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 0x81cacd9ca7cea7118c8f5c9e367c588aad7265c755f42b1441768c7763183951. Chain 2 (Bitcoin): anchored in block 953911 (2026-06-16T08:03:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/17dc472e-5916-4b80-86a4-bb2dcb16a8bc.json and https://artists.proofprofile.net/proofs/artist/17dc472e-5916-4b80-86a4-bb2dcb16a8bc.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 0x0aacceab433447b5d18955dad318f2f44a5bb3fc0af1ec13e4be803381350a11. 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/DEOV42300117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b6968c7c1f89fd15faf872ce059021fc8b2694501af49bfc154025f441af19. 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/DEOV42300134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fd4e189bf37d412e0b511645a9741da4d7b23886e6a7459853e186e1649cf2. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEOV42300139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fcbb5e82d275fe4983dc70c943aacac477c387133e79e801ea180cde26d2c7. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/DEOV42300115.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e42142494fca9ddb279416284a3e521f2e37e817470f046f1880f201ca53970. 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/SE4NY2106202.
Fantastic Hypebeasts and Where to Find Them
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9119bb5c627841542ba4f1db305b3fe99be9c28fc329c2abc82ec84160743ee5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SE4NY2106203.
The Darkest Dungeons Resides in Your Head
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fad270a69c2b654bde0cf0e585571596a9a2ae6b4096748fc85cd41d8dcc30d. 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/SE4NY2106204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a04876cba8ef6b92c64755cea42032679cb50d96172bb897c131cb055ce5fd. 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/SE4NY2106206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d4529f5ca8a8bd347ee60f9e3291198b7b97f3825fa87bf43f202fc16de752. 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/SE4NY2106207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21b968fc4b07b8c02d957aa666bf305b9c7d8c58c4b931bf4c98ce6ee1c56b5. 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/SE4NY2106208.
The Hand You Reach Out for is Empty, as is Mine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa9dcfec9415dbe45c3c516871d14f660127a0ba535d33cb69b97828680743e. 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/SE4NY2106209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb0ed80292594b5473d135cbb8167a04c4c1b492126f285ffca66d7b98ff76d. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/SE4NY2106201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7948fd496f3a845162da9760934dd4cfd8ea66c22c49d91b917fddc30e68194. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/SE4NY2106205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf227200991a51e892d93a24f516ab0f9926dd10135a5b32cb8922ae13071a281. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/SE4NY2106210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac2b5e744afc4b828bf6ac5ef7893e69b4535c1823bbb56f18bc7ef4b2d4e33. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/SE4NY2106211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd441a7020ef75e65cfb3c87054dd7b680ab6879f91ec48fe227fb53ae728eea. 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/SE4NY1804501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e8ecbe59dd40438535ac833b9ec75e65e665db7a748d99371fd94f2f99adf0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SE4NY1804505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7ae7b480403a6ddf32f3866a604773f5f2589de1c76ad4fd9d000269b64d9b. 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/SE4NY1804506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2b474dd075c95488ae0252ed46f4f719270ef7a2322dc135a762417d6b5cb1. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/SE4NY1804502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bbe812d29e733bba60a7bd520df11a2e86b5e661f57915beb753dfc4d90817. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/SE4NY1804503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe10491a55a4859f5b890e27a212348bd1a4c295822126bf9f1e6dc8039ae054. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/SE4NY1804504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8f7ee48d6566ef97e9972c56fd9f6518242c6224e2b6f5f49befc92d8df925. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/SE4NY1804507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82679c4c453972f3e4dc7ce8c7e647d7873f54ab5ee76f23dc80717a0ae67a20. 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/SE4NY1601902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b04051c94cbf0c1f7f41835cf873425795109b6490a364ae9e49b83f2f643a. 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/SE4NY1601904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18db8aae825b7cd80c9b5e45adb39e215be9cf0ddf9eef129646a1eb77e5d473. 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/SE4NY1601905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a60862cf77e4cf61baf981d06f3beed91c6d866e10fdae63078db861f9d927. 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/SE4NY1601908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38227f7e3d109662a2df1bb63502435b3a47dd9324fa4e53119ac05b5271983. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/SE4NY1601903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0adc1b2e5f676d7ffc442aaa6fd18742e530cba86b697347c0e0dd712153fbdb. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/SE4NY1601906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8f82fe6b5d9bfa13d7de40625265394212eb183a9d00d97702ca7cf11089bc. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/SE4NY1601907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbe492009f968c649ddde5d63d3b85ca43d360ce31fe0ea547d93c51a0f38bb. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/SE4NY1601909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe300d9d89affce7a6c06a07e397f5cb9f66fb7fd5a7789ac0c4b48e21e4504ae. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/SE4NY1601911.