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 0x0158184cf0e4fd144c05806d2bb90c1a317025b75324780d4f7476aeec9a7927. 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/c90d6d18-b88d-4e06-8fb3-d94f9d710647.json and https://artists.proofprofile.net/proofs/artist/c90d6d18-b88d-4e06-8fb3-d94f9d710647.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 0x9fdb923aba814575626d6f9a106c9696c741d6eeb880a0f8176eff2187bee824. 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/USVPR1601116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa74570da6dd8683176f03d842468b05bd97b2a8559addb91b1436a967c292b3. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GBFVW1800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15889a1590776c49f5266c72cf8e8db281bb5ca481278b57be8621ac4572292. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QMFME1924923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2edd06a0c8fcb0aa68165e157b170b7894fae13e9d000c6d712c9ea1adcd8d50. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USYBL2101201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ddd4d95804038b6ce3954315c930b48daac5f91057f34f5bd7804bbfdf6a99. 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/QM4TW2290702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc870c971778186db62729f804ab990f7aa028f3372946e6af7e1a06c2ff4182. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/QM4TW2290848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4422e579031a1122bb1fd29ddf093c13592ca1970e1a30865dba4ca7638535eb. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/QZMZ92387542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee41706048a383e369072ede8c0d8999119c5632fc0d5d4d78cfccf043d9a090. 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/TCAHA2385319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5715a0c1f0615883c02dffa08f08ddd7340c3c5f9d2e2311b26e02ca3c4d7415. 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/USMH92307692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839c493bfa9f4fad22f1f95f377463bb030a6137d9118a4f2b4abcf23c33bee4. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/USYBL2302206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08bd5cf90d2df9db6d92bf003aa9e5115e2f300f60f449b6b5ab6776142bac4. 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/QM4TW2456462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9067e9a446c6dd612a1d5b68fb187ffda5454b1a113051c5ac8f589bd974e3. 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/QM4TW2474252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e72d5399f8df9ea4ff4185710b47d5893c29c41b145d75f54ed64fa32d2c65e. 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/USYBL2401355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab8a53f450a7c71a77ec6c076a6839158c6476585861209e615668da7d73a05. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/US39N2403786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbcdd75acfca1d9b633fffecd446f6015e28e0053d9be762ba1df8d9ca1221b. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USYBL2500588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d44002f11b508dbfbbc687d65fbe376f64d759a79085ee2954adeb6a144520b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USYBL2501391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c35010d58f8f7d4d029bb101aa7be85c2d009900fa082b38cf17717be3f6ae3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USVPR1400477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19d16b1452e7051b306dbd65800896a658b1ad64dcf04c35dae76d609fde840. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZQ4X2300129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f2215a4bc1eced246734278446bc4c047042f6762c5ef5840580caac02a5e6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM4TW2476932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285261ffb0b4f00d9c3a5c5e79b5fc96468c0b2eaf0cc3b73d6dd203ca8dc824. 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/FR96X1980280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bdea99a2a407dfc71afb4fc593653c52bb0153f6d082a1edabf06426e62998. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/FR96X1876795.
Strictly The Best Vol. 52 & 53 - Special Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1a88f06c16cadead0e92ccbdd6e58b8fb7c2f3395101ca0a8c8e19f7aa1eca. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/USVPR1500456.
Collecting Dust (with Jah Lil) - J-Vibe Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8618ca8445600f9c4f4da69083ac38a4c1284a94ec94a4573851d938dc71d2a4. 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/GBRKQ2510582.