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 0x414146dadb74e80ca5c0d65540f86cec2c49e1d9c2983cc5ff660daddeea7eea. 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/dff7c0d6-4e75-4722-90ed-2832a9672b6b.json and https://artists.proofprofile.net/proofs/artist/dff7c0d6-4e75-4722-90ed-2832a9672b6b.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 0xde0b6027be4de0600f5221cd4b6a59cb70170077f305d4c31139e0591664d2c8. 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/SE6XW2336008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda734f0a9afa77178e6029df6d95f612be51ec7b7e48257e9e8a208478e838ea. 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/SE62M2250756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788e3772081d89776e105a09700a41b7663b7f3c11d49be2f94a6e725d698649. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-22T01:25:44Z), 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/SE6QE2380544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903f79453e3afe33207ee4623ab0df4e98cb9d3f1b4578afd45fdc398a79958c. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/SE6XW2366510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8bf6cc9729d9c909ed659901f9da4a6f284dbbf850d552824cdd79cf3cdd2e. 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/SE6XY2344803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20c9f779a0758d5d93c5f0030b47d73b9134814691263646fdbe6170009ab91. 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/SE6SA2392870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570caaaeb6b5809d101bdfa363cfcf9b23901eab8684a88257ade55701b9eb68. 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/SE6XW2336334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ed7e88888f9ff631ccf36be1f860731dddc63423299cad11407c97f68b0dfe. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE6QE2358671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa130b872c8a532687255c97cedd5fabf970a82000c2c3c9892968238deeb6529. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SE6QE2291201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f27625cc01cf79df218c5dc346d963cca1ac5b02c3dd63375194c943ad31b6b. 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/SE66N2271366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64bb0b9dd5efea8506230862798bcd07d7a6450899815f9550612252a137313. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/SE6SA2316372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50052a38ba7e9c216c69b8b61e5918356a3ac12dab195e10ca58779a5e4f0c7. 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/SE6TI2341441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038df41e79f5befecd5c65ae0eda2cd34dcf7008d6b42695f3108766a36bf37d. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/SE6SA2320534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6d06b1a180ac57bcc2abbae8c1da88bfed2f9147f092534aebe56a198d17e5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE6SA2335159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5535580be752e2907dbb15177a9dcfba6ad2974861e2bb2080e66c00fea536e3. 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/SE6SA2261150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4acbb4adb7424eff3c038e0e7d4d7d5189285a7b38f4c35f6ecc433864329b6b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/SE6XY2321462.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708d93c46c5c72ea83be103ce87767d3026ad49a3185c12cf3be936d7eec5560. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/SE6TI2372551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7626c634fbf78c018078e21cf304bb7c6f0de4a24f281592291e645ee33b46cb. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/SE6SA2399214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0f21baa7f09fff04447d207ff689f63cb4227606587f1b692f6e6e7311598e. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/SE6TI2310602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2f2e12e3fcb9387cf16cdae7ba2170c8c56bcefb5c2d98d24b818f8c3b7990. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/SE6TI2325863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a9468e227bbd34804d8db761c42142dd7347bb7acf6120be41cf6146d01b6d. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/SE6XW2379981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5834aa69ea7e38484fc431544fb39c382fda846f7e7094078158f3d9c6695bb3. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/SE6QE2388864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9f7e031fbad47e29f7928ef1332d2f2403cf9fa06f6dad4817bb0dcf718b12. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/SE6TI2371189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44151c9ed48add2c1947299e42f424f888a1b28ee83015551c4be62c06a23ee3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/SE6SA2322704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa57eace44fd3dc5bdb2ee16d3f1beac77805cfcb229f5fd65201e61dc65fa18. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/SE6XY2202759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4022c1ed95ada81b7ab2c6900f39265d7ffcc45be70f7702ec9b8884d55de6. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/SE6XW2351751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fa629696052e402130c52005fb35b3fef53491b99af5073788484d057a56d4. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/SE6XW2247599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ec75b108338b0e738b59086ca1f48cc1f470022fb85f44e97959f185567662. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/SE6XY2274929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffaa8ad8eabbea67cd50df10902a3342bd72ee652791d4a421db0f73e52354c. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/SE5752317986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2764e4ddb5d8c6f5e7acddc8ade80ba76d90f0608c6988114e5dbf809302012. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/SE6SA2276728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e83a83dfa98e30e1a180e58eedde90ba14ff0d47906db260f00e288cb843cde. 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/SE5752292307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4d14a00e4c2ca7a143f0decabee988680fe9658eed884ca15658cc7b000f40. 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/SE6HN2491977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffff3518d4ded0c230b6a6663b43e25a7669e68b0cfebfe095140cd9d5ae199. 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/SE6HN2458062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d9b646b9994779334c3625e8bbd3014ce848ff465ce0411947dbc8304b5079. 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/SE6HN2492999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c279ddcd72d721651220df5deb4f8c52e654e9735901cfdcc2ff35632245ba. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/SE6HN2493000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b38b5befa5ed7b986b968f94a619f3c682b2856da54d0fd9e606aee4eb664e. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/SE6HN2493001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0721a1e307f645c4426cbaf90b958dd35f262ce7b610a93f94eefac7512a196c. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/QZK6G2469713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92da20371e74a1653656d47673fbe09239001a26ec04a8e899c26731755c285. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QZK6G2469142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd198f23dcfccafe94bde7e87202df98a240d901e8c7d315c765d64939c226e. 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/SE5752466553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e107f8bfaf739a31ddc9b782300a2f0eeed623aac2a6bb75457b452fa1bbb5a. 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/QZNWW2345389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2e7651a7c0608a01230ca1658b7868859eb4d1ecdc9c3ab39c07b2f04b143d. 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/SE6HN2454563.