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 0x1b20d650468376c94c07c0e11c412e2b46574327dabe212308c4d973a04eb4cd. 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/b8bf0cc6-8ee8-457a-a879-46dafe5837a5.json and https://artists.proofprofile.net/proofs/artist/b8bf0cc6-8ee8-457a-a879-46dafe5837a5.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 0x6b02ef49ec02dc811f3398009ed2c79b07cfad3f99d940d340a24fd218cd416c. 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/QZK6F2188178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3069daebca01b9b780a3b996ac810900582588e7151334101cbfb27d4ab114. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:03:42Z), 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/QZDA42264473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de104579a0a10734a97080aa1e7914a1c9ef4f172aaea8e8d8cee06878e7e66. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZDA42264475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52b0634c563cc23e2ea79cb8b4a3d769c21734674cb657d24c53769664eaff3. 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/QZNWW2245339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1897c5b696eff76777fd64d1c038784e2d91f805ef80a7bfdc87aa6d5d12abb. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:29:52Z), 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/QZPLR2269504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ec31ff9ca7dc7f8a5d1c899d7cc2f3bb1698a97b48edb0b3591b720b4b690c. 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/QZHN72308094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2541a6521f69c959185da510e2207033662fead475b8666babf8b4f39523f912. 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/QZHN72314321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d78e820fffd170dd5c91fdf73c78f1e5ffddffcb74f5e3d2f927df45247c40. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZHN72306025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980c2850175982a57e62c2620df0040cf44edca209e7687786bfa0e7a5208db3. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZHN72306026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7907c06d5eba81b7bd672802036ea8b839c0460208e55452924b3ec3201ab45. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZHN72306027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a24442ccce8897529f3f9c1cfbce3a410f285bc4e9082f73703d116fc67725. 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/QZHN72306030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d15a3532baf17159bb8eb7fbb00d2247a92a1ba7d2abff3d43d5fe01a63177b. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:39:03Z), 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/QZNWZ2349436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee462cb03b37b0dfccac9be697e2fd5e06005679fefc46b647c89c58e3d3ee5c. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:51:43Z), 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/QZNWZ2349437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6751f49a0418696f8d174cf76b41853ae78b9f040a37656f37a43641280c62f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNWZ2349439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1ccb2b85b3e5384ad1731f6ef2a9a1bce10209add997a6cfba0d7dacacd6ea. 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/QZNWZ2349440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0814b1a6ccd073907c41848a34c61cc07d065952180bf89b9c97c8da0674627a. 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/QZNWZ2349442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e8fa4c258671a85921ce378424fb51d950b1919c7e4f9debf18e31b44a909e. 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/QZES92480997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854719c70bedcdd1e4cf470e142de734e5b44d2f828ec19e4569096de45d8790. 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/QZHNA2426320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9306b6207ad7b64ee6af0fd73fa91af973c8420d784e7e10cd48d34a1277599. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:23:58Z), 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/QZK6G2481538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a4672ae54332c4b5e40a3c8240b310f8cb6e5138695a2d7c4216635a1be1d6. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZK6G2485725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d371af0c1114b9dad12fc2a45453e6cceafd1b9493f2293197aa5531000fcb. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USLD91760669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86847bde7d7cf717eb1da958c37b926d0f9b0dd6d4d5e8d1bd65414a02f4bce5. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:04:02Z), 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/USLD91762323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa533aaba4c73125c701b4b9c44ffd971485df349b6dbb93fe3a2dfe192d230dc. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USLD91762929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d0e9f089c96c97927e2ada75558ce0d107ff6fa72e8549f04c415cb30a5c04. 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/USLD91764674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371da0df7f5ea0f408c8d1599f407823911ee3e0535f9acd0859b781ad364c6e. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:13:16Z), 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/USLD91766230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cd3a17b2234a16b5fc8d8c41ae91146aa8a6fc93a17e6d5c11a82b867a4777. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/USLD91766235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ef1ef4a1b9a4e87360dbf38213a21128e3f4ba630fc9179468dec99f25f51f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USLD91766236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9399b7c6be9c1981dbe1b82c59648e9343d07a06b72093dc599cb0ade9209b44. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USLD91766237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d371af0c1114b9dad12fc2a45453e6cceafd1b9493f2293197aa5531000fcb. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:11:53Z), 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/USLD91760669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86847bde7d7cf717eb1da958c37b926d0f9b0dd6d4d5e8d1bd65414a02f4bce5. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:51:47Z), 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/USLD91762323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a993225395ea3081a504166add626bb85e4e669d806bec3bf42198ce356198b. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/USLD91766238.