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 0x2d680e9b3a0be701246ced4fede45fa93e94c17faa5f5b5d39ae249af26719a0. 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/8e85a690-812e-4860-8342-0a3bd7b0f558.json and https://artists.proofprofile.net/proofs/artist/8e85a690-812e-4860-8342-0a3bd7b0f558.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 0x7a6108a2f7aff18e1f1c5001e483365ceb8f8e43d2b0d9c147e95f297a35eb6a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZHZ41982347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3798b33c3ec3df98a8f0b6b114db51dd24ed7c76d2545e5e92fddf57626c50e8. 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/QZHZ41982330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa875ecabfaf3e85fa830fabf651f03834b4aabd7f3bfec658d5d56162e92eb7a. 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/QZHZ51942941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac8d755dd951297a7c2b15deaa8f9dd6de1eedbca5abb0fd7e1864d775cb535. 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/QZHZ51942942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44255f4d3666d188a7ad19cf02c4dc44cffdd54ac9bebcf89366151d86bc9fb. 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/QZHZ51942943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bae9143dd8d7dd93297c5280956956ad013c741af2484e1f7532bbe8659107f. 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/QZHZ51947766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6108a2f7aff18e1f1c5001e483365ceb8f8e43d2b0d9c147e95f297a35eb6a. 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/QZHZ41982347.
La Bomba de la Plaza / Producto Interno Bruto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6afcccb69008c740c012abc7f525b08c09cfc359e14032f3d7c57c640386a16. 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/QZHZ51942946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495674083d31fa98e18e4aa40bf42b9fc794b1d4136f0edb11a9952c7800c594. 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/COA6W2300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cfb9dc424319cfd4792fd140df55eb201a21b459ff8b450d84dfacf9b74c88. 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/COA6W2300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82b601ec2981feb9cc045d293896921660fd4e4214ed3904764dc61965cff03. 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/COA6W2300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09464f414003fc94c8a2bb752c0094791a349af45d27b7062f4a8c06b057850. 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/COA6W2300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541c3529780f7862430d0aac79ac5bff9c3d293a464ebd52b985a9ea02b7d1cb. 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/COA6W2300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583c83c2de63bde7bacc15f1c0e1d9212892ca9cc940e9175ada51260a0c52f9. 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/COA6W2300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d78ca51af7e9b9f4a52a16297c74114cb7be7231b5d354c525440c1530b8569. 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/COA6W2300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90109793b6a1f6924c8657e5b35a69a879dcff7a00403ad9209b9408403c268. 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/COA6W2300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09361e3e2da344f6f79cce288fe8d10409762265d6d3adbfbaa2598ef0eff069. 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/COA6W2102938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d273552294211ccc2ef14d2e15c58cbc9e362fb57db6c0c08bbbe8c473e0a3. 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/QZNJX2270163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc618918483b99d60f02ab829226605769fb4b8bc29adb5af6c1a9ac8669dcf0. 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/US7VG2543701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763ab45d04bfbbc2d8fc60a793d64b02b5059c5bfbf9a52f1a48413c652176de. 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/ES64E2506081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9c31e124b2eeab9b2e700c83ae6107b74815e6d4757042cea973a4779aef1f. 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/QZNJX2037078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c75d62e78f19d14d2a9060f349ed9628e928b41f95fd66954ecf9eceb913f8. 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/QZNJX2037092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c32bc9db94f43df0061dc2f7a9375270faca4e1e1816838ad4ff8a6f724600. 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/QZ5AB1966256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851c1a34f38c680836acb2f7c1d36d665e1cac9c44540e351d0e7236f15d182b. 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/QZ5AB1966260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239a417bfe39e16af41006d8f5410674cdd9b3e8ee5f6242ae1a77a98c441fb7. 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/QZ5AB1966262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ece1c04113b02d9bb2eff3d3481323fb10786a0481405274ad9108cec0ce232. 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/QZ5AB1966268.