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 0x824ef2dd4ff133f83d31310fe4c9fcb917f0ae5be500a260484c1b7db00698a8. 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/f0dc8c91-c058-463f-90b7-29bf1b0c36fe.json and https://artists.proofprofile.net/proofs/artist/f0dc8c91-c058-463f-90b7-29bf1b0c36fe.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 0xab2fedd70b437784ca2be1b82140aec0e74782789aa23a44e2bd292ee9d762df. Chain 2 (Bitcoin): anchored in block 957835 (2026-07-13T09:48:24Z), 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/FR6V82497344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4c479f68f0fb8c4ef927dfbb2ec4cae4abc40224e5b13cc3d2a24f9f72b0f9. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/FR6V82497346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5740433cd378adf4a75e9712eb3fcad2b65bc7e126032a422c7a842ec73562e6. 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/FR6V82497351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8359776c5de55593a204e382c192f04dae2a3e97eb85798a3abecc0866897d5c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FR10S1954676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe6364a7474a6d4fde1cd62def12d82c19a9dbc830432f6dc12197931e86a41. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:03:17Z), 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/FR6V82497348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530c23067e8481a3fe6b35bf00357737b73c71d0862ee8d6e7a8c308112f81ba. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:59:29Z), 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/FR6V82472219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af8dc430c61d69bc9f138367201aedaf2b5a40078fb82f2b32871249da6665e. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), 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/FR6V82472226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54db3d728caa64c365293cf2b1557f0f1a5049d3aab7ebeab89a29f019f54f6. 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/FR96X1978875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72caef2c35f2b0c8849d05d8c63a7d5a56a8319ebb838491fcca8523a42df41. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:56:32Z), 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/FR96X1978835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c62f74fac025cfe222beb61bb33f0973fca8633ce6b1c24f21ea8c6b236a77f. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/FR96X1978826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0fdf9bb5d5239f2db1c0dc35ae7336ce64c06646af8f31be41c61d808d61cb. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR96X1978878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154effa13f80db10c4681ef84e6b0d4f0691dd55dcdf7e345a35273e280ee0ac. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:19:46Z), 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/FR96X1978829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cf2f5d87a6ca8d8565e2fd9abcb6b660347079b4b5aad0680c95667bcb1f58. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:01:56Z), 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/FR96X1978830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20998b8947ea9529841ab7d8d5e28a0d6a9b143f9f51135cd2a3eaa4db6ab26. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:09:21Z), 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/FR96X1978860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99cbe997c479a44365c7f219539f03c25a08a9021e32014f205ee740682fbf53. 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/FR96X1978831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4b9669f6b6f4cf2d09ed459f6eaccbdc0fc3df5bdb40eabc7fcfc18052b2b6. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/FR96X1978832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510ab79e0fbf82ad21e49591250b0fa453199cbb4ee5742369f2cd6e2632cd39. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:47:25Z), 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/FR96X1978882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7d171dbc940f0e7ea24eb75840ba7f65a0f13667d87787f3fb3f9edaf49748. 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/FR96X1978883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0270c15b031301ebbc4c491e7c78eb2964fc92b168b3fcdc32605e8e7515250. 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/FR96X1978844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd84bea4ed9d208483b3b93539711cf2fe58d80e37b43cb53067bd91d7b6e8e. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FR96X1978834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7269a497999a2fbc15f457e23d8ba56e16a768b2487ed3502bec84f385f5985. 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/FR96X1978874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c111f36d29bda059b7799975cfd230e612eddbf93a52f2d63ed683d4a158a6. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR6V82396617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b4d3528e983d1ce817babc223613d1ab3f2f8e42860b9afe7a255d857f0597. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/FR6V82485006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e6f4380a0ced0d92b209525dbd03fd1dd9fe819139ae5648d7e1a9d3942f6b. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/ESA012443958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07419ef2898a1f0aecde7c9b77388dc3e400f9cf0ddd76f020303bdd82946246. 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/IDA307170055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5110d3fcd113753b3430c1fa2bcb08ed8578507399e7a17236dc7bc87f84dc89. 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/IDA307170131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f8acf1bd7f6632b5235874f4d6dddcf951d9d11a8e9669f6d80a326cdfbbb0. 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/IDA307170133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7fbeadcc5f2e8c8a02528500603119cf09e356e1c99e12e1c87e61e4ec35934. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:57:56Z), 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/IDA307170134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96185e21f9c5f26c6608222b8bb1b55c8f772c1e6570cd621aba278dc57b91b3. 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/IDA307170330.