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 0x3028295756c32e57a8711e4f25fa69154b2919c1c8654d24fc27fcbd3c372f9e. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/702c94bc-94d3-413c-8ec1-684372d14f82.json and https://artists.proofprofile.net/proofs/artist/702c94bc-94d3-413c-8ec1-684372d14f82.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 0x444edd9aa821629c5d9f35b05160c4acf86e30bb4772c818c875ce4ae113aa7a. 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/ES7181281165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7284ef425b3c887f23cdf062fd39c9778d1db40c44f290d0840ce9b83146b7e. 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/ES7181281168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa9c5990853e09efa2fb3b0208e5224d19faa0fbef38eed93d672d647109ce2. 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/ES7181281172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65db3b9d07a3f6c654f092186cd2871a5cda7fa987de5629a7e4658ed4d786f8. 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/ES7181281174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd20724dd5d5df6eb62c032bb0722fd1cc82f39cff70dcfa5f95a59c495ebc63. 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/ES7181281150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee04ddbaf02c30dbe60e8ce8472ef48b8cb877ec99c3aed64fd60a893ba1c4f8. 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/ES7181281151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4ae5f8fadfcb1fdce3ab21145e4b3227b54049b9976682ce896e1efc347202. 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/ES7181281152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5d7346815340e6eb746a3a52ce2d6d5a885126bbaa9c4439038b5357c7c004. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES7181281153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31738922ffe882ba503c83dd438299886fe7473a25e13488e28c555ef4094c2c. 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/ES7181281154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe387be20163df0ef81e6f81b657c6fce8ed764f8e19382e5e1ca9a54379c540d. 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/ES7181281155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44538fbd57311e99a2a2ee84c62e413e25abd56e79c175cb3da8dae3f06159e7. 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/ES7181281157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab8ad36c04c9ab15fa965d1a1ed5a1293603e152cd74f6a1c62b9d130caaa48. 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/ES7181281158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d4acb4fd8dac0f98dcafc88f64c48aa87a8681540e5435083e66fd8a36ce58. 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/ES7181281159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f126d2fea124616a96d25123c542584357dc766ed6ac76c390ab8ac2987785. 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/ES7181281160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc505ce739a086000c5ca46ea90122e16ea604c62976f1e72812acc29897c7e19. 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/ES7181281163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415ef9f7b3b58d637f66c8d7fb4f561dfa6009870822ba17cb27537df43c4604. 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/QZHN72256550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607bfddf7c3c94c00563cae683c6a79dc7947922fe3310d34a8bb38213829e97. 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/QZHN72256555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546fe1fd3b708da5ddd8b890c79899448f2e8995b3e048971a0a71fcbe312ed3. 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/QZHN72256557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3576c454678cc584b3deb54cdcefeb9a397aedd886f4ebab285abb69f74347db. 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/QZHN72256558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb943a43f854d6cedced4f6b600f175303251a36b525e46b99954bf41a5d80e34. 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/QZHN72256561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018d942cb1c20af9de53b30a7e4730248ca4f9b0060f692aeb79b22eb316a22d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN72250069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c2723fab29311891e576fa557755e3a4fc0d06c537c153f9f33c6ea19cd090. 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/ES7181281299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2fcba2a91631bb1fc240428bd4a18345a2b3d158108ebede2f6829c373a5c6. 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/ES7181281301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9384b7214cc20227a91aeef70d304af0efb9960ab73a804be4067f1538077a0. 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/ES7181281307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f126d2fea124616a96d25123c542584357dc766ed6ac76c390ab8ac2987785. 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/ES7181281160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546b10ca707fd2721a3c4e64eaebaa84f839dd8c8230874b061ac6934d298c2f. 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/ES7181281310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6136122843dd77ba9e5da7e24d369555fe7df64eac0b17d643b92cd350f1ec5. 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/ES6080840802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a18b2b5a0f95a7850b2e10651a68892a8c6468d7c785f6af10aed65edc0e5d. 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/ES6080840818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b2706b4e0186307065d21422ec9faa04b2abfe78afceeddaa620be483948ec. 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/ES6080840819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4979393a57be841cf3bcd6e4084a90b8d7f84b988f362054a53843c280681041. 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/QZHN72246415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bb014dd74730fde25f090dc787f0fa0dbc3b08adf5d6feea000d1519f3464b. 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/QZHN72246423.