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 0xd24cbdc5e09702d009db588f7faa0d7531f197dcb7e92e6a068ef70dc6b0d168. 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/29d7c855-97f0-424e-b36a-72b58cf3153d.json and https://artists.proofprofile.net/proofs/artist/29d7c855-97f0-424e-b36a-72b58cf3153d.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 0x397922f2a1cf982dc6f21a883cfe2d6856207efefeeba1d80095efe936cdb89e. 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/QZWFN2485343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ebeaddcca3c79cc45ab1f8f07f8fb79ace1a6f8f3eeb8d7b4c6bce0b3c1272. 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/QZWFJ2462585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4399c4063c26ed0e5b76fa33b523a34a24ca5dc55a5038c514a49cf1f20b9d. 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/QZWFF2483938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7406bf532d712f0b74da8372bdee01b52ad6b3dd20df207697a52de3da85dc8e. 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/QZTBE2458364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939fc4817b976248ff9d62d4cae17ece41318bb08f8dea29843ede76b2d1e75e. 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/QZTBC2414604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818973056d69e05d9649bed95cf66f0b65e614a444283aaa8e770c52a2ff79bd. 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/QZTB72454430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca9cda7f8f60c09e34ac544b427e80af8c5724cccc331ccc8fedac5700c9f92. 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/QZTAZ2456686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b186e78e017333d84149a13d40c77fb0e319002bfac0e3cdb2845fa8151a94. 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/QZTAT2454991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56d6665ec936b5eeedca5fe3c03acbf648c33d8889a749f818169117f9270f4. 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/QZNWV2429726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e9083c3c9c0002d0d3603bf9bc9104f65209fb1da0a6431cfb3601f7d2e7bc. 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/QZFZ72478333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c50f3b25793893bcb2a1f6464438a91fbc409de3288eac68b763f417cf50344. 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/QZWFL2394368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05648608b3d89559d5b87e72eac716a2becd13ba5435ea2addf0df089a80ee87. 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/QZTBE2339438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fc1a21fa4defc1fdec80f7666af71156d2b3bd2481e16f1f1b6aeec9038237. 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/QZNWV2319900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2f4b7eb098ba6e36b748d418677565274eda7912df0f79fdf7fd509aba4766. 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/QZMEN2360053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703ea47712f22a3096604cae6b0da226f5b72e21bf01a46bf40760ba4cf665bc. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZES62345301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0e5ec44389358e6bc7226c05c889ed63f8572274222871946414aeb6389a0c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZS652356257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22740f3ff0be034bd85a10cf5e99e4265b9e7704c783861b058fe96b5007f63f. 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/QZTB62267181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc185c04c41336ffe55c880152ca8df4ced49baa93070384e1e98feb7dbac2ddd. 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/QZRP52267596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb117066b3959ca1b2158b760fad120bbec570b8adb679a9d6a1896ade3a1dd0b. 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/QZMEM2286077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec81c36c9098e7a48a9530360a8c44c3e8868efa298e5e6d4269e440d613289. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZK6L2276104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489d9d8162f8bf4b194681f34e5538513ba36cdf1c7371c958aa923798a66d8c. 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/QZHN32285993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb1ce6be89ba42b49eb779b44b915c9add5225bab3c2d910ae313d9dbb990b4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZES62240718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd05fee7f3ff4a9f5fdccbd199e6d4a434a1b167f343a5448a2eda70a1ae4fbd. 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/QZDA72200249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc389e8a0a63bd17082fdf76fa5153d7cf5911797d4cf37833ff1778d525dcacd. 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/QZFYX2273286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0133b8bab56bed59a18d9895399fff34440011d3e36599cf47e302b37ed0e2f. 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/FRX201813660.