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 0x4adc637711bc35e4baf87e4eb73da2aeb6df79f56dc70c1bc9c48359533fe632. 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/145106fa-5317-4b0c-a12e-f8c965d37c43.json and https://artists.proofprofile.net/proofs/artist/145106fa-5317-4b0c-a12e-f8c965d37c43.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 0x6e3fccb7a070e15728f1b9ea0507068650ace5f36b44e13e3e4e6c71edf0650a. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAHE2365823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef0e6c9dba346ec37e5e4acfdb31ad1d0f2a4a8ffcecfb9e8c4af674086c123. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/TCAHM2318913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd2a44ee11bc2dc7c1bf113b853b4f140c9901a6c0764d52fe0e12697251028. 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/TCAHM2319040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bfad7298c643239fbe877a841c20e131a0caaad47d67a7aa4a936a95eee0845. 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/TCAHM2319145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bb357d2464cc06e9f85ad7e3780be7add07e169da6059fd6beb0ad1129c6ff. 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/TCAHM2319188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccfbd1551850cacf6ef6d6f6079e101d47db352c5097a49c5bec61f69ecab85. 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/TCAHQ2361894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d6ab44780bf3ef95cffd529ad367d0f7aab3e5b6caa7e65b8890091c9714bc. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZPEW2428122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d6ef910f2ef4b9f0e370886735a74071bdfba881e2aee283399f716fac6320. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZPEW2479910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a77c72c78ece38116642a416a6fd3a21f919fb98d0be9c96687054481607d16. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TLVEM2470323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46dd8fb162fa4f0042acc22fb9275a60d9c0786b2bdf92e1a20c98081a231721. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QT2VB2506031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59babfe9a90f59b59b31121e9ebeb487b26b76396fd9387b33c60ac15ad7145. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZVEM2572706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae7ff7672e56368ce113ac04a09a38c2b51b14feaeac84b25a01ee94fecd433. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QT4K32509455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4419b83227709a9a769cb5b71a9467fcbce9ec1ec13ce6473595855e5acfe6c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:23:18Z), 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/QT4K32521209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da9feee3d038af4c22cf290d661f5963e5536d5f92c1f19d53aae9cec4a5c18. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAJX2599194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df7ef3cc4b352035b7566286c8f324fc11bcb9fe042a9f6041fb08898b91f45. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QT4K42574365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50413f9a74fde198005d0d597af9efa3df7ffa213acf4ccd583bbe4d4d30425. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QT65X2556941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a768bb832d42c0b4807d96e90749a80fd6e99385bdeed3bc6b8561768ae619. 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/QT65Z2544643.