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 0xc0455438d598faa84d86277c1741fcdf3c836ab4bc74b940dc505e702f4a52f3. 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/c5fbf781-51ac-40f4-b1af-f569bb77170d.json and https://artists.proofprofile.net/proofs/artist/c5fbf781-51ac-40f4-b1af-f569bb77170d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Les Tortures Volontaires (Nouvelle Edition)
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 0x2cd063e25300b64fe2892a5dbc1e98208eccd0983fe98902814dde633312719d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FR9W12032975.
Haunted (Ghost Edit) [feat. Fredrika Stahl]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6de6660a59dc049da4477b3227f0713710d6dd3bb5ade90c715ea50ee63e1e6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR9W12300749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb120b120aedc4b813b2775f2466b52f9cc155fdb52716924e639da02766a7a15. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR9W12318023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b395a9f43a924c7a044ed443654c613d831fbaf65870527bc0ce34c05f0a8b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W12300752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf0077b126dd556a0a836f857782f4ff176be427bfe94426bf216f09c41dad5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR9W12300753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966caee1698ab0d34683a8c9bce53b235bc6f984cd5ac84ee51beafeb6c1a039. 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/FR9W12318021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de259645b907efb7a254528bc932af878725b8cb1506d5572434247c6f15515. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W12300754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82fba64725cd823f0bf29d56accc3e6d978e44f85a454003e1d92de53fe17a3. 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/FR9W12318022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b841b122c4f1dd35bd3f09e6a95391af683d092952a0942b53d59c7ff25f7a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/FR9W12318020.
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 0x82c1668cd37e96d866c65bf3a30f1b6d057c7b719761b71f1a7f82521dfdf006. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FR9W12318017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c93dfa86af64383d1e535c0d441848a3831799dc97c6535c456c3eaa87a0a6. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FR9W12318018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1145b983c05a737c345431bc5672247b70d7d09f4cd9315836723cce0a81c1. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/FR9W12300743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ec6636d6760fcebb09b8c2799847431e967fd7696bbf43d3163c5641691f78. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FR9W12300751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100bf4be996172b4543db842ed02803e2e8cd0c14d0fed2e2d561b6f6822647f. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/FR9W12318019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284c7dea88f411e11afd927f10f2f7897c079c25f676c8b5f304543459085b04. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FR9W12318024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12d65e65fb80a6cade5a15ff3a5335f5ba3cbd830d6b7a6f5f1c02f3e4486a9. 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/FR9W12456274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f052f81e60138135d773ed52381e9aa0e2a5a02b6b9eef8ada476aa93a75300. 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/FR9W12456276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928ce341cfe070d63f64a65d393bb70ab3c90ce98b64ac8e6fae9107729cab6a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:49:56Z), 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/FR9W12456278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb68a19e4110d1bf753f19c45e1e83178e57a269f046c86411ea0067d2feada. 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/FR9W12456280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033367f9afd551b3a17c3e20d33536ac10a0523c77267726ddf35a206c5d47fa. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:39:53Z), 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/FR9W12456281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2237e0418f63caeb1b0ac4fabece408a76fe17979d6e2552037ea437cc6abb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR9W12456282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a939e855ec79bfb83224eb47194adf40cdaa84de4faf688d0940325abffda2. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR9W12456283.