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 0xaaafe8d723eb824799def6cced11ba7ef04c6e1aacc9cc1ed06d9556b8252a1b. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/10fbec03-7041-46a8-bf76-9967dbdce65d.json and https://artists.proofprofile.net/proofs/artist/10fbec03-7041-46a8-bf76-9967dbdce65d.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 0xd672afc7457a554a51ba3ad5166021c90457e61a2ec57b3dcc80d9d02394796d. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/SEAZC6104010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdc159d981cc24c1b8d5192246ef1e651b0176a58a27ed90cba4b43c085084f. 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/SEAZE5701010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ba1aee3583941bb46391985c6b41103c350b1ecf03f001f23d3051c0d39d02. 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/SEAZA6118080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d04dac6a181a1dffc09af6f72dd8033a5c638112e81c5020d784d1afe6cc10. 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/SEAZG6201010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79669a91f0ef6412cd4ee669e840df6dcadb20030d841863f6a0f88ee159765d. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/SEAZC6102010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b98af29f4865dc3122671ad284e6765a15092f9ae04ed18ec6d404c40097e80. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SEAZG6315030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5623e13d39363e7b913b4dac440d6b02cba2131325670f876f53d5984e0cf75. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SEAZG6202010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e8828208a7b1592d0df254b5e4d6c88eb1490a4e575591c61728a17e15c29c. 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/SEAZA6318110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf481edfa23c858605867948ccb7176f1260de6a9d2cc2659bfa7a1100ec5adfa. 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/SEAYC6405010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6b071af0c77b33753e41c12c5f357a5fec259e2e6fedb9529dc404d06bd1ab. 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/SEAZC6405010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ba15fae012fb7ee5dfc20ee83850ec09450949f47c99e403aac4ce54bfc7e5. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/SEAZC6502010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb90264978979a3570fe2d33e413e71ce1e57b3880bdddf1414ba36b03de8fd. 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/SEAZG6703010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae51ee26ab3f0760ad179edc8e5f047c25b69378324647a2b95bf525511dfeb. 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/SEAZG6725080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575c43e97ceef7a929bb8b704d49c78e37253ca119730b8335e914b77ea1201a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SEAZC6803010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cb7940da2aac8c416dfcbe870544c1dd164c7eabbf0617a8f09a6ba9f42079. 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/SEAZA6912040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64c96da47c9dd0e68b637db874a320afd1c556cbe3f9d52b570bcb58b082578. 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/SEBFO0400395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e2f087f7e30cafe0f7d6fef866e3f78e7fd315c0dc7ed021c673c4b96817d5. 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/SEAZC7403010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa41a2f2208813c798cf6106ddd395b2112cc770d552afdab31cada0eaade78. 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/SEAZG7405010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547f5d5e7d4bffa2c8b7c8f4477ef427d3f4b5ea0cd822fb62c6f68173d29311. 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/NOJVA0627006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406caef3d7fd23dff09ee7b79941a01c372bfe1376eafd5e8035d395c624f1f7. 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/NOJVA0627013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdc159d981cc24c1b8d5192246ef1e651b0176a58a27ed90cba4b43c085084f. 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/SEAZE5701010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a01a5707dff52d9cf045f15ba8a6855134cf880635b03bbbd35a58ff22a2a5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SEAZE9412010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c52bd32f3a480a793f48e1f54439aacf1048fdef2821cc3868bbb96d54c4b4e. 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/SEAZA5803010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fd7c60b9a630d22647ce799d533f7f3eb9df1dda361e3d0c7f0b1ae53f9186. 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/SEAZA5201010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948004e9a29b1692935256cdca59bda2095c906cb31ba9d86daa81a5afc10bfa. 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/SEAZE7001010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36053c108cefacc62e41f076a790999584abb680c2ee337eef9e5a16710fbfb1. 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/SEAZG7406010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e487afa322a5deb534525fbea7ca6362a8b6baff081765b4811532143c558e. 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/SEAZA5804010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffce0705a9c13a756691c4c6d7c8fc6e1fc18a50d74617cee7a08296fac89eb1. 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/SEAZA5702010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769f9f154ffb7044036c677aa7ce8707ed40cdc1fd44b0a2515295affce113c4. 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/SEAYE4101010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66603a5a2acbe933f09474c425f0c781e1334b013c9c652cebad731d30e4440a. 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/SEBFO6009010.