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 0xd5ac424ed1b950f35e8dc4c4196f1afa7956c15847ff94903db5966849b23f09. 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/1d015258-b634-466d-a444-a84f57134c27.json and https://artists.proofprofile.net/proofs/artist/1d015258-b634-466d-a444-a84f57134c27.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 0x8bb5dcadefb7951e531363d40583a8b954970f70ac29ff7dff4afaae0d5044de. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/TCACR1672903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43ec0ceb300f82114a72ac68d57313d0c9c95d5cf66accc43163f12f24b2e2d. 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/TCACR1672907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2d7a3edbad0c3f469dd2adac222a69dcc225f287dce33aab330a35c3e911ab. 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/TCACR1672915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848dc843c1b0f6fc53f9ee6224a1e6bef939ff41b75799aea5cbf232e9406345. 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/TCACR1672918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9940b81a69147a09d03eeb21613a089c344fb73404166190d6b3a8d1f7bf74d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:52:06Z), 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/TCAEW2099486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c313354645c8951ceb85bf11d6592f921ebe5eb7f25607246769b5b8b9905a. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TCAEW2099558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8141b00c4c745439d4692aa94063bcff3f6f1d36050ae615e68e68992f243f0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAEW2099562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579a249def930192ad1e5fb233ebcc7647c80e7fcafd8875b75d8a674b6e177c. 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/TCAEW2099571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72520d187db4830a949807944c6ca27e476ec9b4c9d2148cd05a7a5aeb0bf148. 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/TCAEW2099729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca1486ddb538ff561fa48771d4a5eb52d92fa8b00fa8f5a2a39c50949d43360. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/CA5KR2096314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbaffe5836fc83787277d75e24a4fd2d91ab5576afce77361cf51b9ff5c91c8f. 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/CA5KR2096308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88eb197de95d752428c4cdcc3491d408f3313d73ef848c5ca86c8455d48fe4f1. Chain 2 (Bitcoin): anchored in block 957544 (2026-07-11T09:08:48Z), 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/CA5KR2096304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ba2b517ebe8e0b5c4d9080e192d57210d347223eabaf5c8b1bc89753814de3. 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/CA5KR2096313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8c334f94a483a048dfb5735ffad699d70a8360517176bb418021d1f307a5ce. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:05:42Z), 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/CA5KR2096306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ea72bc75f980e56cf323a9993431d8d46146cf85a76628d242796382444238. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/CA5KR2096309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96e2042e7a9c327a8df3682b710ebfdf5d4a8939863df32643b9976301d3305. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:51:54Z), 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/QM4TW2128762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73728e530307ea62bb5319a997dc59b878aec01458df5f0aac7959c0a758dbff. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM4TW2128763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512b52a06877052c2f352d8985cb3620f332fd297e6951c5c902e172236026a4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM4TW2128765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7951a0e81cd8f5ad93a85fe14bce22e52b4afd48a1a7e4ead1359d8e44bde535. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM4TW2128768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca9becd4d3907f03c1d9ca344d2cfb3f4684eadc39b5f9bb6cefd018ccad267. 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/QM4TW2128769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969751803ad501bcd24d14352c281d2531b7823faeaadb7e1441b97289d103a4. 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/USANG2432951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9d18ffe7d79c505df830f0b3a6ba34c07f36f16bfb37f87e86fecb05ae20b9. 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/USANG2432954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca89aaacd60bbe8984e5f00e79431345346c181f6ce243556ab7336f0ee9f060. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/USANG2432958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f7c2ad51310b9357e6e42b6e3e542c1bd33b155db5ed87ebd6063651000583. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USANG2432960.