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 0x833bd2742e2466378eace00f9b9aa50f362dcd273139f1b584886b2b2d9b2125. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee37f271-b12c-4199-a559-b4705c642ef7.json and https://artists.proofprofile.net/proofs/artist/ee37f271-b12c-4199-a559-b4705c642ef7.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 0x2639f0e7ec9cc03022d44cf9653497fa9543da8ff8fc048bc150dc5ae4c80698. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T15:10:30Z), 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/QMEZE1754443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d07b5fd9022a4fe3c1ecfcfe1ad83b911c2a492162cdb29e2a4df218af40de2. 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/QZNWZ2027720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1682cce3a5a0d28afce47f9a40861107a908ab09c0508efc4494291616b062c5. 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/QZFYY2166117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa788b16bba438bb5890558146f726dff5207131bd0081e52e7f4736677538e. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZFYY2166118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687f6df8a380b4d53ce4c9347d3f92e74c055ee8b9243f2b9b9686c76dc65e97. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZFYY2166119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9adf5cf18c783faa104d1c5c629ddd915bc23c57644f36c78e0c83ac7b85ea. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZFYY2166120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5af0178c64c844f4a1b40e105d4be6025ca74127a3fdbcb05bd445570530367. 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/QZFYY2166121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c25331c10403f7a9ed2cd20f81172d8d05a5111a6a5131afe1bfafe733b6142. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZFYY2166122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4956f0ecd02c5ebf35e6a2e42d7b55c579c31ba61cba897f1ed0f620d0e742c0. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:10:00Z), 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/QZFYY2166123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795033410ebfd86142c2a7fcc7265aea69616809de50852c13b3e705ef9702f5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZFYY2166124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2676ae9432c175ecd1d9d0be791873bda120bdce1f6157e6744ceb5d61b5fc. 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/TCAGJ2217055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e27a397725c85b88b053a29597cc67575eea364317e55ccc24f7df9308ea926. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:19:22Z), 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/TCAGJ2217090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd688d8d74581750ad15643d4f816273b87cd84ff0d56023a6a3c3489a6c64e7c. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/TCAGJ2217104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc791a20626c21811ae46a78b36fbb145fdced7274027e58c2ab6079b2f7564d6. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAGJ2217176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4ec7b8fb514e9349dbff6799838558325f59e03e3009a9811e6826b194b887. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAGJ2217131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b58a6803864c11312554c3b061d03a85535189cb92661f2ab4a15da43a7659a. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:51:33Z), 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/TCAGJ2217136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a6763af7334d9e486d29b236b7c7d0403016e23502ed5c34ed56bb0204c5bf. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:07:10Z), 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/TCAGJ2217152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d3b26ccad7a244c7ced45fcb201cc1652f1ad98cd67698cc1346890f3318d7. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:04:02Z), 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/TCAGJ2217200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182ffd6583a8d80000b5ac11a23fabc27d3f17912167985fde5b80d265fb2899. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:06:46Z), 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/TCAGJ2217235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d314ed335dde3d36265b0c73a7567557559a76049817852f670862a57858042. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:28:31Z), 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/TCAGJ2217266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a1416b32b1359855b38bff99005347bd3511c2f7e664ac8b37ffb5988194b6. 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/TCAGJ2217310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacba2431766e0e85b8567a344c7c9263d431be8d40adb79c319af0af75a473c0. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:07:33Z), 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/TCAHH2300455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df8f2834624e36e498209d89002989d9d7234cf6cbff0fad0761182c4bf3c6a. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/TCAHK2322346.
Popurrí Homenaje a Los Cadetes De Linares
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b242ee6232642bb36e8f4f2c76d0fd67a79979abc157126fb78b1fd7b3b043d. 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/TCAHR2389497.
Popurrí Homenaje a Los Tucanes De Tijuana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe162ff9be7187da959261b9842171fa351d92d9dd64aa5d7e4445d352299a580. 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/TCAHR2389646.
Popurrí Homenaje a Don Arnulfo López El Trailero Mayor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bb5079205beb524567437a92ed6c6eaa244bbb9e3a68339bb30068fca70596. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZNFJ2404499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e416d27c7b8bb9d93483d913d73c64cde2d4bf9a50c8b0b9d2eabc018549961. 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/QZNFJ2404649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0283a038b67fed7ceb8ffca463edd3967e0bf9814fdbe46a1739025ed34877ee. 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/QZNFJ2405391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222180217ffb73b09d1ccc2f7cafc598c167868b3b1e690d822e6ada7696af0a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZNFJ2406056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188745002cd6d29e74dad86bd5931246c4178d4f4b0847aa7c0d86c9cdf3df44. 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/QZNFJ2500662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4274677272cd26d4445353bf6c02bd1c0f2bcc295e80d43ac669c9d8045b8b. 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/QZNFJ2501543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6652b9e538ca448fed73ce088bba0447173f393f63fde1ec1c23e66d047e92ab. 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/QZNFJ2504898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a9c3df266a1350107e7f00fa621221e54c01b2961c92fc0598b754564f09eb. 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/QZNFJ2506785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75573bd2444cda240c2c2a7b6fb10196a66597949bf6c83e877be1aab210e0d1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNFJ2508201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820fd8c4093f3f88c4961da9db627097b40869a763299805dad28741efdca195. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:54:45Z), 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/QZNFJ2503748.