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 0xcb0d1b1858677fdddcdaa270fba9ea3b22ec57f7e38c3db9916295897ecf2743. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff6889bb-4928-46f2-8228-93eb83d90f84.json and https://artists.proofprofile.net/proofs/artist/ff6889bb-4928-46f2-8228-93eb83d90f84.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 0xe84bd5c5cbe25c6482dd778c9fc14ed854bd83659ea01a53f7e0f24c88b15c7f. 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/GX5MY2283240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5125dea848d57ad5fa4e826010ff123ff1121f9b225263bf938e329db20472. 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/GX5MY2283347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc162e30a1dde3785e159760464b9085123068497e624319f6eb4357a3ea9ef2f. 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/GX5MY2283407.
Once More (LostVolts, H Lazer & Arvenius Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fdd3b9a44d72cef10008dbd598d8a71002d588efb7e02ebb191278bd86f80a7. 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/GX5MY2282851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3536576ecf787b4cb8caf29e2f0deca4f885d06f511b9cdb0f493de185b85703. 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/GX5MX2108391.
Uplifting Trance 2025 Vol. 1 (Mixed by Roan Gosling)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5ed3433f7f341ab7fa6c1b7fe0f240fd98de3d8a6cc9a19f87badbcb28d435. 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/NLHR22500258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3099bcc4b60aa02c806186cb30142346ed31046d48bb6f7d9d3ee15b717b694. 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/NLHR22500260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb764e58df81c99579515e2169be08c0bb8e1c1295f3daa3a46d5e04f943a05a9. 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/NLHR22500261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851e6cacd1edac92a3c948b7e1e5a0e23abf17c8b7fa7f324ec0030f8c573a8f. 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/BEIW12500216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8679378d1feb2309a07fdc0eaf89a56611639241d8b961ddb2688965f1fc40. 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/GX38U2209493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cd792953dda246f80c7fe2a2c7c4925177fa837841f98b6a8600c12ac38b34. 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/GX4R52292223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7cfae3904e5a9456c10bbfb26aacdc9ec7d4c68e6463945ff8beff5009eb03. 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/GX4R52292225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcf8a0c5049d7e53a5b2b2ec09b4762108bd75d5dd1b54f954e0d9a70703701. 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/GX4R52292228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c8f1f202caa7069f54621f60b4cf0f22a04bc9a25aeb0a817d1919e53c68a2. 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/GX4R52292230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb625a5571c95530de3cb14beef64a58285a700a5dedb4d7d88c3d3707fb1fda. 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/GX4R52292233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629f914c3d430e08d7b42a4fdfa071d6d92dee634aedb660138bf7f6cf609bb6. 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/GX4R52292237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbe4335b6c97a04f15a22097104a759ef2dfecd614e1caa7ef84bf9423e0491. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/GX4R52292238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81ddeb757cebcd95f5f1310f7a40a117a836e3fbf3158fa79c53a24d7795464. 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/GX4R52292246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4d451d0560a8cf12018e956d48d242a2e396a15f1257d69f0151e6851d6d2c. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:07:38Z), 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/GX4R52292269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca958f160fb2a45c1eb7becfccb0a6f020f2054fed602e5ab0c33d924f3470a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX4R52292273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fff407fdc3d3679133cb96ba98adbf03e6c2cb5b9f50d508264b499889cafe5. 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/GX4R52292274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98911da7e7304473e1b4c2cdf36ccf1e948e36e733c8b9f78d50ed19fb19fa10. 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/GX4R52292276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a9fb99261909cddd135fab80388dd3c1d220b187e66cfe527bc99fd0e75156. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/GX4R52292280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c1b15077f77c9a9725cca3a21c3362e8347772fb33698ffadb4e79da20db52. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:27:19Z), 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/GX4R52292284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e91cfa11f9ba80205581fc49c0ae1f7d874670c0a08867cc2d86aa06091079. 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/GX4R52292290.