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 0xb9201ea5a05c4614254f3810cc17ee60b57ed7f6d7ad4c7893e957f4908e2a82. 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/3552a1a6-e29b-4ba3-a58d-8e7fb667c8d7.json and https://artists.proofprofile.net/proofs/artist/3552a1a6-e29b-4ba3-a58d-8e7fb667c8d7.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 0xac83c69b6adf5d3898ab488a3b385b2f7e9cc351ef3f1f63c0d21b44d6523137. 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/DEU671701375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3632c5cf42491c03f56d8d057dd88dc19dfb69300c0a4083341848cf861e729f. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/GBEXH2000145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3632c5cf42491c03f56d8d057dd88dc19dfb69300c0a4083341848cf861e729f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBEXH2000145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee328da52860e4425fc639c70485fe2a89d299f895460afef7046f4ca662e9e2. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/GBEXH2000147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7dac93b9b2781cc4c43945944b52eb63335fb81203a41bacea6f2094ad3c346. 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/GBEXH2000256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7dac93b9b2781cc4c43945944b52eb63335fb81203a41bacea6f2094ad3c346. 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/GBEXH2000256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7dac93b9b2781cc4c43945944b52eb63335fb81203a41bacea6f2094ad3c346. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBEXH2000256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7dac93b9b2781cc4c43945944b52eb63335fb81203a41bacea6f2094ad3c346. 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/GBEXH2000256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48e0c6d63d0b6b31a244972a35a96420d2901a8428eed53fffb2acfe0028977. 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/GBEXH2000261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37b00503ec1f0ca495f3ef6a96d3f6d9a6569931f2a2e52a3586a7381c07571. 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/GBBTF2400133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c7801b4bd3d3ac57d31b34b3d5a892e8268bb03961105aab484fff46ffef2e. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-17T08:44:45Z), 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/GBBTF2400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1da590b1eec2ef5671dfde24b1ba7c78fe29aa9129d5f3bb3bc2bf5a0b68f6a. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/GBBTF2400134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c7801b4bd3d3ac57d31b34b3d5a892e8268bb03961105aab484fff46ffef2e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:10:23Z), 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/GBBTF2400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9789a08743be5acacf1e9c0541b45d3e39a4b0fee288ae06442efa4b10446629. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:49:34Z), 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/GBBTF2400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e23b3925081b007af5c41421e5fc5818d80a80d80475d2791fdb5ba103f6ab. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GBBTF2400137.
Hidden Angel - Hackney Road Studio Session
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8c159758ad0bf9fccf1b9e2976d41a242e5e610374b9691350d0fe678010f1. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBCFB2300318.