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 0x2e24b581cd72a13a36379038fce1b044d584491becb4b7717846fd3ab8824f43. 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/237409c5-066e-40f6-b573-92e3a8db5104.json and https://artists.proofprofile.net/proofs/artist/237409c5-066e-40f6-b573-92e3a8db5104.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 0x4eed254d814877fca7bacd507062ed47d65b70f9dc837f72a24e7c416dac9dce. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/AEA141505236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb5d9fd69318d213597c765ff98fd5b7645523a0fa06b70de20bf494f8459ce. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/AEA141700310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bc0f92f1fd157ad73df5b3f0dcfc1e04377a6d81e52c7b70257c1057707fbc. 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/AEA141700312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22c4184569762b96607af2b5bfa0f8fcbde10bae9360a0df8d70bdb0b1a5b46. 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/AEA141702231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e019f0ff148b381234a7698cf6cb14978b7b868a82bd1d493a2bc0acc61b4a5. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/AEA141702232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e01f8edd4192e4838164c1250a4f42968bac2b447fe90eb7502ed0de5c7a8c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/AEA141702233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69ef8783a44a92fcca7922847099875f6d800de087c432ca6f74711bec26447. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/AEA141702235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0d6ab78614daf609ef46c482e91305f9115128a62103a299dba0065dffceda. 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/AEA141702238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85802134dcdf942b15f665a0806477312f9973ae6e8618d791001a38c476f042. 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/AEA141707364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e00609f2139b220c9da31df102b9408235f04092f9b3837107e6b89bc29b55. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/AEA141707368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606baa218be2a319264179b5efb6401557917253b7aa0fdd49f1c43e0174b682. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/AEA141707380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877649b2d6076065221d40d4585ca2fe9732fcd8b70be07958d6b360a8973338. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AEA141800634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1fe6eaf816ad2d4be5ee1f804e402522e2392ddd9338ab854f9969ee1e0797. 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/AEA141803916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d6b66904af10b9d182a168e7e5c13f5a4be9c065cf06ea490a14fa44b2abd2. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/AEA141803917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03219c28ff7cef9175054fbccffa21115e4e60710398025c4dc71cce060efbf. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:32:15Z), 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/AEA141803918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0ff78119d2997eb5b249bab508993ed181789dc01b8fb9445920f53e2601e5. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/AEA141803920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f15bdbc30c532cbe2c15fd07788255bc7d3e3e04980b6b563d2b87ba1fc301. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/AEA141804032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe410e3a1c3900ee749e71f670bcafec8e294c6c2c58d10e57cb4b58fd10b5148. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/AEA141804037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbdbdae55c161a44aac44244e7b7b097481537e95fe397858e7ff365428ce24. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/AEA141804118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1119761bc72e0991877f21ad164c69e6418dd13cba6ed63a85f44807a94df5a0. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/AEA141804120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a19c9c8fdc41617ed6accd96a4a0402c120ac0f586c79bd15c786fb33afbe7. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/AEA141804121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31983429919b93bc89abf0e52d5ceb59d2d5148f91801aa8382b8bfd3f74fdf8. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:52:29Z), 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/AEA141805688.