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 0xa5fde6d658c476e239b47433c85e982ba996ba6ddc04167af15d707fc26618b2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4b31686-bb96-4c04-af4f-37925c38b7eb.json and https://artists.proofprofile.net/proofs/artist/c4b31686-bb96-4c04-af4f-37925c38b7eb.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 0x0ff60621db462b9d5d0d4e5dc58d9dd969ebe236d29aa3d9dea2db7205e5bc70. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/PECL21101003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726e493b824ae7e814e4b93b7817c216a3d6881ec52a7a7b2649b626034ee051. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:19:45Z), 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/PECL21101004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19120965f0fd48e2e9c1bdf030629896ae7503b3eb1ec7f109349e33d1ea47e2. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/PECL21101007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6190043bef26178c234efb20a45bfadec40b022f019e00a3e4a007af5f2ed38c. 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/PECL21101008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93f48f060beb5248096ff11138ea303bacd32aeab16ea8854633d679c07a4fe. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:56:52Z), 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/PECL21402001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcfcffa456c978d479a89826212ec9450344d8ba5cadd8279f5fa0f8e9bc6e8. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/PECL21402002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3d4d39778719b944ebcb9f9dbe0d51f12b69fefb91f47a8ad0e3e1ba3edcfc. 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/PECL21402003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f881177df1f2b4bdeebb9d02448ba0bd4781d94338bcd9dfd6cee3626e5e5d. 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/PECL21402005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac86fde4ce0d47f509f14868dc6dadd1557868376e6a46894b3a2f72428d26f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/PECL21402006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785abcaa2babf4b842eb916880124b603d074c66327fb40f2a4e0a15644a17fe. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:01:32Z), 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/PECL21402007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40065cdd4a8692843910164d1f9031ceee34cab98265760399794982632ee2b2. 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/PECL21402008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75bbb40c28ec72bbafe5de958f234d0fcdad9d36ff6c31e84540b0ee84b8cbbf. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/PECL21402011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ffe4fbf6c25d9ac78defc0063500752aa91e00be58fa9f552833ed4c6db5b9. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/PECL21810060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab787dae5d2ca95781493457b453b42f1686633b4a27cd8a0401356ecf8b836. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/PECL21810062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008404c5162fae28d04773533534da8060aecb91301b77cf712a262f5e138311. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/PECL21810063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a72cc23224d6df85ac495c6d6f15a86c7eb5680f5fc5922a7d9fb66848c1a6a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/PECL21810064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b99e16a4a8c8b71d3b7007e89328e4bc20890d4cd12f24fc44994cfe8825a90. 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/PECL21810065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6a9e3089400ed22df6e3160430bcab5a2d1a14e7f1f1eae02921011cb294e8. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:51:38Z), 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/PECL21810067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeca5e4d782792075addf4bc43b15f699413813db7f5c781705153b7e1d6325b. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZTPX2535086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12f05ce398a1064775c4d921c5dcfe9bab3ec9a0d79c376ab815eba8eeb69df. 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/QZTPX2535087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb054f104b2fc821d293317057bab09fb445a05df2a07fd52d02c0a155be77e0f. 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/QZTPX2535088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f445a07bbe23741b71e256ef683d25f0e81e94cce33783f969e9da2d810753. 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/QZTPX2535089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54aa7b5791200ee94bb054d7e407d13ecaa307b56a5059df585a159336905084. 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/QZTPX2535090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103130573a9fe67d9554f40565d937f09411018ed48c4de3702bb8f563666209. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZTPX2535091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8079cf3f62f58272b86f85575d04efa6bc7daa5f4865e1835e2d0e1c199280e3. 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/QZTPX2535092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19931d4d787d763b1dd24c57678d5aad520234d82616174f75b87868b1c5e85. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTPX2535093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdff87be69f6128c84e789dfed75871b09a8ae9231d5fba596719450ec5268e. 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/QZTPX2535094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b58cb6405e0e972ca05066d7e91907011043dbbeb4594e1dd26ade52453a763. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZTPX2535095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf7047728fa101c11deafd8ea406b29bbc6cc21762f9dd2f16e0b608f4413cc. 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/QM6MZ2079687.
Cuando Pienses en Volver (Versión Cumbia- Salsa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a6af38b5a3084609de467e340529073a7b1b620027eb7be5e40320b03658b6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2052029.