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 0x250ea509fbb11e0ffc4675a331c50b6a9b6d65ae7ae46e5dcf1fab5771c70a87. 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/e64a0c79-773b-401a-8fa9-c9b94f2f433a.json and https://artists.proofprofile.net/proofs/artist/e64a0c79-773b-401a-8fa9-c9b94f2f433a.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 0x614ee6943bedb141f8369abbf493592fe98fd02df737b640afd0dcf41f37d1a8. Chain 2 (Bitcoin): anchored in block 958635 (2026-07-19T00:58:42Z), 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/RUA582103178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b16299ed77e0ee4151181f2e47cd6c2e5a27d9a986dcaf7c46cfcb301f7cb36. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/RUA582103299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa88475aeb2a5ddc028ffc63d70c1f26c6adf6a7e4cf87527c7a466dc9c7546d. 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/RUA582103588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4ea900b359f078a4c5296fd959d6448549bc0a8594adfe2b099c6f74241be7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/RUA582103791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938eedca8920c5fe640b48d1906d1d566929d692f978751f9e261540de9e7165. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/RUA582104002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01bd83af640737d8089c2b7a897ba6ed6881b0f2e6ee3e501293faa7540a136. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUA582104480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ac9c9741ac23a33a67c7e07c0d93b18ec19901e98967d7aa070cdfe85174b2. 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/DGA072180183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494f64215ddcd121cfd6ae06b974aa75f0396e005fc06ce6bfaa6bd1f45e85ff. 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/RUA582100793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27220f4682b16d7a7810760f36c49c584ac1b80050bee33e5d445da11de71c96. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:51:54Z), 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/RUA582101364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec17d392d214c00243c44ae9219eb2f0729c9ec391c4c83a3da43ae723734165. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:22:46Z), 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/RUA322200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a150d72ccb63b642867926bfe27f4c8363725150ba71215d128cd5123d0f569. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:49:17Z), 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/RUA322200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7442140cf789696039f18e82d5ebc19bd47875757bb3d01c6c3fd982484953. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUA322201446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49be1083c58d5f2e2191f7e5bbeba9284b60ca9e6db5e7eaeece0c237ef53763. 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/RUA322203368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86df476d8803bffbc7a56b8b0ac245007300ccc2f433e477860087d3c815222e. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/RUA322300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ac43eee22377835e106cef41f75292f925012850c32199b094486bdfa76c55. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/RUAGV2301645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877f92a5d597bb697eb2f4cef347c2aa7bd84203443d2214cafbdbb93120cea5. 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/RUAGV2404586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc17854b709cd70691d5253856e6bdef096edf36ff2ee284a0894b047fc1e26. 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/QZNJZ2501853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cb7cc6daaae4c343139810e3ae7078389e7ace0239f83c6550e2262a8a05c2. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:33:25Z), 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/AEA3P2500697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785ba96a07d3c292c8afab5f10ac1e5a1e3bd3e60afb4f4ad290e01b73efe789. 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/AEA3P2500698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5746102097e9ada0f09765ced4d49e13b57af55241713b967bcfee1e90ddb86. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX201961409.