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 0x33e7548eb3ff8fd3d2b80c5d548a4b4b9fbab920784492dbdbba1fee96086163. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b20ef077-ea7f-4c03-b847-7e729a257e0e.json and https://artists.proofprofile.net/proofs/artist/b20ef077-ea7f-4c03-b847-7e729a257e0e.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 0xec1e68ea2fa607c7a9c251dd578cbed26ae30b91389245e5d60093bd53573171. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:43:21Z), 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/QZPEW2208766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944a4aab5bae97b240a5355ab161a1a80f11e583d4bb27d80d1fee11ccdb0652. 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/QZN882208817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd827f52d77203ad722223c296784fcb476c226022df3d0847c08b4ab18fa4f. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QM6MZ2270388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85d9fc91bca3aa72d806720d910e594ef9c7ebeb973be35bb4077e3c2d96e72. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QM6N22286796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fa0ed4e3f8780e246f63308183d19ecf3c3b286cbf4a84b2e0f7b654348381. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QMDA62275519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7706f1ab77a377b3487c17c5381a95599450647743a5b153b32d6de259daf3b4. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:04:34Z), 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/QM4TW2364599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99d6652f6ca3bd698d82ee464b8a39d190b9ea7ce48aa82492bf09465db3b57. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:34:51Z), 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/UKZGC2203805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4ce4fe87989f44d4f6584acfa66061a595211d0b1f42ab47b03a9eb7b959f3. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:56:03Z), 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/UKZGC2204155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffe1abbea50d903f2440f70073d64be6292e7e1668c01a00d48ddd4ffebd4bc. 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/GX8LE2351694.
mockingbird - lofi (feat. its' okay & Darks1de)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f79b320394354c88d28ae10347c5342cb6434bbf8f8f1d5eeaacb97b6adb19. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/UKZGC2304028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa475f5fbf61dc8786ce0041eab2dcd4107763c9b0209fbefe7f9fd1a7404c2. 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/UKZGC2203556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790a515e9a4eb14ab16bcd6a8fe5088ac39d714531755dc1f34baabb71a8f72e. 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/UKZGC2305786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7cfd2c847373a2a90a1b202483da5261b8dd377088b68ca21d4f8447656f86. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UKZGC2310016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad475c5081d2b4ffa8d5d74985ee445c80cd87f063cf1b5e26c6c8b23238d57. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:17:25Z), 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/UKZGC2409394.