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 0xf7c4133470eb8213fd2533927a52cffe6897bdc06c785667bbc6c78409ba79a7. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2e23a7e8-7e51-45d6-a677-0fe58f3f2ad7.json and https://artists.proofprofile.net/proofs/artist/2e23a7e8-7e51-45d6-a677-0fe58f3f2ad7.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 0xe79deb403eb6d16d7ea6023fac7c098a773a1bfba0371e7b495f2a7d3a9ebc8b. 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/CA5KR2383859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efa71d4415984c0add0c757bb63e2770354605dc59d28f658c734d5ff85bc21. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:56:09Z), 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/QZNWY2425443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeca9cf5d38306dfe340fc1f8f32aa83dc089b7657aac8506e2ee62fc930e7a4. 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/QZNWY2425449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a03f8e08f171caff59a76631d805b87858c2bee84a3db5a6c27035c786a8bc. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZNWY2425451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa226a9cd0ad75265dd50d45fb1d6544292cd6b308e17b97d2c1b3d4151e9d520. 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/GB7YL1896101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5467dd65e2699d5cd2c882f208cfd07e11a724ac0027d2165fdf0e0f52a86f4. 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/GB7YL1896102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dec6eadf80252f94f65a97a37fceedd830aee8f18f384fcca01391436848dd2. 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/GB7YL1896103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d1df1fa24f2de2db1f58d5b565d05fd619e6674feaf45f4f56a1b5ab81c6b0. 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/GB7YL1896104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d85213f8828b987ff8b592d001cd4ab7db2c05db5d48d75b23c2b62d7e54dd. 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/GB7YL1896105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a55bd5f39ed8d96fd627ef5b913e82d2e3ab660ef1d19e8d7a7dd90ed19c01. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GB7YL1896107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a1cb3d1fdfb9047abb181fc30a6cb307b5c6ad22fce9cf777f54a36319dde1. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:07:44Z), 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/GB7YL1896108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b08bd729ba623099b6960e9aa6516ed42ca9f87910528b8b83c86b3578fb784. 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/GB7YL1896110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1378693d968a8cd34b9ca0e799d82f214b5782828f4827c84607a10cab7b987e. 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/GB7YL1896111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88ef98b16df12c9fc3c881dea72df77a3b7622b25c82225a9a62eec0d475f9e. 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/USLZJ1779867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec2f4b2357432ba9ac3d89c05d8174f7493ff82ce80d17383c68b30d40f4a26. 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/USLZJ1779883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073f7a6f97e67f2fa914c087dab2935da4d5d1b044f6f3e9d6565c3904d18d27. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USLZJ1779885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126df85f74a0f844e5b3926114ed26b2745c0330c2bd9af645a56d745bd52c94. 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/USLZJ1779886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6cb24ca835940b82b2bbeb68b506a9344a06dad74cc7fd516cbfbdc74530e5. 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/USLZJ1779899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf160a45db89769378ac39d190250401ccc9518a31c0e396c27d3945f13aa7c7c. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USLZJ1779900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8295375a70cb4547f3d1a6f0323d4f322572650efa2d75097e6de03e38d39a. 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/USLZJ1779907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bec600a417f987aea3cb7699eb125cac1cdf311e36cbdaa72aca050546a4f2. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:01:18Z), 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/USLZJ1779908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0da5c298c2156d8c5de6aeba3246af1af0f1ef515c881303cfbe27ccd80145. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T17:16:41Z), 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/USLZJ1779915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5bdef4b07ce56b20fc95bc8d9ca33fda5d72213a16a2df7f47f928ff02f5906. 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/USLZJ1779917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44fd5a15b5f223fd2e256091ef1777f8b6fbe4c10452495405c42bb1dbbf9135. 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/USLZJ1779920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb19fc4fd96e008c9597fae9bd3470b1b933f30dd8ff31696f01e060042f5bb. 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/USLZJ1779923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be6b0fd0fa4ad81b6bcae00df37993ef5cd5320dfc4789a43f77ab403d8545b. 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/QZS1Z1641815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef196b2c911084e195b361a09c916a0e8182e14c7a0faa7a273a8906258ee3d. 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/QZS1Z1641820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf300ad24e299b50317d82388d35c4b7d762a5b64e7685ed34596085faaa0dc28. 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/GB8KE1557925.
Ragnarok - Sudden Death & Digitist Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95cc85800ab171fff83f6571f080f324004bb1bdca9223143f412963184e2661. 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/GB8KE1557932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2518766c0e93691282749a5cd1c666493ed5626835ca7a5878f1ed26f166484e. 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/GB8KE1557941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a73f67d53d4cc503b3cce24c9dee9549ed93ac988b7e3581d8fa41407f503c3. 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/QZS1Z1628281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c90fda7ccfe049360e3d58272f9dbce588faf546fe762d1f75793d3c853577. 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/QZS1Z1628289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fe9f3f48a1860f4e1eaad36ed2e89b06b27306cc7adae610d660c00b2c5921. 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/CA5KR2011182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e270dac89c131b4963aca945b84a69d5ccabcea5dcc63e764aa2c33175c690d. 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/CA5KR2011181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455402c47d8a91cde09e03ab29cae924da82a648b92916d938f1d1b6f9575815. 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/QZ5FN1893050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc5cdc5590d84fffb70c4ab06c581d7864a3498f19cc6313346fabd33aeada8. 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/GBUM91800145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416c3ff84fb8863ea7e9513d41632dd07b35242b144f99c2d0d062a5d64c9409. 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/QZ5FN1770811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4a469b5964bfbc4451f08db40a9e9c7953d1dc3a28158b2d466ddcc15e05de. 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/QZ5FN1770828.