Derek Ryan may refer to: Derek Ryan (ice hockey) (born 1986), American ice hockey player Derek Ryan (squash player) (born 1969), Republic of Ireland squash player Derek Ryan (singer), Irish country s
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880fb25f1a02405ab88f9598d87d64402a4c7b55b9749b6ad7f81443c9ddeb76. 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/bcd7ea93-296f-43d3-8790-02646806ff8b.json and https://artists.proofprofile.net/proofs/artist/bcd7ea93-296f-43d3-8790-02646806ff8b.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b3b3747b1e01c18dfb0875b7ef65e529f5b760e0fb2d523629cd4cf2aee837. 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/GB52E2238101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8936b4c45035bb4ef407241746e29030fe1541188040a90757ade79eb4d2d6. 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/GB52E2037202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd398b0401d2ef9a927df0595252e8e894e7781e93fd5b17057069c270727ce42. 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/GB52E2037201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd6617bb45f22266e25483eabdd4f31314489a2a71a71d427ad5f94e1660459. 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/GB52E2037203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdbbfd7c4cd63c86c187bb558a0acae10a1a800be5cdf2fb34e236097ff8eff. 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/GB52E2037204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e9ca0d49e178933002c5bfc6b32bc9168c81ef3c830367bc27fb93ed1692f0. 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/GB52E2137205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9200ec0011817904cec2c5a06be02051e8d67351f12c5e662499dddf9c9d706. 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/GB52E2037206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49628095d6f11ffa98edb904e857eb0b493483ea6efaea90f2c4f1e6b730e89. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/GB52E2037207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8f4ee9f7a4494a1b9855620fa1320340df9f25758a28cae2c7ebb6b0da197d. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/GB52E2037208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03573de479e758e956a2003337bbe01262767863ee515a10196f6761b144482e. 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/GB52E2037209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2af0ec7dd7427808dd3d141d5f318eda777c78aaccdfebbabe5ed03df497dc9. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/GB52E2037210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf0b81253dbfb7846c667c258f6b28782ba773dc491f8db574f4ae75850dbc1. 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/GB52E1936903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3a59601d11c8a0ba95987110f8df6e41c8f0045ae9463f5d6f5183ba02c734. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GB52E2037212.