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 0xbe86de33f31deab40789373fac53c767a893b1009e496f0db332e68a805e5eea. 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/a8cddbd6-a236-4e85-9e71-3a3def4138fe.json and https://artists.proofprofile.net/proofs/artist/a8cddbd6-a236-4e85-9e71-3a3def4138fe.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 0x6153ed4012d741969d0b35800d4fddb7fd5cc0af0bead104aad36b5108b17dda. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZGLS2494423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0881dcb3b08b424aaa0feb8230dec4f85df35f852198e6e159114f8b6664929. 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/QZNJZ2406882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6153ed4012d741969d0b35800d4fddb7fd5cc0af0bead104aad36b5108b17dda. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZGLS2494423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed870998a8ab02a319a351e46ca38a39e33d3dd8ac9590163da0a1343858007. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:39:34Z), 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/QZW9M2469311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c16d3e25e42a62ab7f6dc79d37369f5156e7a7ee640f0f5546db6e75992eb0. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:32:17Z), 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/QZNJY2437515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf9ff012190d403e3f2bb90a0195dd52d93cec039a7dddc7c3e77e40e964597. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZW9M2453038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22965b2e75e355229dd6986c240e665bf81603686585ceda83dd5f3c5f93451b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNJW2415827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca6428573b919dec3f084419153c384464c24df41b8685b5d6563278df34c75. 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/QZW9M2460018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacff378c5fa7ae5100434cb3c764a71a538a2c7e8a38ec39bec51b407ac0425. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBLPF2513802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5dbcc2c2d94ed8f6d17d2b4198285fcc1d7e0399856b0a127c14ed2b09114ad. 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/GBLPF2513836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a641eec634964d1eb94399f32aa5ad375a1d4b55bd083be402113fc7ea8f81. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:10:35Z), 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/GBLPF2516374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadf7ef760ee4f53893145f9d7880532cf14e6dea608c6a3f22faa9933a98462. 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/GBLPF2516375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927e948fdf8f27d2b51b78bce2ae52d29ac69cd09a51c73f05f2ab894c7bcec8. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:33:33Z), 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/GBLPF2516376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb84476666d27e295e3d3ceaae80a6d22bd5e4e892bd1eb5bacdf2cd9dff25c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBLPF2519883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c303531fb9a4eff603cd5609742bc351dcfd40fec4b0e3fed93272de7c4e71. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:34:58Z), 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/GBLPF2521040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052b49e663aea5bc7eee4ae8df39e25f83c364f6d2cefa9aafdf88241b48421e. 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/GBLPF2521193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d22732835bcc4bad29294ce039630950bb21bbc52c3d4d01403ee9d6c7f494. 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/GBLPF2521227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f371fe629fdafaf247d4a5a30f7cf8d2b3f62a9b0ee0c83a6f1d35967501fe. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GBLPF2523950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444770617037709994d2e1c55fcfb28e0bd87850451df43160d5b37e8ccdedb7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBLPF2524847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94debdd6e658437a53dcca61b25c1679345d47d8114516ece0a41eee6f2c359. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:49:34Z), 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/GBLPF2524848.