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 0x2bc46ee3e9d932173cc2e88a0e648060721e72ec892aaaf6724ff13868a82b99. 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/53edbb35-0d88-4dd6-aa95-f062e284e94f.json and https://artists.proofprofile.net/proofs/artist/53edbb35-0d88-4dd6-aa95-f062e284e94f.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 0xfd77d8d31e6f91661003e49c3685d09a0afe7eb320677a6c91c2e6bce9b7aaad. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZK6P2138058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f15bb9d8c39b7413a6564753026ff5cb3da123019c9d56497e1ae5ee1d4ca2. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZK6P2180357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf685a28a1090aae6d53d7332ee8009794291ef67eb3b0f214ee83d103d86fb65. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZK6N2118766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9aedabe9c5a7b909a7bf3b8dd8bd14a6a05691846b5ffa75a345a13a8e87b0. 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/QZMEM2236545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67c4cea7326c9ee9eb2775ec363696d3deb55d69a4192df75a59262e4938425. 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/QZNWS2277340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5270908ac2575c81b2ab61062330aab5101bcee91cbe519e22c0dce02353d5cc. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:40:20Z), 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/QZNWZ2258174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c3e849898d2184aaf2d53f34234aadbff50fe5d49a9f81e5a0ad9af98bb276. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZK6N2337859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7595a25af6686f799f36f61f4ad6fc1a160ef905ec622e20a526df2f36053510. 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/QZWFR2358040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdafdac45b6a0c8b7a22661eb634079bed448f95a8347996b067c0fa7f69a05. 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/QZDA62492867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1acfef74db18c37f48f29c742c26d34e038677f3042e9a4d9c8e78ff4da0fad8. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZMEQ2483722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d02df4958a229a7ddc488f160f0187e3ae553ac12cd90d55832ccddcb35bdf. 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/QZNWU2443083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d7f5cbe005ed4ef7ef4a0ae2e71844b91afa26644b24698294afca59277e43. 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/QZNWV2460272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5866e1287ed1e1fde9efd48f3386b21ba9c6c73d1722ee9790f23915ed89be. 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/QZNWV2460273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a3a1ee9e74316bca44c14243a7935311a45c7234fb8cfa851a793aff88af78. 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/QZNWV2460274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdaae1dbbd49126158cfed2ac259a0d0fa9e3e16913e7838cc6b54dc8f63c80. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZNWV2460275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf764a66398d11928d9b4aae683ab77d7742a271e736bccb6c76d1d982ad996. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T09:58:51Z), 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/QZNWV2460277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd997df91d5ee410d3c28b40c993989f884ff8b1815b4e5be3c2a881704eb0936. 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/QZNWV2460279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb617485b46a14f720f693ed755f17bec09d8162336eef75e4785c4d28a413179. 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/QZNWV2460280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f74eef0706bcfadaf8becdbb4c4ad6fc0b3baf263b1f7d1adaf390911a743e1. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZNWV2460282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3a66d37e34b9dc26ab84c6dedfe6871a767137244be1e8891b5634acadf61b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRX872469340.