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 0x8a9d332f3f481397c0cde736e1dd8c3da935d324c0dbdf0701aa2465a0813f7c. 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/0b61e6ef-0194-4c0e-92bc-9b9a43d38c4a.json and https://artists.proofprofile.net/proofs/artist/0b61e6ef-0194-4c0e-92bc-9b9a43d38c4a.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 0xde15e84b031a8965fbb8894d204a219abdbbe83bfcbeb10de4b1c9ffeae84e4c. 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/EGA251914740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda723b82ce4abba8f7a14e816c510aa79a811e5550335d71e5e82e604549594. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/EGA251914878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d4f649fd96cd3e42c950dfe07f2a56efaef339ba7e9ff21c3a0b38e4de24a1. 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/EGA251914819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc0a0dd2bd6c23590fef0822b96c04226e806d447406ab70a9c29f8a6f9ab13. 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/EGA251914889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ced12b99d1275dae4a03d59f91aae0179fe55b51cb7f490da6c5e8cf110ec9. 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/EGA251914777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f966f214884c0d754b1897337a0568cae19f64d42de60b7f9d5e117e6a740b. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:31:53Z), 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/EGA251914783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb18ea186de25aa4486da380cdea684765390957d13f7301fc8b9a3548b26dc6. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:32:20Z), 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/EGA251914866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa962547d21d04c4eb3d52eb7ffb0439a86052ead7fb1945c6d1944a04110e939. 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/EGA251901728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39230a71d6013f3869b0918748013ce68c888cc7eba7c2893883504990fc9858. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/EGA251914841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f85823a0cc0cecc2041beb9960fa3e32770c66da589966961c970252a7ec5a. 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/EGA251914861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc7c6d8d856f52f6d8de92ce527aa227448c26a6154b6e4474cb3e101a77704. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/EGA251914749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2574acb43ef356d3428307b7b15611406dfa003900830e494df55db0043396aa. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:27:24Z), 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/EGA251914754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e98c083b3bff22bbe5f7ccaed296553f65348b889161761ebbbbf8877cf0e58. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/EGA251604158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8230fa44ae6d0cc526ed16c2ae8daa43d389fb57e12b1cd11d7f4e065ba6aabd. 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/EGA251914786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d61ad27d8818fa7992b9bd84de2f9c2710537d491793637a7014aee47e579e. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:24:10Z), 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/EGA251914818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c39bc204e89c0885de1f514a7d220f0d1530afa814984f7f5b54d90522212f. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/EGA251914831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8362c97c0755bacbddf33e2947dab61fa597f9b93d43e2128fc07108c1611fe. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:43:58Z), 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/EGA251914874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd6121af7951aeb40bcfe2052e67f96231a088c5cf3afde2fa33a47ed944c13. 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/EGA251914870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f9e3b3aff12541940994d6bbf52c2bf6de0a5fc61c710447fc7176cbb734ac. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/EGA251914744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68040cf87a24872d046049b6b66ce676b0ccdacf58ec2b1e620f8fce220e01e. 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/EGA251914746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecbbf256c0ee3603227d59d73126282394a38f7bf36f4e80538cc19b11da403. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/EGA251914718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f5f2b2295b3ebd98bedea9be704d36826241f17aa0940a6a3c6099c89f1e93. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:29:21Z), 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/EGA251914735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c611faad7e0e65950a7709eec83241ebfd1196d051af1e1485df9a3607a3547. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/EGA251604150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e323e0312286d289a9f457203708cf03a966a7353421403345b6b7a38de8384. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/EGA251914757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f065055ea0dd3bdd1868a614058c8d7dd26d6e8f075f1eeb5f170bd1c9e179. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:30:07Z), 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/EGA251914832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764c5cb3a73457dd73a5e3572c4154fd03d061bcb796591f320c465cc4bfcd30. 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/EGA251914848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945f8808f5a74f9dc9740fab7f20d9c3b1428a66f00c48349e257cb28937f316. 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/EGA251914869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5b9da300d806d72236a767571928af454dcd102495789c634a8bb69c76c5d7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/EGA251914875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c68cb030ba7386962b9b030cbe5f02a8cb535bcca1844b9327ba5227873681e. 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/EGA251604258.