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 0xe21865b0268c1b20bce59aff4b9d9f4a0c1cae94cb0ba08e9280a28ab2946d34. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/775bca68-801e-48fc-90a0-5ee4d58a6ae9.json and https://artists.proofprofile.net/proofs/artist/775bca68-801e-48fc-90a0-5ee4d58a6ae9.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 0x47836ed6a5acd18b2815f80ab8a5719f3bdb3f8c0ae0b8fe7b6a1bfaf298781b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CNUM72000084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18f1d47cb8796d7081b7b40b7532ebc252fee0c5210925aa691eae98bc344d5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CNUM72000085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1008dd096b9c1b7c768863a2898fd564d0703faa9bc364d052e4f90b81b8b087. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CNUM72000086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8edfe1dba3789217a86b06a28150fbbda68d470ec72f34bf74ed95e84cf050. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CNUM72000087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a46ea5508d2026783d760c991a0d08ce3899851a0f59b112274a652615d92d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CNUM72000088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0defe3e14621c65a3f9ee6c0943f7e9f33a82fa7f2707086b21c1cd0423d2f14. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CNUM72000089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe2eff7b1fd57c368108ae5e5249aa444778f879cc789964381e342b88ba917. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CNUM72000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d21894450fa6797cadf6cb02a2356d5089e18ea4b84caaba7e665d2ab05395. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CNUM72000092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea69642d4300c1a8afb15f5c3964d35d996e0fd9b11c3f86b2b2e29bf18c029a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CNZ631900152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220081051ba796258c2454bc2d828c9fbb9ab92df0311d06cad12e5e601f25d9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HKG731713505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15299510beb9b842cbbbe162d7fb55ef05043fe874e9b640cd2279933da87fee. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TWAE32204254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e71ad47f6899894184d541f318ae8400ac6ecface2410b37402e228eafe6b6b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TWAE32204255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cddf81f967337540aaf4f91b2e935f7f4498522ce3709738a7e5086817a790b. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/TWAE32204256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d468ec7dc891a448b0cb6ff04373eee21c75ebbebd1fee984b343ff7391c12. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TWAE32204258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf21a5a883f9db4e0aef8a4734ddc850ae634df244549c582311e0954edc6e57. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TWAE32204259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6247e5b366287c120e5b088fd21f4cd84630b643969e1d93986dfe9fa5b4194. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TWAE32201102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bebd7815770759b2953e776aebfd08f2799ac3ade77d4d226293720c1ee1940. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TWAE32204263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f628b3dc2ef7805989dd3ef3f2ab277fc24096167db40fb69ae08ebbc7003f5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TWAE32001156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebea3584e70a01693e5775b3791e4f96c5dc09981a3d62dc2add0576a4dd7f1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TWAE32001157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f22d559e25649d25e6055fabcf4df3c78c83a66039d0bcd17c67d2a92f2c681. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TWAE32001158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d98295754536707126f09524b65211f4132ac11dc0accb011455849853cf9de. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TWAE32001159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9da73ffb7cad954d7280730cd414245fd23068a713108a030d0ffad7af413a6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TWAE32001164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721a6690e020c2e633e7a9c53da3b62014a98bd4eca613270ea1b94b9643aada. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TWAE31901925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d799d95791200bab50ad94798a7fc0f5a6d9b1a18a9a2f322bafc78fe8e9154. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TWAE31901927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2d3cf66c6f6a60b46b7797ad257ddfa155f398f814e99022ff086af2d68f26. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TWAE31901930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859d98df32637d8aa2de1bba9e66db28a4a14dcd25187939f724e7ab3300329d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TWAE31901931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eee55b42cee308a889e9bcde9a76bb3bfa75c3fde2b0ce18bfe81ade7e65810. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TWAE31901932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609fff609e292707fc22d3e8f3288bcf6173f91f0bc566f0d3277378ad6709db. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TWAE31901933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f23d0df8165f38a2836c9e88fc39346ad0005942ad140429189125b99f61187. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TWAE31901918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6247e5b366287c120e5b088fd21f4cd84630b643969e1d93986dfe9fa5b4194. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TWAE32201102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03bb7edc055f260be32b024b614d6d1b5e1c4425db40f56a42a0c56dfaaf68c1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TWAE32100214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbad0f3ff790477a18c7608bc3f61e9f79dca1ae6a2fb3dd5fd3868cd83c8c09. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TWAE31901942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0cc44813f2b8dccfb5e1cb08232ab15e5a08858c877f55bf6ef8b6aa5a24e1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HKG732281653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d04a0bd0a9af8d35acca29ad138d418e7bc2d2c8e06f3b254470e3b01d6e75. 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/HKG732281654.