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/CADE70901203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510bd7eb22beae84b123c6608d900c062a8b3d0eabe837ee73eca8b5203ea332. 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/CADE70901205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0666135398339e73c0d7de80a9975f6b39654b379eaae6fa6a117678d68bb789. 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/CADE70901208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292a421fae2629374e4bdf0c67fc4ae592c8f9fd41de3fad23b38825b7c1b71f. 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/CADE70900800.
The Major Minor Collective (Bonus Track Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112e59cee53caf10b4fefbf79ef1026b446df87183f83650345d44d72f1feba4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBDHC2122507.