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 0x1732ddb5ccf3e05953179d304a404844a1c7a4bba36699a1e7ea6b1f75cb788c. 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/661f0926-bd73-44e4-b989-6ecff120cf41.json and https://artists.proofprofile.net/proofs/artist/661f0926-bd73-44e4-b989-6ecff120cf41.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 0x00e017302046b31c17b4067c09a219c2db421f8901551c9511a1904137e12c62. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/QZTAT2112240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd532fed5c9492802f445b1043d332b37e315ac2390de4b1a559b6d6cf1c316c. 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/QZTAT2113641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cc623a234d7929a84a83910f2e3eccc081c9e70dc34c83d584ad3401eb7bd1. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:30:19Z), 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/QZHN42246420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1391f2f90cfb40ad5b110373d815c20bae66ff4b9ece574b18442fe7b7f4d6de. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZHN52295221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156f6d9d3d2b72fb42c2dbe3001c54a94d6684cb4e3cf599e23efaf1cebd2df6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNWV2236681.
Since I was a boy (Glasgow rangers Chant)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be4429e6045e1963b554e2c34999dfcd088113c0efdb8542f025a775fff1931. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZFZ62387362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1eecd01607cd6a90d819a08f6a7b60943bcc6a2ff0baa2c1371c62364aeb7b8. Chain 2 (Bitcoin): anchored in block 957647 (2026-07-12T03:57:41Z), 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/QZFZ62389010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96a1774ad7b4d215ee77d6e4e06d24b684107ddcbc1be8b645bd8ecb301cafe. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:44:11Z), 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/QZRP52320353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22977f9978dcc182d11a4f41ae8e0db426b6afd1dfc320b2dc962e7376005e58. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QT3EZ2408638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fa545ddb508f1b9b6610378dd57dd90b73243f33a469d47ce617e7138454f1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT3F32500020.