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 0x2b269f55dfd983ad9b2309e9637a2dce221007862827668cefc96cc6461e3b00. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4d4a6bfa-778d-41b8-b66a-621b8e58a295.json and https://artists.proofprofile.net/proofs/artist/4d4a6bfa-778d-41b8-b66a-621b8e58a295.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 0x1e39dc291f342029675b86361e46a2db1d8e7ec033619aeaf009e862182102f7. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTB52523178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f8cf25a2b796ecf39950a13ac4e759ef79152a242729b2b19e27503c0f50ae. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/QZTB52533901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18490df4cbfd9734f3f8e8c1d4a8049cdd66d2ffc43575c8f3d5889d6287a86b. 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/QZTB52579381.
Limpieza energetica,los cuatro elementos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c69e74de7cc0d2d0b1c8c893ad9f86e3f2cbf0f271a1efa4c4962ce6e4079d5. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTB52576970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebdd4c07ba54d99e9344e220688302e8080e6ab114065dec4f1926e571638f23. 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/QZTB52579300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23e26eabfbcab0d90eec2d095d62c25a6494da9dd6b6caf9229538095044a07. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZTB52594667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d745d8375a685c5c6aac2675b0cd8c0afae9c874dca87c13cfba315bdde12c. 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/QZTB62522130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f93f74a175aaebc795650729caa2aba33b647290a225003ea6bcbbb9632423d. 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/QZWFH2522543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35af7b6758e468bcf49637f8a7cc14f3add04adcaa712204ac2b3a85edbdf2ec. 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/QZWFH2575604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de152281750e488b44718957a576f7ea7b219687ecd401960e4b5790247262a. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZWFK2527709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f8a7de03baf24cfea658cc23f1cc0ad17f8102560c064cdf80435558cec90a. 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/QZWFL2585913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdd30f70e7949e8d92c0d8c81d8bafe0ed86d29c7ceda999474e18e6af2ac58. 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/QZWFN2525291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac002196f2e12c1fb9788de0849408c2ba5ddd4a563851bdd5cda268751b7b13. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZZ772561283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bc46f6ee7a077c60c724984809555ca74b631e88bcb4799595197cf60401fb. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZWFX2581467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970aeebfda273f59dfcfafbbf4f39cc0743ebbd974699165842ee033ecd62151. 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/QZZ7T2548042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060ad310609ffa6934434d8922769a28e40893620896086d4447573fb6632166. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZZ7V2585254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f103d0ba35b986c2f4c769e3e983e95154f17a18819f178ff22b7f1e17f3e04. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QT3FC2509540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd68534e1f45f5907bb00d965f9b2689b78573f28d9edaf342d3da4d17e5bf2c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:12:32Z), 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/QT6E52542310.