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 0xf6134acd35c639f244ec1565459687376c3e85cbc04faa5f0e672d2b4c0dafbd. 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/485dc5fc-865d-461b-906c-4cca874c202f.json and https://artists.proofprofile.net/proofs/artist/485dc5fc-865d-461b-906c-4cca874c202f.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 0xc87a137bf662e2e70e4d59cd8ae08748c9facbbce4d90d788fea23125b3d7eaf. 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/QZFYX2314808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a403e2ffcad5014a5d8144d01209c1e847171e49a0e1bfda4233b4589f9b7fc. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/QZFYX2419245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18241ed1af05e03849a1995f1d0636b9bc30bd0b78ee6f2f29aac56b3c3371de. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:45:45Z), 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/QZFYX2419251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23c4ce31ea65156efb2e9e824d1be44d0cd8745d2bcfd12d6a950a8b950b455. 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/QZFZ62348134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fec3e8e0958dea4a395556261551e1d1a43f1268579be0269c255fd8978011. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHN42329515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3646be9bcf701c03c54c4d3b06d5230c783149be224bba3810ba9983876721. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/QZMEN2349357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914cbc61f305169d6a6743c81d303c265dbf6abf56d72475dfbd1dd96b7e0a5f. 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/QZTAU2305519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc624e3df0bc955e669731ef3ca831bd5487b18651eb29489221e6754306b41bf. 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/QZWFE2342026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0897740cfd466298b877daeb6c5b1736a644f2e5e13fe475ffe6d41e47e2dc0. 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/QZJG52434454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d814097f97221503ce208f6fd73205739be9138a064e7596dd461eb0c1d77b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZJG52489063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47da53f2ef97d963d2541941be6f0df5b5cad774809e4b6c2a363ff20ccf73b. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/QZES52452731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd106dcf531d760900b373aae9745697f57fabc8f403fb0af2f3681e27fa33249. 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/QZK6Q2426405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cec5bb28f60df19ca53567781667701bcd627e28e43e60b46743fe1ff012a06. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/QZDA42509692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9226d6aabbc3f686fc1f48d80ad6fcaeed9070fa5fa758aea0f4e316de7926. 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/QZTAX2595105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eff893381cb99c9a2697a62182d8aea5c614971505d9ccec32ee7cba4b6ee4e. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZTBC2534088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f61479084b93fbe13fd64c7bf9d6a0a1bf9bdfec279c12f857c3f4c67d34f8. 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/QT65Z2549584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1c18610cf565448f77d1a8b0884c242ab66bfbec119fe9377ec83546005086. 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/QT65Z2549597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c6558388f0e778c8f2262dc88879407552e9950f65c10a7758f91c093785dd. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GX53U2697280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa80a4e26b5ccc175fc735f67b46cb8219cecf1f01ed18ec8b675c7a4a9dd42. 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/GX53U2697279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd307b3802800fa974f3f034fdbf85840227233a20361e68780128c59af6c69. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:47:45Z), 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/GX53U2697278.