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 0xde3869543800b3f51e7709dd5348e634fbfc8fec34828ff557e619a4ec937b0d. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ea0ad10-8142-4d65-b7d8-a00881c5182b.json and https://artists.proofprofile.net/proofs/artist/6ea0ad10-8142-4d65-b7d8-a00881c5182b.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 0xf0c25e237e657e0cc7fd6e9782f8de7041bddf7d4ccc8f801b6a745b13a3467d. 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/PLX492200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c25e237e657e0cc7fd6e9782f8de7041bddf7d4ccc8f801b6a745b13a3467d. 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/PLX492200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8758915c1b873dcc63b1dab4414e066f019341c1c2899e776b40eb329021fbe8. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/PLX492200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5160984b59bffcee6fe4575e25a57f9f7a36b072ecae92f3db64fe77f73208a2. 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/PLX492200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a9166e30980d8307feb6546bd532a6e190952b481fcfbe537e9fa49ac6681b. 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/PLX492200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9012684acf1da16c3c505cadaf5ae5694f7f336e091b5a018ccfa95e5beeb130. 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/PLX492200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7edac55c3f19437a6c4c9c215de51e4ad477ec22c39d6642be1e529cfdcda41. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/PLX492400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0999bcd545123e83dadac4850ccf86d0065d8aa7afe9187c2718334cf64314. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/PLX492500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0064377893a2e034bfb451dcbfbbf5d8a5055686758c70470657ffbf882acb4e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/PLX492500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58777ebde88d5918070cff23e63503ccc34ac3bd5a371e959af5b98911b63db. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/PLX492500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b01e0ba019554ae1cafa86f4ccc8ac057515d0ceca24e6ac0bbd2a1da69ab0. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/PLX492500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0999bcd545123e83dadac4850ccf86d0065d8aa7afe9187c2718334cf64314. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/PLX492500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ea8a03964f546e10899cd12c898fe9f15302b37fe4b1312f6814ac766284a6. 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/PLX492500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40d7ffc7896a0b99892f45f20e05289896824190180c6cf7a5d2a77e3545d5f. 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/PLX492500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbd9f3730985561023f96f99d01cb19f9bcfe13850219ee2dbcfcefd43e08c7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/PLX492500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3eaf6b1465e0920a6a8e7feb2d426e2cd15d8f01cf4a5c020e77ce6a2eb1ad. 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/PLX492500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf452cd264384cc949e43f4db66748ef1e07d264d2289c8de858178e0ca143c45. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/PLX492500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc4413693a6c304f460bfe3288735548ef56fba38a4a8f21f3b640c8323b4b9. 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/PLX492500014.