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 0x520596b87b243187958f6c236f93ef2f926ad3e0eeb3254fccd56f8a990f41b3. 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/3d682d6f-a16a-4cdb-be6a-b689b05d180d.json and https://artists.proofprofile.net/proofs/artist/3d682d6f-a16a-4cdb-be6a-b689b05d180d.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 0xd5703a40b34bfb7dc33182913bd64b84cbbc82c694d7aa1c870d8d92f82451d7. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NLY9D1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefef3bca5d5b967c81321ecbcc96565c1be7ed7cb2302c7ca5a8acb0deb1785f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:03:01Z), 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/NLY9D1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dbb040bbd567a3d1728f2e0a821f2a0ed09f1b155e504249d145f5930fab061. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/NLY9D1900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012c5ce0aabda60a60ecfdc37fd2a48594b317c33c51469ba61a2d756bf9e53f. 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/NLY9D2000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57b81dc5d808c0b8e326486bdb2f6391afd7f38a6ec6acca1df88ddc917bcb9. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NLY9D2000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d02571a64a3c1771e631653f551307ccee16a89972ab6e69ec1a32b567d62f. 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/NLY9D2000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf605d9f77ddf742c7ed923379c44525b3546effe77b9ada72ab4d043fc4e35a. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/NLY9D2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ac3289afeebb4a9864a679920bb011da6ff5dd9e0293132a809ce8a728b847. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/NLY9D2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fe298175a92cb6a9de9a971f9c13c5892b7c868b62263848f0d0cc265258f0. 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/NLY9D2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf3dd48de83d8f2a3265d04b334372d087ab6d0d29069211951a64cd404c132. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/NLY9D2100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd6f6018828bb01f6ad9377a9851a1ab342ee8b1b068782b453ce257f87efa1. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/NLY9D2100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ac3289afeebb4a9864a679920bb011da6ff5dd9e0293132a809ce8a728b847. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/NLY9D2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4d1ba01140e912aa2cbbdfa80ced7f5e439d2aefd6dcd24d81b609e895d802. 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/NLY9D2100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d02571a64a3c1771e631653f551307ccee16a89972ab6e69ec1a32b567d62f. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/NLY9D2000027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fe298175a92cb6a9de9a971f9c13c5892b7c868b62263848f0d0cc265258f0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLY9D2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81be5d5c689628022c883acead9d26d9d91869eabc095c70a0c1542193e9bc8c. 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/NLY9D2100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f93a197aebc3ca0346e9ad522d35928f60cea5b0667c0f0193a0c93ff5789fc. 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/NLY9D2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d20e9be8c6fe291a5ad595bf1fb9f60e5bfe1f3d31b470e9e9505a492ebb43. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/NLY9D2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec076b2075aa1291f3b4017fd4f1affc300d9f290a7b1dcdc576a2873102627. 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/NLY9D2000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff5de38e4ad2d3177214985c045f168a582da39915c087855a931218d779729. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NLY9D2000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b18a3099916ab9fc64dc1e842c09eb56cecf54c2c551a12497b25971646a962. 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/NLY9D2000010.
Bouge ton derriere (feat. LouiVos & WAWA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555a9544887a34c53ccaec51219dd541915c26fd365e98473917f65088cefdfb. 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/NLY9D1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e90077c91c5fe59d715cedfeac7721f52fb8f23228f3222ffebbe4e20d39cfb. 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/NLY9D1900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ff5de38e4ad2d3177214985c045f168a582da39915c087855a931218d779729. 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/NLY9D2000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec076b2075aa1291f3b4017fd4f1affc300d9f290a7b1dcdc576a2873102627. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NLY9D2000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbaf2579f059236b43a7474a40a4490f17cb7de14b901c9c2feded2704e088ef. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/FRZ082100218.
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