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 0x791200377c47f2d8df080e9eed4b9e634ba5d5e373ad922f8842172e1a5027d0. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8f60f4c-41cc-48e9-bb22-6165f90f10fe.json and https://artists.proofprofile.net/proofs/artist/b8f60f4c-41cc-48e9-bb22-6165f90f10fe.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 0x1546bd00a3d07ad4af5c4f21f7a2ca5bf8126d98c87cd717c4a769701a5b874c. 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/SGB502503783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a705be7b67564ccbb7e8f707932ff6369b81fd1775f44f4bae40f74fcc083bf. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/SGB502509460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab897b56292447e35433000eb43152a60b9d6d5f9016c62af619b3d19953178. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SGB502508055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf005425188eb1c120967befcf49abac615877614fc1821ca8da423744cd69751. 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/SGB502500683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d270fe0802e81d0c786c8d61f940cb6501d9c1222f167e0761cb2f8e964934b. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/SGB502507602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe66894ca7722dcb184a27eb74b08fc636c614ad87ce1b279afed34a723548e7. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:25:30Z), 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/SGB502506155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24daeb7c2991ec6164dd90c75de4ff0289ae6b0b83495b90ba7dbb9b0b498cf. 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/SGB502501497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e37e4ed20cbcaf905ef7f62ab533dcc5b0718bd8db5a6842833d0bf590b35d4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:36:55Z), 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/SGB502504452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b3459067a15790008617cf66d2190e207476f398edbb0644ae28ef3a320f5f. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/SGB502507172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5274a09ab96f53766dc3228cf5d6d741cfc7be1c4a3b4693008354d15d8e50c9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SGB502503605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f1da441e321c8824dae51fcd137bda3b0887a9607af142a4ef58275a07ea5f. 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/SGB502504832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129f0d57773bf1ebf6b80013a2ab8895abc1c4b729c481f482f03d9f1d48f735. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/SGB502504287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce27f44876342272da0d16082af565bdd56100270c0040249f25416602389bf. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SGB502504227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc7360fd376f87f17be3d96d364f0d926ebc47115fa975762cff8660606306d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SGB502501728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1af2bcac58769b1c9130e6b99cb52bc17cd6ae5ba672b33f678ea67644dd71. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:39:15Z), 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/SGB502502548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c192638848ab9ae112f29b9e4c75bd1325a39a44476c86b41b82112bd914d1. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:23:21Z), 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/SGB502501467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d1a863fb73fe7717013c96176b9b7bbc53320a1821201a1decc3e2c8980dac. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:33:19Z), 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/SGB502500129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82687ae0b5ef5ab72db9787b6bb078120ad205bf51c9eaf5c3aa38741ca2c45b. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:24:54Z), 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/SGB502505244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf047b13289e6e5cabe3b630880e672529fbd7e5beeb6e29c2b7062f848c263d4. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/SGW502506636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d54b3bf38eebdec93fcd083a0288ead2786cb6216190f4f7922a7b2482d4f00. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SGW502500319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec660db106c8502a9f3fbf06a8e581cedacd2ba815afc2d4db3c30385c2f39a8. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/SGW502506316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9acd56f5144daf82ea0afa064ba324233cc35662a462e7577918f3d695edd184. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:40:55Z), 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/SGW502502467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f4f80483f75c8e464afb29a6dc286ee967b46a6993c4ec06ecfd8d4b49b293. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:47:33Z), 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/SGW502508477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f79bdde2e981cc7c16ef89f1ae326d37a8fecbe1b127fd1b82c2b727e1ad16. 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/SGW502504576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575507c92a439b96c53c3bc94c5d540a4db11c9a10cea767be7162d79aa69364. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/SGW502501290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c5baea29f4b95d82b660f1eb0f42954feba06b3deac7b2fdfa75e06d28540d. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/SGW502506829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b3287ccfcc9e51e526aa25bfaedc5b826670e1f443285548ac68be39692cc3. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:09:54Z), 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/SGW502509820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258a7172b7cde6f534a2ee1697e24dbc7fb4ca231ab8cb14d2bdec52f544b43c. 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/SGW502506097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfacffa75469d6c2755bf8acacedc5305dfb27c435b8e9be636727e31013ea13. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:50:43Z), 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/SGW502508909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6055162aef076389985e4af2e444ffedbfca0f05caa9f65ba38be30d449e0f11. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SGW502506939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc1694ec52f0f8ba19db55da9ea17759003a125e7444b54e37e256f73fe19c7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SGW502501824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5beba05da9027d6f37d76979ad053998a62b03dfe2bc6f17c2a225fd7585b0. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/SGW502509562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ced7de2543e6bc78a2d21397e61bde1a0069175d50ce176dc3b3a0cada9b688. 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/SGW502501183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a94950f3065b5be9a7fdeee3ccd1cb14b82df02396954857776fd7c120c86f7. 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/SGW502502230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c19a4a60ffac52fb1552128aa3628407d61d582b43480e7207a4b1eae01264f. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:04:50Z), 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/SGW502504398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af99f2ae10c8f2e9518c62809e4d90f95da425f91f4c687ed2d247f127de435. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:37:42Z), 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/SGW502506225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c214ccb2111fcd8c8266f145cda90e50ac5d0bddb31e8a2444b3ed195a7093e. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/SGW502501169.