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 0x632d896aeadbf406f1d17bbbcd8de5c56a5ecb78678a63ad54c840cfd3e5ee95. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ca406189-7252-4e80-a9c4-ebc7e456b692.json and https://artists.proofprofile.net/proofs/artist/ca406189-7252-4e80-a9c4-ebc7e456b692.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 0x7288a6eba1e4a35cdf6b4192950b083195b00c6e54de53dab8698960fef6162c. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T19:59:15Z), 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/SEBAA2301601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129313903f123d891a4895b3eec7fe3b0efe170b2dd76e64ecb0436d77c79799. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:03:11Z), 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/SEBAA2301605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1912c1e2d37bfd362f0b47407d813606baa0def7c23851b8280bb0d30ec9c80. 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/SE3QR2402204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe167e5a9d9b7a9b5362d73163a049214abf7b93f87238c9c70d4bd70ebb1ff8f. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:13:41Z), 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/SE3QR2402205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ee8945238b7313697e2cc6eee878c9e73fb13983f28f71ae561297f77c0994. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SE3QR2402206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba53ce1f991c42b4f142902cf91c607175eb547a543b1932da09719b10a9c7f2. 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/SE3QR2402207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c4cd2338d0e252c8a82c17e9b498dc4a28a74a56ecec4728ec62fd52304324. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SE3QR2402209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854748195174f851a2103b0e6f1997377da467cf32ae7448211c9dabc8d19ff0. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:00:24Z), 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/SE3QR2402210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c9e4e9092dea6b5a9c154a645005bc9335dd9ebd48b691b709029cda5ca23e. 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/SE3QR2402211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29550a2135dd5672e8e873c6b2abfff2c1cafd69b841e461cc7c444555343a0. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:34:44Z), 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/SE3QR2402212.