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 0x9b551cc7edcae1fc0362c883661212b695bc9fbbbeeb00526a1f0bc3253eabf4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c3715004-382b-4ea4-a8d1-4cdb66e34400.json and https://artists.proofprofile.net/proofs/artist/c3715004-382b-4ea4-a8d1-4cdb66e34400.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 0xdcf72889fd0d1c3c5ad6161819efd84cc1932ee5362a17d55c09da20ae050df8. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:02:43Z), 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/QZ8HB2300250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993803d8392be1583d20097967eff3176847bbc82d13f2966c1fe27a3f45e048. 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/QZ8HB2300230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac969ea054ca296311c1e25c3c5d1c2a3f67d7afd8a4912ee29a1359f896f74. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/AUGBT2437675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4baf5c0b199fd66b3ecb26293779260e8f8a8cc4aa1915abbb97d1db1b73a1f4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/AUGBT2437682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd244a75754036158e81b109d84aaa1358443dde9144c900d9b3dd447deeb60b1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/AUGBT2437677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc499a345a0fe894e518f1ded7d7e35c7426e120c27371bbf744fb5c28938b961. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/AUGBT2437683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b11ffebd4a14551d1718ca0703e7541dfc3098681eea17ddfc26cd566a74e9f. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:48:18Z), 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/AUGBT2437678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5cf60b711745aed15716b13de57e8e7cb6bd0507271575b8530e4840631832. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AUGBT2437684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bcd19f28ca7da646eec5a2024c072b252b0c0dcbb19eb8a2357483165e1fe4. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:31:19Z), 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/AUGBT2437679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030ab1360b601cd4c828d45ef075f3fd4c602624e8be5d73c2fff300668d39fe. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/AUGBT2437685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb8beadedb51b0f6714f9f5276d06da699236e5e4c55389e3c3877d1beeb52a. 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/AUGBT2437681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf114eb4f7fe2cbac6828d1ef2e4d41d4421dab9835c92e6deea931411278fda. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:24:29Z), 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/AUGBT2455313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ef02f72affc6f98d6e466d99cca22498c3ba0dafc611f62cb5ed01200d596d. 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/AUGBT2455314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18ad3b2083841f727ab9216eee70fb802d2484be62f7f7b74d1ab971b393bc3. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/AUGBT2455316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9d9f274e2c68ed01a88bfa1cc7f00a1d03904d74060579049f0be771da036f. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/AUGBT2455317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d9d0ef494a3168afab480c1563818aa1dc88739ef4209700750580ef92dcae. 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/AUGBT2455319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ef77a7574bf818d8673a58800587e5c0ae03a698724fcc802de651689a67d5. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:37:39Z), 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/AUGBT2455323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc474e5e7cd933aa3bf3b9aa93a9d54c2a5280b0051875f6dbad1043a029a1070. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:05:15Z), 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/AUGBT2480550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18b4a23dab74ef9a1e92cf59763c3be49e790cfc3378b62b850b5968bb600d6. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/AUGBT2480553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ff030bab6de95173e0ea679543f1574db2f00b3dc6c52e51e66d9ec8cb28da. 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/AUGBT2480555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903720180683d268b80e81397762610008c2e5cf58a5089856af6485d4128c95. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/AUGBT2480556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cc46207b7e700c204b63986c692d92584c1c03ef1a6d082d551b461affedad. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/AUGBT2480558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218647643b4cf3b2d8d82a304957940a262cf695df5cf1ac13cd96cd3a14b872. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/AUGBT2480560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cb7c3327476d45bbddb738129775e1160533fa82a99a1d6ad8bb53e1f4d8d3. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:36:23Z), 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/AUGBT2480561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737692e0229dba82f5a462d414cb90dfa9e644942b9dc5cf66e91be6223815f4. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/AUGBT2488671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1636e468b0de8b6d970340c261fcf191c6452fc45c3739bd5537846ff4f4040. 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/AUGBT2488672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadaef449b593af7c18d9b110571b6bb2f13b7098a7cdfc3ab43ae61c29697765. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/AUGBT2488673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4a84e13620652b0b93912b4c8f7a099c6d3cdce092f6005dea82fc4587dc06. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/AUGBT2498062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeae73712ff149f0f2e49c42eba1339a48151fda9aa975b059bf671a5c6c8d6f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:10:49Z), 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/AUGBT2498056.