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 0xc777b2521fcb2d7674e4ad6610f6f74447280f16f1ee05133bb6a93b358c8418. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/970e3ad2-7f3e-4c0f-b785-ebf155adbd4f.json and https://artists.proofprofile.net/proofs/artist/970e3ad2-7f3e-4c0f-b785-ebf155adbd4f.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 0xbf8b6f19b80d0e6a06355e488417add19bf3776aae782b213585952c42b70bb2. 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/QZDQH2156452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6205ee91a3f7d0cbbd940fba2358d17aca3db3d9fb4e2f3f54dd2d18e5ae8b31. 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/QZDQH2156453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6340448049bd610e70221b56d6b85b991093694654b319ac364cbff09f84b83. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZDQH2156461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115f95ea6328b7566818c2b1118b2e4c70c4d2e2160c063f6cfa9894bfdfd943. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZDQH2156464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c4d76b61cf1cafc22e469199ffb3f2f6b566a78b2cca61680f29f60352e09d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZDQH2250419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3adf41e6ab5ee3247f204b2d20c81596b26db650353c54dc44887fb20acb4b9d. 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/QZDQH2254612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e188882c37ec5e2a1867e7b73f3743c0d974533345ebb369456989769fafc2. 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/QZDQH2254618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e21be257e6fea08e16845e2dd0a4c3a64efb683ac9d3c45bec8cee0cf7d49f. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:06:14Z), 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/QZDQH2254621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55d837fe0b80295e78d8642f7b425636b5f7ca8d7ada56755394543cb7be7f5. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:04:31Z), 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/QZDQH2254622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2458dd377c7697e032930cbb8cb680c9a6a70f936a4f050f8f170928240cbee. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:42:00Z), 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/QZDQH2269771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb7269ce94acf2e1f2dfdd76333416a5b0618f556b00475329c3b48bec6baeb. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZDQH2363415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca3c9f8d79ac64e183d7bb642a1a4e2cf8c213f856bbbbf959d550060ffd697. 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/QZDQH2371126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acbb8b2b803be17bbccca876220295e4063668440102dfb413c3f02e21dc92d. 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/QZDQH2371128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e443feff9e895bae2099ad1457215f2328148166a08eb6652645d9155e3f30d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZDQH2371130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10bd8a8d4e3355d3a1a6016bcd5dd81d4fa5f946029b16c44fe6cde0b82161f. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:09:03Z), 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/QZDQH2371131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71869704cdd41beb5741f315e8d70bc05ea0620d2d76f456df5a5c3c810ce955. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZDQH2371136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf776bf94aef9d7b67b7caebb3a3aa7dad773ecaaf561a91d4fdb38c5a9cdc366. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/QZDQH2371138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea920d3ab286aa8685702ce052a6fa3cdb5a9c61a0168f15cc20f709678fc8d. 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/QZDQH2378071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a4732617dcd7a8947dec2306f6b3c38f56896b86c2b9e4d15df15744203067. 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/USA2P2413662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dccf98e316030a50ef91326ee9f7d24de02603955ae943312051019974083cd. 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/USA2P2413663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41aba2c82f5617d037f28204c5f5127fc06f6798b99f2253ebcb93d874107ca. 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/USA2P2413664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9297286a698760f88ca9daace99ddb1705bcfb1623eab0b6b459d6c497869506. 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/USA2P2430017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5e3c61ae0b6730ac9a5b0c0d1457ac621ea0c0f1ecffcc9916560c8b1dbc67. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:04:45Z), 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/USA2P2436325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312573fd53754b6fdb082a02e35d81ec69d7e3425f2ed1b3559b2bcb6947ee72. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/USA2P2430882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31629fff9c94d881195f6d23dd55765c99b52c45741fc1d2e915279e1365c43. 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/USA2P2430881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf472e2f347f74f1e4e1c824ccc55b8a0a52f8765d6a60d8033c9d806b20047d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USA2P2436327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a50e668d7d739f397ebffd8fe9e3398d0ba5239ee727a25892afb81f2731a65. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/USA2P2436330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549f97d2e492afb851e0a4ba8bb4e0b6e0c454673e6ede25a114c3ad15f48733. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2457206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074aa9de0d9b7de2a5909db1f177adb6df904ee2f5ea9600db282a6f94f40a66. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2505477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3df2ee71925e9186e1bbcbaa7d94c9ef057f98d3841a9df6935a7db401ff55. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:01:14Z), 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/USA2P2525818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbe8fe61c86e6e7e188ac62c154f0a478b5eba3bb754d86e2b909152ddf1ea2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ9QQ2500118.