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 0x1b5988c8d70adb7047a6d8930b59f4de8d5fc5c343910130fcf0d9cddcadae66. 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/707163dc-1eed-4b57-a87b-6217d52a2efd.json and https://artists.proofprofile.net/proofs/artist/707163dc-1eed-4b57-a87b-6217d52a2efd.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 0xbe91e425aad31df818b10344e477edcfbff2308923a59e2949cdd0efe405b433. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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/FR10S1895066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5755f2ebaa6e1ee1161232603603a74f4e700e262a4107f740e5bacba2220910. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:55:27Z), 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/FR10S1895067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b8edd76894072dd1711b7a84780f9ebd49884d035f6f725cce8a4b2de1e4ff. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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/FR10S1895076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065a124604dd6e45d437524d409e089efec94719a116b2f7a5a586e8d8cbfb97. Chain 2 (Bitcoin): anchored in block 957529 (2026-07-11T06:30:13Z), 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/FR10S1895080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06b1e37ead1c86bc1053ae43a6d2ca5f641017cdfbe95da5486706e3021abab. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR2X42171268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2781d73951c797d5070a6d397c5740903d18e28a23045fc9ac6ec0a45a77d97. 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/FR2X42171270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af7e56ea4afc7029bd322d6fb303371dbca6eb84d3c00bc14abf861216fc21d. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:30:21Z), 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/DGA082226156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d688aaa9dee6984706452466ddf39f7d669d594ef8727b6131aa29b395453d0. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DGA082226158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f4caf571314498ad1df99db4830cdcad3d31d2b65ec79b4068d5ea64fbc24c. 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/DGA082226160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9920f4bbe60c4551fcb35a84ccdfb56d4982e5ccce78353c126edae9394752fa. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DGA082226162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77e5c64f560da7568b81a63b3189a82df3eccf736fc2fe51e9a0034037b0634. 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/DGA082226164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36ebab118b3299dad944f469c9f40f7f333ed45196ffba46d46c23971e09f0c. 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/DGA082226167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0ecdb638bcbad80a571ed664f957fa95a1da4d32fefbdb765403d56f78740b. 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/DGA082226168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41fe3dfb6cd4f5aff3f1c89827398ccaf6e3c0fa888065d05665d49792ed3c2. 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/DGA082226169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cad0079c4d85b1bec1f7ca32682b533800affe39e35662c677c91fc1324fde. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FR10S2030419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715ff4fab411768618969974bbe0d5236e245a58a43f5127cb019831bff0011b. 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/FR96X2193501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa469f48bd7e0ce40129bf1e4205db62039c9331a4906647cf14facb3e37b0a4. 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/FR2X42229781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ecdde658b160bac0a6278125be055905cd5fdf813945c40bb84041d49ae581a. 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/DGA052294744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715ff4fab411768618969974bbe0d5236e245a58a43f5127cb019831bff0011b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR96X2193501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07c90d699d0659e3a8babec2cba218d7c534815e0a507b743adfc0eb1f2ecdf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR2X42372023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278eba892719985f8ba920f3eed6320c0f072f96162466181e3bd0b857cae34c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR2X42372024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47fecd146d415525df5636b497a366a13d0c9befa77275546c4747d724dfd5d7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR2X42372025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01756282b456e0a7e675091c0a4053f23771099e64bc42793bda576d92a979f9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR2X42372026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c7f83f67e81f5b70689c9adb4d5342a8148136f331c6325190d34a1189a1b9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR2X42372027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66d4fedf2945fb3234a06d7c6c4c0f572de5491090211d672967e2ff01ad23b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR2X42372028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a18ff3091bd9716a2b0432b7677214531dc6f60d9eed662f9a2541119b1c80. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR2X42372029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa469f48bd7e0ce40129bf1e4205db62039c9331a4906647cf14facb3e37b0a4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR2X42229781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084940a23a585881a7bf81077f5b9580a0e2afeed7b583b1a62a52b1b90fc367. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR2X42372030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ecdde658b160bac0a6278125be055905cd5fdf813945c40bb84041d49ae581a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA052294744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d1b7dc4d9c85551f1075826120d1630ddf707ea4f4a65f61ecbaa7e5730c35. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR2X42372031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2680f99acdc93b7feef0e91cb0ad866c4e2c3309d4a561ae9cdc4ad4bd916eb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR2X42372032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0b0439673bc1696ed69cdc667c7bcce44e8af70ec252d561529a1c11a2d5dc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR2X42372033.