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 0x5e1de3f8405a9d3c3b6d4ce98a249a33b22c82d42609697403431fd6eb15dfdd. 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/73df4726-4646-4283-a6fd-3720e25e4064.json and https://artists.proofprofile.net/proofs/artist/73df4726-4646-4283-a6fd-3720e25e4064.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 0x7d03ec9e5b094a415ef85f4270e2b9723a8fb0f560740037cb46b371193e83a3. 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/FR9W11307477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3644db845bac02b04cf324365bcafbf011b251d85b0b11d225fe6740d2d6c9aa. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FR9W11307476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c66d81a4472680fc32d983e846f26cae83b43657dddc33c74c0743d6eb877e. 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/FR9W11506942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f89a32961dd90784b96fa446bfcc49367f10221b89b9b1b0bdd32f986c510b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR9W11506948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd730a6b93e815e3a568bb12d47a173dab0d21360fb25671729d7ba16ee72ecc2. 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/FR9W11506949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9ffb4765b124bbd2f9b837fea0d5a28dbbe5c85c2c117d9354c0101c86b972. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/FR9W11904556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a1a2887861e271daba0587ae9f66fc1c157bd06e7dbc4e0ee01c7a6cee1e84. 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/FR9W11904558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11332dd7406c28f2031ae5e264ae26217c2b0fe35753013aa0d69dd350cacd1d. 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/FR9W11904564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe0ddc9e5a1cc0fcfff4671f856cbdcf8dcd8b23c7fa2baf24feb572a9f7ff1. 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/FR9W11904565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3919c0b062dbb0788eed718c36d4be7c59350151a6bd585072a7ff19fb4e0342. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/FR9W11904567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5c8a8bf8db15e3ff6f4179b6c287450f601d353e192e32f39d990daf336899. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:35:24Z), 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/FR9W11904568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0fd2c2e0f768aa6bf9d7b59700ac8dcba379ba285f83e6bce8113155c882a5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR9W11920543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02845ad97d688acaff48d51cbf9dea08827e81802af859667a9a8f83a6f0194b. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/FR9W11920542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7533808bcf0ff69be966766ab3c9d66700283ca7f8e88f82a111c164434b3e29. 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/UKW3Z2100908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867f5f7c08618942ceb8a59a6e809993fcbb34fd76d13a934cea2c8fee7bd08d. 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/UKW3Z2200546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b31fc6ac7c4dd71756c3bfc5e6b91356f51cf258b88afdf56f6a11c25c0aa5. 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/UKW3Z2200548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f06c8dc296f0161a5ea6b1888b3f1fe2bcd5c00f8ed667b9e014aa20dc3f2d. 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/UKW3Z2200547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344d0193cb8bc2d8583b46ca59944e240d7d64c23bea98f96af044ac7796a260. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/UKW3Z2201938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5205979dd7c6799a567bf40b762449cad2de9fed5cf2c17b99bd40ce4a15ac. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/UKW3Z2301771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996690a0489ed610f8b10a675aea2af6161e2b52c3bf4ae759d528cc5489dc8b. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:10:12Z), 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/UKW3Z2303595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0bef82da78e1240f736bda38dee5457fad328672bbdd276da1198945f40e58. 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/UKW3Z2402727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0652343763135e72973cd1482a38133104bf1eedabcd8cef5690e6f02ce91ee9. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:44:47Z), 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/UKW3Z2200544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a8948a9af7871e9e7e0ca59fe88ec3cb58fb265e341118b8a71bbfe07b62ea. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:01:40Z), 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/UKW3Z2201932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5dcb679a52f189d0870652e92fdc1c35c35c03c43a4aa7f73c890ed3f5e9c69. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:21:38Z), 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/UKW3Z2402723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0bef82da78e1240f736bda38dee5457fad328672bbdd276da1198945f40e58. 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/UKW3Z2402727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36865e720e82f3559faf4cc960d4bdc6f91f4ecc693cec64d871edf6fcdbb830. 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/UKW3Z2402728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429d21bb14ff5a10d2fc0bd0db43f4ae1d582affd7fcfc4405c859832094fc90. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:20:35Z), 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/UKW3Z2402163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40306aefcda60d4a280f3bb19ea3e84464ad23def38ab8cee435f50bdc97af2. 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/UKW3Z2501154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd26b2c16b33aeca24f8c8244b67c70f4bcac9af00849e0cf88c6e4a84678788. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/UKW3Z2501156.