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 0xf84fb16edbc6d9f972edb0889a4686b991f149e509db3623bf2b0ca3a43e4284. 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/851dd87c-4819-41a2-b740-7fd11a6f4c26.json and https://artists.proofprofile.net/proofs/artist/851dd87c-4819-41a2-b740-7fd11a6f4c26.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 0x747f41b94c587d77e6a9eb63f1e3a6b7ed1bbc58279ad26200490e6e8a225191. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/DECY90600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e64832d1686db8407c5fa8c3369d76106d791c39c9742e9b2d5ef29e9467fe. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/DECY90600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54214c51c36954141e269d4caf44e702cc18ee9dc0aeb0da108aa8e33c4a99c. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/DECY90600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2b3986d119af40aec1b0a466fac2812deb824a74a9a26d16c5a9a7f86dd62e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/DECY90600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10aa975fbab7d2f902092feec5ab5c5b9159d04824c75f460f103a277131918b. 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/DEZ650813982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60eee3f57659907a5a95678fd3d040faebc496f6a7171925ccaa3c9f1ba9b882. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/DEZ650813983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9743af6a7fed5baf028d8e58038f2a3f38e84dc1b489d39a7440a3edcd8b1968. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEZ650813996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c5352ca351ca3416f1937ac153fe9d13b083511469439567169c7f17dbe06c. 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/DEZ650813986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b0004140acd0bad02aaeb6b9110c0b35d512e907dd438985ae20339f86392b. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DEZ650813980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a03c857920d4fee257dbe793fda7737211c0733e333975504a1ddfd2699fe73. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-15T21:33:28Z), 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/DEZ650813989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833cac48b9bfbd37f8278cd3b4426263e0559fb0223286cb3e02964f883cf79a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEZ650813985.
Holler / I'm Talkin to You Baby (Live SWR 1 Headphones Concert)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125092f290cdac67e9cc1ef6790b9d2813e6f6b59b159dd5bbc655122a4560dd. 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/DECY90600166.
Tripping out (Live SWR 1 Headphones Concert)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51641b6dc5be23de35b35b481e95087918ec2364840fd534fe6bfbc43b8176ed. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/DECY90600167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342e3b737b08958a3799f0f8410cb2eaa03ede9c6e0cf6110c6be2bc1c773083. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DECY91100241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabed2ab2d512700eec4d53a52d41f1a5ae2a2386b078dbe419347149a5026c8a. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/DECY91100237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e70899aa4f2a87eb3600b98a2815e3675bf303db81a8540cdb74be47c96a3d. 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/DECY91100239.
The Girl Who Got Away (Back in the Days)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b847c258109bc60b804cb1ba2b3ec70464f06bac0ac17051b041df45c2562a3. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DECY91100240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551f6c12b6acf51b9e7aecd0b8ddb82cbcac5f9718901c6c166ad843497fd981. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/DECY91100242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d965eaf19f958aeec9277b9af49884db83103f35621af579122a93b902521a9. 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/DECY91100246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6387b3cb3e43705f79fe38926285385b4202e2d9e1997bf4a5c5ee19fc78c062. 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/DECY91700637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0291928ad5f5587794d1f2a8a30a0ad7f59973ff6b3c9b3b24ee65c30e10e11c. 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/DECY91700638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd641c2f461656a4b2a489cf988a88d08080bdae5c89317810855c75e3bcb5bfe. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DECY91700644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a762e89a74b587709ef774757b1f0ddaeed8cbd568311e21ab352dceeccd7eb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DECY91900726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111e65225a4c280c32f375a0e7f8a067f0ebf4196f417437236f07ed95e35fb1. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/DECY91900727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ef9a50a97949343f956afc389969fd295c2ba34785517177d88fadb99a3949. 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/ITH981100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63097d25e1de02b968cb61b79c5047a07477bc7de5ff877b1d5524896478fe00. 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/DES290500050.