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 0xb060b6f617be628cc515270b429d6adc34d569aa577104bff290a03545679977. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc287b7c-1ec6-4445-a3ef-2777d9416967.json and https://artists.proofprofile.net/proofs/artist/fc287b7c-1ec6-4445-a3ef-2777d9416967.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 0x3f0589260ed56a41ab0e332403bedd538287410243c77bebb909667690de2b42. 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/QT3EY2590869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23854c8c450b252e3b7e7442c44ea4c1992057a438eb76de9be4c708f9c0d7f. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QT3EY2592625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e68d92b39591fc441041d3106b08cc7d6935a0a66487a471057ee28811970a. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QT3EZ2595262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7235ca239c1322184f9cd8e161d60099c444cdb6bb203c8dcdf32679380824c. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:03:14Z), 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/QT3F22553315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082ad9fa109c55ca5828581cbfddbecdad45cfac55bc9c94c2ce7ff0a2d75881. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QT3F22550659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db19decea9f478a6f32562279d7040aa0ee93a7e72971850982cf2b9c5317ef. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3F22553325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64922d231ccb1a37bfb0192c8f4a43737d4a1f90e323b69be5af2309e0c7a9e3. Chain 2 (Bitcoin): anchored in block 957791 (2026-07-13T02:46:19Z), 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/QT3F22553329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a67adfc7f9b2f6cc69c6cc457a98024f7c5f4af0c65effac06b539fd5a1a752. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QT3F22553313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e6ee5af3bd4afe9da07a770738540e3dd5b0abfb7916d9371cdeb1ff2b704e. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:47:44Z), 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/QT3F32512354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf774618250dadcd1130f12e2a97848f21c0f51bc65a70df87d544b2afbaec836. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QT3F32516005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531f023931e86d94d9cc8a88b82edc497145f281f339e047a2acde52c18e3f91. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3F32512294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60185af6b7262b85572200c01e0214b98ee70c9166ee8c76bdab33143c41fa1f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QT3F32573840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef303aa26ec83eb95d6fc4b9cc8e0a4e82cc248d9a540c947049c608c6ba5d0. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QT3F72515109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8acd40b94caedec1e7ff7ea379313dabff379ab4b583d25375fb048b81c8ec9. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3F72570996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5d33484b8f5f5d34fbd8e9bcb1f6c4d660a0daa89b5665adeed24431f3ca2e. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:07:16Z), 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/QT3F72570994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0ebba3e550346185ea3255f39d657743dea52d7a9cc3b6bd1334eb385c91b3. 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/QT3F72567922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa92dfbb993b2dfa062fcb0597e0133b45f8fd54baf17b20fc79bcfc90e25d6e. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:40:47Z), 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/QT3F72568006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a64e25f46ca01533130b3c67a2f67048ef88dd2ec5af08433545a6fe57b810a. 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/QT3F82539146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3764e4ded64593c9f2586d81b60287c79810cc5fa4a1a8db61f072742cb3eb1c. 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/QT3F82539149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2337c5489e27411a73a6e7b38ec18962980a8ae60486b094015e0baaa268cb2d. 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/QT3F82539143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417e67bde1b2de02535d0fa1a963f5abc25b826d0bdfb4564adbf3a1add4c736. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T06:36:32Z), 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/QT3F82539133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a332598c04cea2eeb9f589307c64b5c6f6711b3d4877be7a8fb89bfb6dce2d. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QT3F82536065.