Fentanyl is a highly potent synthetic opioid of the piperidine family, used primarily as pain medication. It is 50 to 100 times more potent than morphine. Its primary clinical use is in pain managemen
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 0x5350d4d0537b2872545d1c50801ce716428c5abd798233bdc850f1436b8e09ee. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41f9fb48-a83e-409b-8457-aa2d3ac7122e.json and https://artists.proofprofile.net/proofs/artist/41f9fb48-a83e-409b-8457-aa2d3ac7122e.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 0xd3e645e853bc3014263eb5036a7c8ca2e85074906539df54eded9a92c6285be6. 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/GX8LE2399204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b965de77602dd91a96f90b44b5f94b8dc50c8f853d6a4a11ec1bd33d9f657d6. 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/GX8LE2377618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe66a5c637f8393a7751508b3f38ee4ba9803335373ce936a6d2341abb623714. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GX8LE2386791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d63bd90e02f3dfb3d64d5ef8cd7239857d86b7caa22bdfd94ceef678088f2d9. 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/GX8LE2359784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1964e105f8e6940e21fe6d584fdb6ae2fb65fcda92d8fbfa67ced59a1924791a. 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/GX8LE2368904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebe01b3344a034733aeb0c5f526c1b6a3ad5f27516b08b1effeff360f8dc887. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GX8LE2328569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bbf7bfed63b449fced2ea3f67a62bba7becab1bb30b491d2e22c9b54f617a3. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/GX8LE2342422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd33918e4a1335e095daa79387d0d5e615a7ecc8005d2df400556205452c4b3. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:08:54Z), 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/QZTB32478328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e7ce0a28da1cc468401010e2248ff2ac7da8e7b38e8178da315127f3b07ddc. 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/QZTB32478329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993c29ca5944ef156ef0ec0032f8976ee44bfe67767c9edd83ba90b8bd451aaa. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:20:42Z), 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/QZTB52453391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79043725b8e852b3acba1b086dc2c9569ae5fa033f424da810ff67a37649503. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTB52453392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a65ddf1f951110431bbc93eafeaa5bda40ca9060b2f3dd70ac29da96a428ab. 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/QZTB52453393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67887bf9ce460b2d16839fadf05f1a9716a376749ddccebbf062db0f8e4144cf. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTB52453394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadd60c1b80b1bfee4d9b396d60e9dc197019ef2b050beb1c9d73ed0b5b73843. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTB52453395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a4587145a8924a84e69c18b54cab448b11e94ef5375f6d1cf97e0bb6f6b831. 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/QZTB52453396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912104a519a37dec4e49af74e8e94f127365b4b853bf4250fb86e3f742d99ebf. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:40:08Z), 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/QZTB32478330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81c217c2f65d05e6f82af3ba0662eeb6ee00ca0ee4a91baa957e64429640561. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:05:50Z), 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/QZTB52453397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd293a09185a36c171a0ff91bac8c928caaa859c184aef41b8cc98288aef27efd. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZTB52453399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3377202f85237d7da15ec0366db6851d2c947f888c970f31aa62bebcc7160905. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:20:24Z), 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/QZTB42413831.