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 0x3c4594a407194ca3275323d87bef460cf22361310adaacd77514e13a5016d716. 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/f7ed34e0-c66c-41b4-a1ec-a98f84dc0cb9.json and https://artists.proofprofile.net/proofs/artist/f7ed34e0-c66c-41b4-a1ec-a98f84dc0cb9.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 0xdb703f08030e2679f02b7d1685de9dc05b7dab0d8335bc7e50396b7cf9effd02. 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/TCAJO2515876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4247f5e82d92847726e41c291eaabbe8079c662586714d4ee7e93664eadeff94. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZGLS2507459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4150b202c8a4457e266a861abdb00b1e7cbe95f78fcab68b2deabacdb618f4af. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZGLS2551808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb031ee6c8b6b37417e9994b485cb4423c8f6fb7528a47c706c566970e48ee7. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:34:43Z), 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/QZW9L2412113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4acc06acbfeee88143081f5a156f44c86fe1e4ae3eb592fcf1d9f258365e4cb5. 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/QZW9L2412107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bad635babae848fce1ed9b5fb2f018c330b1a5fa2dd2fc3ba4a7a8461334b19. 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/QZGLS2567005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3acf4df51956fe2b32a44da4dab54f800e923721ff15b623bc611053a560fc46. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T23:02:39Z), 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/QZGLS2566494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1b1fb8415d3db9c9d323229bff3ad54e85161d1859191a7f09a6a86836dc56. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:55:57Z), 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/QZGLS2524689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421fa661f5a7a8bdbc722e68a3736459c9d920fbbf4b97fa4223d29f5e0c7d96. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZGLS2566467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e5ee90d23c64da7257980f436ab9588c6e949e610757908323340591a1dfb2. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZGLS2563443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf276fea107e45606f70fc73c88723bf61e35b8ed831499de401fd9c81cbbea40. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QZGLS2524684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a6da499825ea384f4921218a80dfe2eea5d66f2069ea29898acafe54d516fd. 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/QZGLS2566561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a396cd6f71e17e265d3ecb1ab7b4bbed25cbbd08c82249d75671c872400b9b5. 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/QZGLS2567599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c175873ae76ce346a665ac36224dbfb4f4510a92cad87fda9df0a0f74ad090. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZGLS2524894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a1f6538f20b3b689f8f50bf979fa03852d3522f0787145f92bd1575886e5f2. 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/QZGLS2566464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390d7d03c74dd00a9c135744a16ddcdd921c5eb27f3e8ee3313fba7e04e2c3d1. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZGLS2562735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d2d6066e779b2197d4b6abb9cf06007a31201223eaf2d95536d458189ba82b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZGLS2536702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841ac57bf5e04984991412f852c7d11b327f1d486dd44e3bc011bf72fafcc0b6. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:27:47Z), 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/QZGLS2563243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac3bca9b90353908a87901aa7536ec88a1d382d9516ecaa5fd2d19dfaf48b0c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZGLS2566458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ed9cb04a70705cb4998aaa8b8be864c30deefbab0dd50b402c0a7f513439b2. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:39:50Z), 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/QZGLS2567017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7499bcbb039f2a4f97df637462972517814563471ddd4abd6eb22c0ca6481db6. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZGLS2536774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781e062836763fb51035794544fd12c2f833f4e72c9d93e304c99afc52fe721b. 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/TCAJN2554828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78512d157897d55304c4ed35f0ade9d42c6a08d1d66a082321584a1c3c509bb6. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAJN2570269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21147b98cb1801e7f908bfd6b4f17b9eec5cd67d3935b0a5d240f2947788992e. 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/QT6622556124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6e8a03c5d6eff6fa008dba140c2257d1881aad86d68be4e3e1c393dbba0bae. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QT6622553593.