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 0x705894e9072e37e44d980d37f7b19a2f38628ba0079296daf507b26e6aa7ce82. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6ddab0f-bee8-42ed-95bf-5761dd53d931.json and https://artists.proofprofile.net/proofs/artist/a6ddab0f-bee8-42ed-95bf-5761dd53d931.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 0xb4a44c519130fa8453eff9d53e3a53466211487fe329a6bd238599f65b36d90e. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:00:47Z), 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/DGA072313139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194965ccf2d354e58f715eef1a5e22c31d0cbaa9e013f3d99d208e63e86cf5b8. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:38:41Z), 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/DGA072313140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3add408516a1c1c5fc5c3c90978e35380edc2ed27e4348b9c82b18cadb6a45. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:41:32Z), 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/DGA072313141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5d40f5811180c25589f761224c2546f3cfed363af2060a6a09f3dcca3eeb6b. 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/DGA072313142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183ed0356c72ed0d58288f831a27bef4ba3905aada025b8128f09854038aa030. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/DGA072313143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8ba4f06ba2a2572a24773fc2bdf6115316ab299e48d74d2850bcd8b2fd0ce4. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/DGA072313144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5beba67cfffa22283863d0703b523f18641aceb3dd16e81302d6c50a3538316. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:21:40Z), 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/DGA072313145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1207c89f2ff51880d0aa6b8c5ea6c0a4a592d1daab9600df4a3d19e6ea36ebf. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/FR96X2471736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0645634ce0629ccc29bcd616c2b5d439a9b0369cbacd53fd31d4490c0eb572f. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/FRX202414514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ab86e2c0753a9b56fd877c8fee2cc40a58ea7a86af801133219aa36a246c1d. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:49:21Z), 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/FRX202414517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f00d688aaa426c12f71187d0ccc5208fd03ef4d1aa7b9a3792434cb50dd285. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/FRX202414511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea6a4b595d07891371b4e3240cfb61626f72eabe81b21af34cee6563ce39c74. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/FRX202414513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d12a0cecc77ab7092c0a4b563f0377ae2c11ee194220c72143afabb39e19964. 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/FRX282434954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ad341ff41b19e743d423e95c19724990dfab048ad81218a50660d63ec7c656. 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/DGA062445092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91eda570939dcb216288587226ca19b92ee160b046ba0e6832132bc1e4b2ebb7. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/DGA0P2434419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580e940af7657cef58f6c45bc1f7738f78626f7413d6b902df5834f2c66550a2. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T14:58:08Z), 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/DGA0Q2468650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727144978bace3daa9fbfc7db87334918a22e5e1b6c0b7cc0f326a29d55bb1ab. 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/DGA0R2441889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abc38ded8f3dc46263b6c97b9775c80dbd5362f70c92c5fb33b819abd198ea9. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:35:30Z), 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/DGA0R2441888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc228a231157a37d9eca2c212ddf14aa38eb729528d8682a04810df2e73628075. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:38:29Z), 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/FR2X42594766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7226d11505225de0ce359b9f0ee39a733cb94cb7864a30130d6704288500e928. 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/FRX202501317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdffa330b77c037b645ee6256aa164cd9a0f5703353e0adf0bde7a603cfdd37. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:07:19Z), 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/FRX202539322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5213f5f117663c36405d9ef81fec6d6b57222e88bbce9fb11cf2d5e2d260b351. 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/FRX452586514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f2919ce542e7155ccc3c9aad804e07e3bdaf393307dec44c6d313511799a77. 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/DGA052529130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556dddf8df66a9cda9b25b13c6673289c22d17e39894e311da0462f3aa551814. 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/DGA052538330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a025370d77daf4e9a6a5d44f778875c7e082126834804c545b275bfa5676b8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DGA052599861.