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 0x7aeb4c2b75ab01ea450e13f81d46bd2ccc2ac43bff000c5aac85854307cdf4ac. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bcecd61a-f230-4e32-94d2-fd32d6327e18.json and https://artists.proofprofile.net/proofs/artist/bcecd61a-f230-4e32-94d2-fd32d6327e18.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 0x9b0d9a9a1fd41c9f3d3fe741c1fdab8b156462bf2bc51a091bf690a70e13720c. 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/GBPYM0730070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6316e9e27de029af42fd8db137c7172d0cb912ea7e4eeca6906a3e79303d0988. 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/GBPYM0730189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986cdc65c3cd79ceeb0b423ddbfc58f30c2836042423936d19b2bebd9827eb8d. 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/GBPYM0930247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a6bedabebb10701e4633b5c07308af37e438f5d07b675c4dadd098cb843315. 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/GBPYM0930259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1500c550906e51e14df3d75d1fcf3295c44a5bb2bdc492ddb1cef98372f9f80e. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/GBBLY2106994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa52ab0a5319e5383983657358e9d1ac579cb58d745ca8851b45429b24cab34e. 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/GBPYM1030203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c650802f3c4cfaa164d7252e508760d9d344dd022bc48b360db9d0426cc1045. 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/GBPYM0730083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8dd07b88c2a3fd717c7240c1bcabd56768edc729962d63b6b2b456745df8bff. 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/GBPYM1030209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb81a73fe48aefe17aac8a195f3947539b8e003040aa7889d59b09be3ac0113. 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/GBPYM1030217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c92f008a63662e6ab73b9520bd58b0ec5995284ec31335f92cd66e8a9e5510. 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/GBPYM0930171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92aa2eb07734666e8a24992d056bc0f7dd3113d5a0585cb9a9c8e029c3013cec. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/GBPYM1030210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bac4ab991340bd800d4fe4e68426c53dd0f774af648cf6ad35b8789374cc03. 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/GBPYM1030359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95edb5b8c3dff3cb35786bdd6f6c8130b42a095a7b78ab3ee4ec6faaaa15196e. 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/GBPYM0730388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c05a007225d1310b3af925e46edc8567a2905489c8bb740e4d5eac3899646c1. 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/GBPYM1030205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb947580ab55a9b5bd0a1013d88be036deb60fdd7fdee6306ed3f3165c819a88. 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/GBBLY1005032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c47d8d3ac8707ab7ed9bca8e5367c31f3cd6db8a853bead57f2d024948578a. 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/GBPYM0930230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56c2114ed9e93588959f60a7b47bb35e56838f67b39d6ec80ae139295ea2de4. 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/GBPYM0930240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec50ee5a7747193ab7460c0def6d43865aabd4247bef96ae41857f81da98af1b. 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/GBPYM0930242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e8481ea7d6ae7f399abd5fd27e931aacc20947789d89535cf75770a1ff0d72. 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/GBPYM0930255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6ac0eaa2c4129ca0c94d81057a0df2ae8426aaf167b3c52a42490714de114f. 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/GBPYM0930257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a6bedabebb10701e4633b5c07308af37e438f5d07b675c4dadd098cb843315. 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/GBPYM0930259.