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 0x3e6995ccd1e416774a4f7860d103545cf87c8b72deea0ddb381b1f19e62b9086. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e1fa9a8-28bc-4e28-87dc-94fda960076a.json and https://artists.proofprofile.net/proofs/artist/5e1fa9a8-28bc-4e28-87dc-94fda960076a.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 0x7888819efa346320cec545eea5add2235dd40386416deb6d61a229680f65c9c0. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USKO11800699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e886549c492228348a36a3351520473aa72f634d2ab6b9d4458d32aee545f2c. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USKO11800700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61977e6d6441e4f6961caeea17299558057d3e343cf77d425f5e38af4566d2d5. 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/USKO11800701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780bc8f12d1cae36a24d7783b6e40a96dbebfec7280489b89a9bb722cb1e6828. 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/USKO11800702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5005a0998d034e3c6672bc6a857d3ec0fd4fd2d1ede62dfab0b2fd07fac8afcf. 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/USKO11800703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2c4d53cac1e99a7d01b9bdf02c30f4662d46d4fe7e01d3159716d8f44c28af. 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/USKO11800704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd057e076de2a405aa4109e5d9bd6dfb323132406f4d22fc0e665771750df7493. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:27:13Z), 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/USKO11800706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd05116a0a4e707f591dae480b787bdd0fda39b13e5dd6aac8cf01f1c4d5ad2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USKO11800698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7888819efa346320cec545eea5add2235dd40386416deb6d61a229680f65c9c0. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:05:27Z), 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/USKO11800699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61977e6d6441e4f6961caeea17299558057d3e343cf77d425f5e38af4566d2d5. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/USKO11800701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780bc8f12d1cae36a24d7783b6e40a96dbebfec7280489b89a9bb722cb1e6828. 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/USKO11800702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd792a052c75e808fd7250568e4059ea1d6f0ed16c00a9d72df399063a75d051a. 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/QZNWP2451303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd792a052c75e808fd7250568e4059ea1d6f0ed16c00a9d72df399063a75d051a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZNWP2451303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a0b06c4c9094d6e61643f9372d2a6b8b008f2cb172e7cbc213c75934ae380e. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZNWP2451304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafdc0fa0c4bb2c87d9bc7fb6d3c62be453c9ddc878c945379c003e7cbb98d19. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:01:48Z), 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/QZNWP2451305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2c7e6733af753bec3a88c9d59c1da7802557050dace7e99b0c5c2881b7bec6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZNWP2451309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc2b2fc3ead66865d1ea850c264d758c3f9997c179057b68212e1a92211e010. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZNWP2451306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafdc0fa0c4bb2c87d9bc7fb6d3c62be453c9ddc878c945379c003e7cbb98d19. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNWP2451305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05637d5d6e42f640f71c2e225d4e75e5eb0d18fbca673380e52e0b0c07ad3e72. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZNWP2451307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44e577b6eb437db06961371b5a85f1450e9f9bb964fadd56654a54d27113eca. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZNWP2451308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a0b06c4c9094d6e61643f9372d2a6b8b008f2cb172e7cbc213c75934ae380e. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZNWP2451304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2c7e6733af753bec3a88c9d59c1da7802557050dace7e99b0c5c2881b7bec6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZNWP2451309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8414cff5615af1068dc3d4aad09ff03e7622eb0ee9d6563ccdb6c86879bb9f2c. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZNWP2451310.