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 0x2cad7b457833eb7dc2f06a62ffa5f35bf988b1c1f6cd7bb4f13b4a9ec253392b. 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/dc78bc83-0ffd-4e82-980d-8f595e20606f.json and https://artists.proofprofile.net/proofs/artist/dc78bc83-0ffd-4e82-980d-8f595e20606f.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 0xc6932cf4f95054833ee42fdbd00c059d97e077ff889d3805df7857409fd658bb. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/DEKF22100303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2416557e45374af59dc1b0474aa9cfa54ee7ce973ea7a18c9be2b994f275fa. 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/DEKF22100410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5716e53425e01c0e36d0db45152165085cb8fa34ca7c86fd3d5e66e82b3fc2. 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/DEKF22100558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35fab0c79ed9236387c3a90d1a905031716264ef80bf24e5b4e1d944366eb37. 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/DEKF22100891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509f528cef3583cdebaae5581e4d8d07277ec29191df68045a4f57bbbc1764ca. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/DEKF22101072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35fab0c79ed9236387c3a90d1a905031716264ef80bf24e5b4e1d944366eb37. 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/DEKF22100891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0621cb792e08e11dbe2dc5852b62a5e31fd1e83d9e824e266c0226d1a4932afe. 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/DEKF22101073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0480e1e854da415a91ab04e3dab2fbb2b6e5915d5d616bae851103f5b79f2a8. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/DEKF22101144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5716e53425e01c0e36d0db45152165085cb8fa34ca7c86fd3d5e66e82b3fc2. 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/DEKF22100558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e538965b8010d7cc1b2ae7c9aa4b923396888b847d95f0b70de694814fb3d7. 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/DEKF22101146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce14430acece07fe477c8fc8d9ad5a11a8952d275aadac92ec71125aad337d97. 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/DEKF22200254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db5e92dabe854bb390d6bcb20931bfac2974bf88e887645bb49bc4417e06935. 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/DEKF22200926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827f71b8c8511f0faec87a013783432b42e56c00f24a0c5ca3ba9afef4570358. 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/DEKF22300342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12c9e112a56fc9fdc9fb509b5dfb5701da7247da5105f3a07782bb191067031. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/DEKF22300360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120d9e4345da455956149cd49a2a317622cb15dd8a5a1edc8577f6de59046db2. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEKF22200858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51919c00c8d467949cb7bd1f8690767d1a29690865233946ce4dccf037875aa. 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/DEKF22300351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866007045b81526763951f759a873167a3f92e86d88fc04f0765336581ddbe69. 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/DEKF22300352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db5e92dabe854bb390d6bcb20931bfac2974bf88e887645bb49bc4417e06935. 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/DEKF22200926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52206bd18ed8651f1b33f2d7463362b0d69dadd091440b4d811ca36c16a706af. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEKF22300353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c78acfda56ed9fe078eb54eaa10a1b70078f4635ab771c42004868c09873b3. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/DEKF22300355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e788c8a1e9889dd36587f717e4a1d8b01b5fa938f743a9402aead0ff4c0acd9. 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/DEKF22300356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906571e8edfb3833e3963c51fab78f26ec05bd74b5f2a1c8843342b44b8d4722. 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/DEKF22300357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827f71b8c8511f0faec87a013783432b42e56c00f24a0c5ca3ba9afef4570358. 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/DEKF22300342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19466772c8965779623775ef89130f0035166f9a4e9dfab94ea8a41e8c70bfbb. 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/DEKF22300359.