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 0x6a65e812c587de56332beb6831d2ae21d96b7ec30510deb712851604d344e773. 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/77612725-99df-4eb5-b972-a7d235222aeb.json and https://artists.proofprofile.net/proofs/artist/77612725-99df-4eb5-b972-a7d235222aeb.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 0x440aa0d023c0b94b111a5f0e460e518861b4014aea4a06a03c670cbe98cdf8ef. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBSMU8215057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccaec192f56d28036b0a7668473e66cf9f270321c3f7dd45fc87afba291d5017. 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/GBSMU8224851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676d94faaec1f7615146d50b6229858025dbe2adc0cbf650ab1ae6a6c75fd24b. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QM6N22575757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114c72a1b6a558bf179f4089a868bc728b6d2c36bed4fc267625ec7dc7f25cb4. 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/DEPI82319317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823d3e92198ce4d3249e5840ea0aad0c0d7a7eeda35d7f01e6ac3ab9516fd21b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM6N22552973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78efb43f89ccfb96674af39e8635f1dbec43bc285b28e122d4ae7d74a61bd2a0. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:52:55Z), 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/GBSMU9522100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bff69038e676c26179eff195c5e926a4dc29387a1e7f67f2a72c856738e8523. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/DEPI82216674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d1dc000f23636494e856f2e47b62a28873b11e777b2c0e9c8176f183ba0f16. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEPI82211248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d4df9fed847b1b9284de4b5b6a7f5e49bc3f4df919f2ece67d4abffdbd7a67. 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/DEPI82306653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c3d743c8852d1cef3dea530631e577445c1b2823c782f70219a531ce783097. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEPI82310751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e471c8fc6941658080af987b86b9d3fe597f253c7db57f9c4ecec757e99927. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:51:20Z), 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/DEPI82324536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32a9d69aeb66528586ac7f75cac3834147dff9f6c1766fc87e38e2c0b7bdf07. 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/DEPI82412837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bc1843bd5e99c891d6d04a2c0d78d8c23aa78fdf89bec1237b88d466269f52. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEPI82435415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505f38113e55a8679a00f15a0e4027ac654d76095ce25f416a7d290e317fbb45. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DEPI82500240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285511c3bd16e9223e7cd979bfe90ebc558931eddce09cf6a35b210393cf1d2f. 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/DEPI82503577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebe3f4661fb28d9a0e74caadb7c55c0c41affb7ebabaa9b990745a9d2a8729a. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:17:38Z), 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/DE1QW2504282.