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 0x37a70c9bd4c251541baef302dd37f14c2d391ed8e2ed7f66464510e2761048c9. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92f2dbcc-f90c-450c-8057-256d92beaf01.json and https://artists.proofprofile.net/proofs/artist/92f2dbcc-f90c-450c-8057-256d92beaf01.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 0x330a97a7e7ace5f129625974a1a75753c035e1fed079e85c80e83f1114ec60c9. 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/BEJS92100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62b9717dc396a7cef507b4f10e7f371e702eec66d3398556509122834198c5d. 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/BEJS92100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa043d744aaac7871453ce94d6f4a5fcb823e31ddbbe553e3370c08f298a1a8e3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BEJS92100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd63faad4c68704612096a52df35301224cf493b2e5c0d4be919adff4301612d. 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/QZHN42161186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fedb721fe33faa663af8e8e2156d67e5ae9c0bd349ca36f90f6de3f43cf4c3. 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/QZHN72183020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3247bf245291e9ebafdb67111edca6deb8d28ae8de1919c19e6daf4771dce0b3. 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/QZHN52194871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91657c5c68105a01ce2ed80d6b0f16da8f23eccf25d95864e0d08403d43608bb. 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/BEJS92000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0aa465b79fac5ce8d8ddb9d29551a3b72c157ae65ec15c5a4815824c38b0fba. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/BEJS92000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01ba878db9b4c0973236de316d98bd6d0f3e74b9a488ce4873bdc558a4f351e. 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/BEJS92000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe865b6ecc53eee732247b1ad21bc4f09322520167f72466f4bb206eb5037eb11. 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/BEJS92000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70a319d9845524f2d9ae0d864ae9c8d0f4a7d2082a2e17fcaac32d6570d1ad0. 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/BEJS92000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e8cecf0be43c1fa8bc51c66815f8c5b0b2d731bc7efede6ccf2fc2f4f261e3. 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/BEJS92000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92484f71c3e50a9d9a19781c7c72888ccd7bcff6c072a8aadad3bfd41fe4fba3. 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/BEJS92000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdfe83d33ca282467a78acfbd99d163cbe21375333a6900afaf4b7da2b774f5. 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/BEJS92000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0e80993973ff79d26afc93a66f60bd1b1e121e8872fbf310d3848f9bb7e9af. 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/BEJS92000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda10fcb5bb011332da7019005009bc80594956770c98c47e18189e5285ec308b. 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/BEJS92000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb0e977537e7e2df609d4bcca6875270bfd82bed5cdd39886bae9513a09d4b2. 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/QZFZ72091485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d8caf229859134b35429983421bdb03cbb3a616b2af0b2d9353d0c5b6e5d3f. 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/QZDA72025395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe041d30c0c98f514236b60cafb2e0a5ef3da409c4804efd775156a476f125353. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZDA72025400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d675a98e649fdc014318be5c66ed3cfe663ad713f50ce0870176322cfd82a7. 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/QZK6G2006397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6304e9fbc652b8fc22532d5135eb2858ba79108507b4979662a7d645d5c7936. 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/QZFZ32488189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01ba878db9b4c0973236de316d98bd6d0f3e74b9a488ce4873bdc558a4f351e. 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/BEJS92000003.