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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53fe90cf0905f7965bccf7a35da845948795cb7fd5ae87802c80606a339ad53. 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/f961cb3c-c547-4f7b-a70b-dd0d78e07867.json and https://artists.proofprofile.net/proofs/artist/f961cb3c-c547-4f7b-a70b-dd0d78e07867.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7c17d753fae62aeaaa659db5142e146a0992ef7b64a6df4fcd085ef5b06898. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBSMU4749277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44552d17bf5b899fac50da72bdf41b19eb1c257e51ec7cf96dbd2c0fd30590e6. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GBSMU4749279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6ca6f8d4e6ba47d8022db023eccfd6f858601adfb66cbd650363418c301768. 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/GBSMU4749282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d067d9f16a0f17cdc34436eebbd017e670f4a51a1006fb74c0684ffb706bc0a. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GBSMU4876256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25948817614564dce5b630660b254c24cf7fb2c6816b7be8ddf6873a777dff9a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/GBSMU4876259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0f3924d0fdcafea015eca3665257da5b5111b51d17a51705eaa8bddd597e24. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/GBSMU4876261.
¡Con más Poder! (Huaylarsh y santiagos 2018)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1f01ba4ec3dc3e3846035ea6239f6e3dd2e07c8d4585d7c18ace7e7d2ebba8. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/GBSMU6205501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f699d787a61f0fd70b44423dc46cb50183f04eef05069b35f6641190a6948a9. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/GBSMU6205502.
Puro Sentimiento Tunantero (Tunantadas 2018)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96474294b1eea919a8d5fed0c96755f87d54f4b927a5b1b846dbe03c48f36424. 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/GBSMU6270628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e8d377ec8586f396f5a3c5b741cf2884f488b2d9b9c55c83aa715a5d6f5a38. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GBSMU6270629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fa969ba38abcbc215888ed87f93bb8240dfafc0d78d0a2ab8b7523cdef56e5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBSMU6270631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd1e7da44af18633a6d7c217d3d822a5ce35b6c6177e70611a11f9f95be0b99. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBSMU6270633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd747234e74f23a3381c70a38d3322fe4b279a8205ef6b44bd172ca942bd8fab8. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/GBSMU6479480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da108ef26efb34d8302802d34033a7fccc17d3c2a93fb42ef251e7dbf334340. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/GBSMU6479486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ecb8e7c6ed49fd1cd732cb59cd942eb13dd43bc332b3b20d9bc2bbe01a0d2d. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/GBSMU6479487.