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 0x50f5987f35c07c49154b28bd4e041c3e3d4b3499152cd07378a399e0c19a4481. 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/857672f7-cd37-4f10-b091-1234c353b664.json and https://artists.proofprofile.net/proofs/artist/857672f7-cd37-4f10-b091-1234c353b664.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 0x45a94769d3f0a8d9f9c631c68f55ac8121ff9aba6335ef27629c3bbdd3f07cec. 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/AUGBT2411156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36a6c56c0fa743b985cfc3c69b8010b2de0a125856824429336ad4e1c764fc3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AUMEV2470058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c2c5fd72ae6e819ff5f28fc4787bab8411cfa98f386202631eb5c056bbdd66. 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/AUMEV2463480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4ceaee24d2d177e0a8438924812f4c814226f560c76551c296dd3f988a2aa3. 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/AUMEV2423340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42793e8911216f60f68823651d46839e3b9eb2ba631c237108546f01d84162fa. 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/QZWFF2358102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7210a5b6370a2de6755d3c39065d2e0076fb0689d3487f0ae28e0bb72e681b9b. 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/TCAGD2287336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7988740b95a6bfb607709ad86d7e3adcb04035ba7961ca904b6a65edbe75a522. 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/FR9Z62101068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393a9492e6ab87dc9bd0964fd5b13b02ce2223aa1e710bb4836f1b400ca21b42. 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/FR9Z62101069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf469600a41b07135e90d5f8d2cf2d7bf4806332b496221a1ad2ae6c5da99897b. 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/FR9Z62101070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe75b87849b81214c4db33b57d77c21ee2cacdee35db70566d5a28f6ada7d5e. 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/FR9Z62101071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fa5248fd7e98db3c418b9c5ae47240a60790722add2bf48745959a5b6b21c2. 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/FR9Z62101072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42c9f8a29923804a769f3ac957a13cc17fe6ce7535a03fcdec69fb295736a36. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR9Z62101073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc2d31f5a2d1ef734ec0a226e23461180c50a7bee0e8715722a901b4e6c9674. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/AUOGC2100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4783629459cca1804881a99a51ecad99536b1c3eaf659e2ebc72132383f447. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/AUOGC2100028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582848f2e3f08f7733b67ed52a1c3012b3c5eb0ef7ed9fe0f3cb30b4b55d0d08. 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/AUOGC2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a754ea3d7123de9f42e103e7bdc1dda845ff4f9ed1a2bfa30116628d1a0456. 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/AUOGC2100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2dd90d781c717b5b0b250d32813b12f26aed719b7cfd989c60151e5c87236b8. 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/AUOGC2100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c701f9858f68c1822b25d787e2ea213bbc9e842e5b1945fc5274add0f99f01. 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/AUOGC2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e49821f1c8cda81bce592f61b70668b30eba4b48a7caf132b688909ed0291f. 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/AUOGC2100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977f63c7ba564226be94434e981c3180d87516a6893cd7be56c2ce2f43ae8449. 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/AUOGC2100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57ba55b1e7999a83c9d1719cf06cbe672a1ee260e5a01bd165ca401885731c8. 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/AUOGC2100027.