thumb|upright=1.2|Glacier of the Geikie Plateau in Greenland thumb|upright=1.2|The Taschachferner in the Ötztal Alps in Austria. The mountain to the left is the Wildspitze (3.768 m), second highest in
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 0x2d2abb09ecb61cab9d8ad2d65a446c372a44889c4ab031556bb2664221de8289. 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/2ce90957-0419-450d-a865-8bd2e37a1a10.json and https://artists.proofprofile.net/proofs/artist/2ce90957-0419-450d-a865-8bd2e37a1a10.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 0xeedb49206b14a91dd1b42851086a0bdc1e7e4521d0f01c0d4b979f1e13b73de7. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USLZJ1523647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c15481b999907190f6de8a6198d672b4fe06a8fbc9deea5da8b319b8e252b19. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/TCACI1524312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614764cb7a0d543b1408dcc2a3eb41805ea3df778b403781e8da984fdcc2df49. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US3GD2512783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea58867db3694131bb7093a31549bf991532a4809c60768921818010420dfa07. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CA6D21900383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cfc8cd9fbaef913d57d209082afc976e73809c24ff14f15d6c3d5a2ed87944. 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/QM5LC2100279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fa08c394248d979ef44c2ec17b81d67d8aa2c98fe5c5336cf139f69dce7aa9. 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/QZTB62273412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13984b13748c31c836a52fbf0f77064279b3d8e3a70ff02b8a5c5ff84a953f16. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:26:57Z), 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/CA5KR2372976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b650203a8ec8bef892104acf48252f472a75fe19db72bd90f42c274fa92c0d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:58:44Z), 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/NLRD52258039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9351a51f3cb1c265c2b723a9861fca7946ffd00601c576d178e220da69e408c8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/NLRD52258049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd554dc0d8449e0d847c2d578d66e302bbe8ac0d2c25d91909796f0dd00b324a8. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/NL8RL2436385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98968aeab69b449d209fae03421e5675c4bf13cb4413ceb411be5425ae64c59c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/NL8RL2436387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e54d79c76a97792b941cf9648d15d3b190e5a5d0ff8e0fec9ddf522f4db400. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/NL8RL2436388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742f0aa4da449a00110dd6614bfaabac322fcb82039ae0129149ee38bf0f9b8a. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:27:09Z), 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/NL8RL2430906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3034dde6a5354e55129e8bddd1a3e27bbc34b8ef1bd52818900c05b1e03763. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/NL8RL2436389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5838a95425d6e894faa76f7969055a8919cb0dc15e7e6ba26104f6099777ff. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NL8RL2436390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f50b3eb77fc23d8d3bf2f1d18015a81025c411f6c532e749165e3577059b2a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NL8RL2436391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771ba11dad707867f8fcdd82801543a976f306bacfcff7aa1f9cf1a1f23bc6a6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN82586516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e8ac65f8e83b67840524c8266d9d38a02c91974c3a5b16972e605f8ffe7e18. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/CA6D22100781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc672c9be6e3e6126bf4407e71ea31eb4cb58643a09ef76585081bb7dca399d87. 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/CA6D21700056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea58867db3694131bb7093a31549bf991532a4809c60768921818010420dfa07. 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/CA6D21900383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea58867db3694131bb7093a31549bf991532a4809c60768921818010420dfa07. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/CA6D21900383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02307877cc8a5c637aec4c5b212bebef61f107d46a6d25fb1dc19d02a5ac4b71. 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/CA6D21700115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1a8a81d5e15b4da5d0e2504179ad41e5e325c4ef775aba29a61c987b559552. 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/SEUM71701083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6625153a5e83ebbef915b9faecd8ed82a885b8e5c32c01a0f70b1f55e477ee4d. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:52:41Z), 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/QZVK62300039.