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 0xbc7fb8c625e9d8a094a14fa1cf0bfe652ad19da992caacd18a8c8c82cc923241. 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/cd48b23a-2857-404c-b5c6-ded7612c42ad.json and https://artists.proofprofile.net/proofs/artist/cd48b23a-2857-404c-b5c6-ded7612c42ad.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 0xe797191972f7d9b6061f0e4df41a3b14160b19180d1d87869f0705cc92349849. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/GBKQU2180349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4f750c0236fe74d353acfc542be1cbb5cce7835da037c89c257f751c29cb3e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBLV62129576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb400db740618282962f13059c19018caaa91782aeb22d33073f2dc5a8cf6a2ba. 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/GBLV62135548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efd769aa90b6126fef650dca6c345634f81a047ac5f55e8a0fc1c217225367e. 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/GBKQU2204847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28361fa293a223a362d136a06c95075d67e94afbf567d7ac2fff0b82b9dde8a. 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/GBKQU2209857.
Welcome 2 Hotel California - Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6316410c60e30310c15342491ea5178c7256cb5f890fb7ee2a35d45242d5e7f0. 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/GBKQU2214894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe49c1a21809189290bd6307a80921686fd7499980c35ef5af8b5aa78c41c9e4. 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/GBKQU2220506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2f49bba8e7b69f51b77154169cc9a07557c431393a7a3647d2abab1765dba6. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/GBKQU2226431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c1808519aeab3707e4e0a8238baf0050005c97ffd8cfc5c6205d75d7faf551. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GBKQU2255326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44707c611a936d4aead55c77198b6ba307ec09bbf1c0e98e731d1096527078f. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/GBKQU2250638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358a615a8901942c0289149af6711386c58acbbd42f3ba96afcf1f66ff681ff0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBKQU2252426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d742c105832c8b07885b1e2941199ff0d1b965fdc0b74a1203caa9ed30783da. 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/GBKQU2255303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ce2f71c9a4b76cdc471353ee47bc8cc60055d72da2e154c3204396807bf254. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBKQU2230047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a734057e444b087d56a686fda7544a5d78d08aaaf256e3b6c7d0270ac353f2c. 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/GBKQU2233464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce483a9df8d7e05789cfa70f8c87ae83fa53cf1c6758e0f6b5512de42031058. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GBKQU2268154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27c49acee83f07164ddc101ff38ae5576346170a7c03418e9b1d56a3ed62d67. 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/GBKQU2243503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73fb3013ec80d2c77bda8a7369e417a40c6d3d82bf939e6d3cbd16598209a66. 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/GBKQU2243971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99393a35995c48d046613c174a3b06138d229d4ecea947a677303724a9c53018. 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/GBKQU2272637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec65b85324face74d8e97f9ce8eefff377d7becd7f8df422f9c9bc49c8f4cfe2. 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/GBKQU2248063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28361fa293a223a362d136a06c95075d67e94afbf567d7ac2fff0b82b9dde8a. 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/GBKQU2209857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1165ae9b30cd5eb2dc4e540b6cd36d14950d65bc67c15bc63205ebf97ffe0496. 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/GBKQU2585651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd82267cf2be2aec5f40efb44aa60bcdcac9c6741245d5ca407a9444f37f3a6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBKQU2588137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45180ce6e61e173fd21cb9be26ebefdd57663e11dceb0eaea9f4582bcbf26fd8. 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/GBKQU2586436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d96af0839f1d877fb2bda96594cdc9e8b6fedd3521d57730c5087a62f2c1b0d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBKQU2588407.