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 0x5dd05e37be40fe9a399063e0eb492a5ddf22ae336ca9b7ce68cb5cbd65d6925b. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11c5c624-82d4-4138-93fd-4148b34cc255.json and https://artists.proofprofile.net/proofs/artist/11c5c624-82d4-4138-93fd-4148b34cc255.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 0xd85be735da028d1640f16b1717a177634d73a0410bf1d5bde2f286126a35f184. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZ22B1909570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb90d1f42a60d595f9cf4aa4aa493dff25502c931886de9acbb345f5b99f7088. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZ22B1909571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10742a0d39ce30878bf32da7c988c6509217e7cbb019bb276b5da6235f70b8e. 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/QZ22B1909572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c0eb6d8d63563c02ddc142bec5155caf0083c50190a6d40bc30ee2136af7c5. 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/QZ22B1909573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f6a9e7609476e7a6a033d9a10be8d46c99fe2db3b60b085293af3fdb200e26. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZ22B1909576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb4aaeddb30f95d482258c6b0b7fb5ad54ee3ceb45880b091ebb736c182ce48. 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/QZ22B1909577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb528f7f52ac48d336cc88acbf7b6997c5bbd1c8e2771714d8760f4d32e2b22a. 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/QZGWW1902156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0a34dab7c196a4005e615626576b30b41380820d1818c40483e796872482fe. 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/QZGWW1902160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab75dffe5bc201cb8ba424092eaf2747b9d3034b39d0a76a1273ffe1faabf016. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZGWW1902163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590c0e4daaa554bf841edfabe8986a1580036530de1992389b72c4f037ec2296. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZGWW2025394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205eed2036891e9ccc404ca1d5afd7a0118a9042992e996fb38d308a2520704a. 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/QZPJ32136464.
Quiero Cantar una Linda Canción (Es mi Amigo Jesús)