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 0x4605ca0bb0193eab3e8ed2b011300adc008140e0edd6662234ae3ae9ad3b1ee6. 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/29ee0e8f-79dc-4b7f-a119-ae491b904b6a.json and https://artists.proofprofile.net/proofs/artist/29ee0e8f-79dc-4b7f-a119-ae491b904b6a.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 0xec32a1bc9df4caad0f48aabbda2fb1be007222efceaa1571142cfe5bfdf54961. 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/TCACN1625991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06775b1a4b2036f6b41651514736e31dc5c2101c0852188684d12026112048a7. 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/ESA011791691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3c9fe7f2bb33b2d2a6c5abc154997ec54ea83848119acbf00a5f75d929023f. 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/ESA011791693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28c68a67c9bf3208bf88a1f3272c1de672e36e68aa8b61c38c1c1f836e9aecb. 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/ESA011995326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fae563e1730377841d6bac61d7779c6d222ad4b82e2ef179882e5cca637b99. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/ESA011996091.
De Juicios Que No Llegarán (with Nadia Álvarez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721dd94e491f7712bdc26518467401bdc0d5920c3627aba154fed98ebd192ace. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:55:33Z), 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/ESA011996096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd973a1c8d53013a6300482a4cf707e585bad5e09d4d64fc86337c28b856a50ed. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/ES05I2100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0f47423738b6f539969e3ff01aa819489d03efcee0343e2c623ddd9dd35282. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES05I2100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c8bf500b6421527ada58c74f3323bf74c0cbd479532945ca6cc531f30d4480. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:28:23Z), 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/ES05I2100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f1b6f2c6d42dd9c2d6599aff94212a3b4c55d8992ea9f32023e3ce120944ac. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:19:07Z), 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/ES05I2100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90cef2193cdaa29aa65aa40b2b7efe13062e00f7c79ce68a3780b025a8ccb962. 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/ESA012095353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff083db8af9d78debd5cfd48651506fe4b3b8515c5d08d9fad9c884a823e7feb. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:19:04Z), 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/ES05I2100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f1b6f2c6d42dd9c2d6599aff94212a3b4c55d8992ea9f32023e3ce120944ac. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:45:23Z), 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/ES05I2100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8a0357cbf3479febf0cd2503358a7058cf9ce59507ffd1e00b4584f96230db. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:55:57Z), 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/ES71G2035520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c42c2f747237d4d6cdcc2087fd93b02da864260b689868f7fc5517a2102426. 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/ES05I2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11565b03db974396d68921b2463cf2dea69e60dd24ff6a95b44bfd68b4ad1bf5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ES05I2300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993596022b0b235bf262b89520ccfd0f793cf1f0d3bc4e6cfad3f36a2ec77416. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ES05I2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa83ca84456580967b9133705b17e9e6c47077cb0ff4b1ee08ca864a006f0511. 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/ES05I2400025.