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 0xaf10e5198157ba73f38cdf7e1f4f6cead04bd35eefeb7cb372ca7b095c450284. 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/7267a42c-d347-4cad-83ac-3b46457b87d7.json and https://artists.proofprofile.net/proofs/artist/7267a42c-d347-4cad-83ac-3b46457b87d7.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 0xa4021775d7acc1b3413c49f2491c385b8cfa980c2185f50377d51abbd5e32e31. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM24S2204523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb771b5545ff58cc3daa143564d436131924e76d43418736edcd1ad037c7b90f. 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/QM24S2204627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1cbbb9895f8c50b0f4652d28ae20eed5bfe1f16f3cfaff222ff43243f573ea. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM24S2204039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e86eea2f7981f937120787a93cd76f9144c9da3c9a7a87d61b8a91a0a62084. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKPL1953540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f35951c57196b0144b12337c8472a64c8d5316b62c6e36ddf187653a62ce891. 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/SE5VF1904966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd8d885e61893c09205d76854154000910ae4839b9ca58861e4dceeea7f4be8. 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/GBKPL1953541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfebcd6c6e5c88876302d902f17d9ae430b5dbc443d40e63c9807116e33ec90d0. 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/SE5VF1801417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8098fc48192a938487c8f474c55b1535de652ca95ee0a989950411fdb783a5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM24S1705978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf291b7bf8ca3da8e5dea83213c71d5dd78f9000b2000b9c3d5e419d337b33657. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM24S1705979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a34a7e272a5ed6f15be1d8c130a4eeef16fdfa6f8efa781c0a5a3331e2c3576. 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/QM24S2402947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eaaccdde681d79cf4787a6ce42d5fa383a6230cfc509ec174af39a2eecf42b6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM24S2006961.
What Were We Doing If We Weren't In Love?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa963e2ab4e2f361db1f5badecdf0f5fa02a9b231266ee8f74b534b25711a080b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBKPL1980151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea92bbae79f3ab4859c6eea50cf8a99ddd1bd91dc778c4e9be28f1587d9aa2ec. 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/SE5VF1800651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0489cc11926a84320edd9822dbc028b3ab8a2452c5f2cf21012bcedcfa9f02. 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/SE3OH1615641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd1df12817c0376e548b4f53c9cca7678ffeac1f62e26592d332ede4abd1e5a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE3OH1604953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853d0b644afcb7b8b676611812523bda93ff99a2601259917923f19c215c6339. 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/SE3OH1604952.