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 0xb251f25a1f3fbfc4e42b342bd45e3b508bd29009da53063ee3a64d4751234d3a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/062f623a-7946-4541-851d-4addd8c53f1d.json and https://artists.proofprofile.net/proofs/artist/062f623a-7946-4541-851d-4addd8c53f1d.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 0x746ea5e3147cda2b895d16ad77e6de45e09eb4c53b9700d5bafe7e6f20c09d14. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZTB72347420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c529e81868b54f9a4e54505e1b01eb24577941e1c106d644824b96ceeb762b0. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZTB72347416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8d4772b432ccea4d5a4d8b25fdfd055d9b79ae4f844fb95ce808b2a0b9c451. 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/QZTB82306817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e3a9665580ced230bd6e64ce40b4b1d4fe47d9fcd94fc8f3e009e9becb2a5c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZTB82306428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6067fc73eb51cc93e279cacad36578b4344937b26e61edfe6fbe8c61ccbe5c52. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:23:15Z), 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/QZTB82306816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9d9ed1defab8f015adab9bb5226d12d6b5f691db11757a9dab9773e0dbacaa. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZTB82306815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20111ae703086f4bb356040b548f11163e55473936614847b30c77f91bb61bc2. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZTB82306814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126c00ed6e49df31984db54a7af1683edb0ecd2f9bf0e5ea18bd2981db621036. 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/QZTB82324039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13602aa76c8eadef18fc72a88467ff1e9129ce4b3424b9c17ffa999faedc4dd4. 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/QZTB82324040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f57b05fc88272dc3542aff51c8a71cfd8da095622aebb16024a1f5de860788. 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/QZTB82324036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e0027dd4bf20dcc20cf65a078178474a9ce4bed19393f8e9a59ee5fe77fa5d. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:45:58Z), 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/QZTB82324041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47c24a55a8c9337ea7bc6abea731f8467360d179e65939db011013ed8f782ed. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZTB82324038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4a6d3dfce1d98d8d58986c97ce6031b3828c3ec502cf8db72498c65975f34b. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZTB82323646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b3352f3bcd110915ac88b3a1a2c55e5965adbedac63b82898abc3aee79d452. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZTB82324037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d60183fb586312a07a2937d02657f4e039a8dd3b23d37c72b619334ee391e7f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZTB72320679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8491b52470c788f3e60161617edfead244b9445853c4aa84c956068857d4651. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:39:23Z), 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/QZTB72320683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d80ca3b7f2962d7418217aa4306986e862a9bb80652c024c7811f3395c7eb3e. 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/QZTB72310906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fd4e115ec1a5a4f286544b975080b996284a801aadf6591bc065f178a0a2a0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZTB72310858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ecf13b1386cf9f6ac6d91d5b4e668936e2643dec9edf0d85e96aec2e767965. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZTB72310909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5358c17965af8396d4c324c0d7c2054574cea1c20f49579f26475ae1851800. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZK6M2474274.