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 0x2056f71905b67c431c07f3ce3079278ba73dc737c2adbda4dc1d76cb98c897b6. 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/296c4303-f9d1-4396-a2f8-05d0e15d55a1.json and https://artists.proofprofile.net/proofs/artist/296c4303-f9d1-4396-a2f8-05d0e15d55a1.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 0xc245fa96366c27011a015d4ee61ab940698bfc75ef2ab1ca8eb9084724b92dbd. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/TCAEH1989790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd982ae33d39947dc5f0b0f25890b6973893cc4550cb8d57feccbf85bc5757169. 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/NLK2U1900322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe978008cc5e06332445f4cfe6a05cc54643cdefa06b1fdef345d10ce97addbc. 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/NLK2U2000325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd982ae33d39947dc5f0b0f25890b6973893cc4550cb8d57feccbf85bc5757169. 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/NLK2U1900322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e7d84d1be2c540a4ab17ff5c3148722a638c880d2657053477423266dfda41. 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/NLK2U2000328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc245fa96366c27011a015d4ee61ab940698bfc75ef2ab1ca8eb9084724b92dbd. 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/TCAEH1989790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29043186c4fa5e2d6410283595d792437e662ac0bcb8066167480291965c03b1. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/TCAFF2087471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29043186c4fa5e2d6410283595d792437e662ac0bcb8066167480291965c03b1. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCAFF2087471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66e574b300ad5c33d000feec9ba7594c81cb6fe8471b65f6ec4aa9afb59480b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAFO2134865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd168ba420d46858fdb011b8cbece34d8bd65e7834608a5c39e0bdc00e76bc8e6. 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/TCAFW2170979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b368e1573dc8ded0df69ca1b7db0bbf0c76b7caf6eb10331a343b8329658854. 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/NLB8R1900116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037562a382ba9b83830a2dfbe33e50b81702dfa7a97a273b2d6c25f143555c27. 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/NLB8R1900108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037562a382ba9b83830a2dfbe33e50b81702dfa7a97a273b2d6c25f143555c27. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/NLB8R1900108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d27cbfd8a7ae1e88faec442097147612fc0eb9a7c72298a37ebdfee2e638b7. 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/TCAGH2285840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d27cbfd8a7ae1e88faec442097147612fc0eb9a7c72298a37ebdfee2e638b7. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAGH2285840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81078008b4be56853b93a28faa2615eff2a4476d2ab0267d430bc360a36f2c22. 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/DEUD92356279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66d22043c2fbfd9fd9bbe7fdf4469eee550a322150d472ce53af8a7d792b301. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZMEN2386086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39cc81a1277b6a017987147fbb1745e25800dc9a2b93abd40b63b20a4e41eae. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCAHG2374069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd063ddc61e542c2418882e5afa6bf6df759b6f1deb12fcfeea732fabdc5de0. 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/QMFME2376494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7efbda65a16a3272432524303eaeff6f540162ec8da86ff2e444734f87c6d11. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZWFJ2350622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ce41c9cae48910951772116047a1bf1252a0f60cab4fa5aef7f102c9b40296. 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/CH7812410697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17358bfb9e1cbeaaf1ffde997a4143c807ca7ea6269cdbd2809e13f32f1296aa. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTRX2566077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ead94bfa4cfd8f070385baa63ad0b02e5bfb3c03e57bf82701e8ab3d704023f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:17:59Z), 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/QZWDD2531039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17358bfb9e1cbeaaf1ffde997a4143c807ca7ea6269cdbd2809e13f32f1296aa. 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/QZTRX2566077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ef66909dbac6699ca727385cdc98e58a5f11a189b9ea110a901c310d5e54a2. 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/NLRD52024514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e028e772d752cfbdddc3eb5faf46f82ac05b37b5a187cadf054ffe6d6c4a36. 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/NLAM42200186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb893b3597a7864ff1142571cd51365763b35a9c1a6548b587be50634bc12618c. 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/TCAGW2353010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa25f6287041a50c2e971db02237ac163d084bf91eb2c70c714b38337c6e3b68. 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/QMDA72127643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2c0ea3e0e4aaa8004c54e535b9293f4e50b1945f3fd42f2f87afaf803f2d1c. 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/QMFMF2024881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412af95e903d812d5b1da16ba7e2c0c81fbf2a905c217a7d9a70c10a959d9af0. 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/NLB8R1900110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7c965de04487963c9466765cf9ebf29b25a790916d194dd60fddd15c54ef95. 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/QMDA72139461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d3bfc53ea6a5aa09f271f722bc1ab39e6f2565627dd4e08a028b98d060b3ba. 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/TCAHG2385023.