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 0x42797e0b061aa60c285467a8786d457649db5ecfe3daf50bd8ca724523e315e4. 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/4c7d92f4-8be4-4746-9fb9-4f99e1d37d68.json and https://artists.proofprofile.net/proofs/artist/4c7d92f4-8be4-4746-9fb9-4f99e1d37d68.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 0x5743c2927968f4ca3ac1586ec989a7d8b7b7e2378fa3d9167b4536d93563d506. 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/USHM21985380.
Let the World Sing a New Song (Christmas Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb82e38ef3c7474414949471a23664bbf8a9bdce6ff9086805c90876f7afe676. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:41:07Z), 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/UKW3Z2201726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe817d860a7f8521fc60cea67b138b34a1aaea01181246f50812d34d26cc3d48e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/UKW3Z2201544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b00313d08d2d0c4b98522ddc93f9b3c09d63ce23ac5f7783ad2987d032af49f. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/UKW3Z2201840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a298584e1c3823f4e0d417f81bc83742e0d816c160045e7daa212cf641e59aa. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/UKW3Z2300684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce55e61607423e8306102c3b8a58b6e168ebb52d2feca78aa401a69daed6ab9. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/UKW3Z2300733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f65aed8c0f3940e4e1ae4690b0515254b0bb33f3a8a6a9e6820fe90f65a1d3. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/UKW3Z2400181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3849a1cba707512effb92a16e25ece8f618c73233888a2dc5346649a3652d2cf. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-20T12:10:22Z), 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/UKW3Z2400182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39662e703c71b3faa3e15441ebcd07dfa34a5d98bfef763750625c95bbaa75c8. 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/AUMEV2499119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc99b24a008d2bc609e12f14d2dfada1dce7146252cf105084d17e54e8e15671. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:58:05Z), 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/AUGBT2412709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1ad14dfcd2b80ef8d6569015eabcb561a859ee67bd33e776ee57f49f2acaa9. 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/AUGBT2423037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbc097c4e0a6a147bde8b7b92e95e5b3c224f47162050759e2e9e33ad1117e2. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/AUGBT2411607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f39cc537e1b57bdfe5d9be523cf17cd17a12add00102264c7e94660d9750420. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:10:41Z), 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/AUGBT2423050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583c0f609209bc6c27879d76280a96d6b78b7d2a16a5faa5f3b9b4205b99b1d2. 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/AUGBT2423061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6290e5d5beaba9ca4db1fb6f8b104144245e6b7f8523f4e7a82a6d70f306549a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/AUGBT2423063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183d635e05c26c2ac0377aa1632761471762dd49ae10d98ffcc84fac6b814777. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/AUGBT2423042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab60c2d7d3afd4c27506d9040c772406f90125666c1a37af4d2ad13fdf0e244. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/AUGBT2423070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9daa2bab41300fe9707190d076f2a17e4f39784a41631710de242a7c377dfc8. 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/AUGBT2423071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf741ebf8a553558436b2c80c7f324a557b229293d7b5c582c94cf6ae22e92b73. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/AUGBT2423076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7267b4d85e323c9c5f035e396f08007d0d94fed203e69815c9781ed78892dbea. 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/AUGBT2504223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7bd834251fd07644cc29c19474076b68b0d6bf953a9be702adcb4d696c2b7d. 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/AUGBT2504231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58269448b62b0164c3a81eef349c1c5acc9d8d135a0943ed2527c36801c9ad2b. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/AUGBT2504246.