Seamus Justin Heaney (13 April 1939 – 30 August 2013) was an Irish poet, playwright and translator. He received the 1995 Nobel Prize in Literature. Among his best-known works is Death of a Naturalist
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 0xfc39a4e43758f17156bafefa4fcb3847e4092eac9effa87949422542fbb1561b. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f61809e-d03c-4138-9924-93f139088378.json and https://artists.proofprofile.net/proofs/artist/9f61809e-d03c-4138-9924-93f139088378.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 0x66c14711a4f8564fae46303cd1df82be2ce94ea1c4e745ea2571221f98758310. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/IEAAQ1100125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682493d203e0d2d2f69c0a6e4be68e4182cf26b3db5dcacfa7dee6a11e2a8a8b. 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/IEAAQ1100126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4488553e212eb594b3cfd861660a9c2348fb96e4bca79cd483ae0fd64eb519d6. 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/IEAAQ1100127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f98ffbf8a542cf1b7a58bcf7705a06ff59fce1ae8bc45f2f10e80cddb122468. 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/IEAAQ1100128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a01906f906577f000464f755a880f8ac11b5b1effa4075e20323600fa17549d. 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/IEAAQ1100129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f6349c1292b0a8e221b2e85da6e50512c1352e8c80b27ce7ed145b9127f99d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/IEAAQ1100130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4671a80f5fd82ca2668950ccabb1004d30d9f0ef9e095a29159d8276976843e. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/IEAAQ1100131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d13cba62da6717b635e4b381d85cf96dff3125be2f593949a5d719cd846ff6. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/IEAAQ1100132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef48a076969c51adcee1d6faae07fa585edded5fe234bbb153886291969b62c7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/IEAAQ1100133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7523e177f805c41774a7be234cdf52af9dc16162c26211ea5d0feb190c0426c. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/IEAAQ1100134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e0c4479ce406ada348f13871acd2716e4f64e9422ae217faf49d5553feba17. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/IEAAQ1100135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7c0d8af254dcc9a492f1b2225defbe5a89331319082e09c786729652312bda. 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/IEAAQ1100136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd799209946465c68ac330d96b3fbd26ec6b1cc36fa1c19048ef20a38f0fef50b. 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/IEAAQ1100137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c402953f1431de247b3541be2576fc408b19388e4c9afe509e42b62717b6d2a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/IEAAQ1100138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35275471bd6d68558ba83af76c2972a6fbae3aab34451d1926877be0f992fb70. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/IEAAQ1100139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8462b852f214933d2916753193d4c72362ed418cbbe7b3397c5a87a526c3d499. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/IEAAQ1100140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd57a9ed4c99473bdc7a7e67543d94d648bca54084e2f546624a0f4f2ed69d9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/IEAAQ1100141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8f0530075747b2d57c4620a47079c875bdf55cacca52deb43f9027a02163d8. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/IEAAQ1100142.
The Humours Of Castlebernard / The Bank Of Turf
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0f5d71afe25fd6acfb8683c1a81a31f5ea819f868da6e306a695db737942c9. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/IEAAQ1100143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e15655fe60e5a143104b209da5064e824a8dbd5ed65dfeeb370692931ebfc8. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/IEAAQ1100144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31808edf386c302dcb3965805105d4c51d75e81c022a02b7aef087e1235c10b1. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/IEAAQ1100145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b07e832140ceae8083a9c8e36d1cdaea4d0e0c48ffd4358551b9e5b9682fc4. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/IEAAQ1100146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25126c8f963409fc9932ab1a8f3b0203397d1f1d1c17c820aa2f56817e9d98e0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/IEAAQ1100147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c4ce047fd5da978d1d8d4c9b80e6327cad94c0a384c3be60d43713712f01fc. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/IEAAQ1100148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9684db7279749981b8ff87393631e5743314980f611e5fd04ab5423069236d52. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/IEAAQ1100149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c1061a9a7be31c2752afd87ee9668c39ae257175f4ca7f4e901a2ab83e8cc3. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/IEAAQ1100150.
Garret Barry's Reel / Seán Reid's Favourite
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f6e5cac9ebb5e63776e8a4f047ae46ad51f09cfe25b742414cad0fd8c90634. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/IEAAQ1100151.
For the Birds: The Birdsong Project, Vol. V
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f14b229c9c409fec3b48a82767ebfbfd2f152767f68e473e264805a815814d. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QMBZ92249088.