Scott "Metter" Metcalfe (January 6, 1967 – June 5, 2025) was a Canadian professional ice hockey player, who played 19 games over four seasons in the National Hockey League (NHL). The majority of his c
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 0x87a3ba8b5d2000d0d32d5fc7f8d23f72934f6933a835e6c6faeba0eedd23115c. Chain 2 (Bitcoin): anchored in block 953670 (2026-06-14T18:07:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/59db8c4d-a12a-47ae-bde2-3b10643bbf1f.json and https://artists.proofprofile.net/proofs/artist/59db8c4d-a12a-47ae-bde2-3b10643bbf1f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Music from the Peterhouse Partbooks, Vol. 1
The Lost Music of Canterbury: Music from the Peterhouse Partbooks
Johannes Ockeghem: Complete Songs, Vol. 1
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 0x11b9746faff6099930c616b6083957ae4a34130212c422445a199b89f1d76793. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/US9Z81901001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff7c21a5a5ee7e7c36c921d00ace21c94c9964639e363db4b43dc7447917d56. 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/US9Z81901002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c564db9fc2608dd677fc4187a7887b181d413dcc30c7f18249fb36ca8713045. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/US9Z81901003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34404550508b345b7783545072fe1087cefda11d7c24985d2472b0fcbf387008. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/US9Z81901004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48877c8b7ce54ce06b8f110a0aec32b4f18ecb80cbdad3ff76ff6c0fa0f27e9. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/US9Z81901005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7cbbb06cb4bfae7d292324dc95da8c08bb6bf06c720d53942cf1d3343d88b5. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/US9Z81901006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83728a3e67a5d0fc5a1aa479f1a679752fb3ea3b085788c003e3f02c9a4e0272. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/US9Z81901007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd005207ccc4961e61cc3c3ec04efce298f0c720632429dd80bc41f2b0fd37557. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/US9Z81901008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f72be6abb94a68110fbe5a4a6f483c0971206bb3ca391f88437aa64378bbd3. Chain 2 (Bitcoin): anchored in block 960430 (2026-07-31T16:09:41Z), 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/US9Z81901009.
Music from the Peterhouse Partbooks, Vol. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54f60add93eae7fc45899b2482f5a68c9d03d892dbcf680a828d712ad33f048. 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/US9Z81700701.
Gaude virgo salutata / Gaude virgo singularis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fd320913aac48a133214ea379ff70fca0ecc8472f8bca27c3a93ba3c8ab9a1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US9Z81500603.
There is no rose of swych vertu [Trinity roll, England, 15th Century]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8d57dd39efb0113d47dd4f72fd98d86e2072c169be37bc0a4cc380d44cd67d. 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/US9Z81500606.
Music from the Peterhouse Partbooks, Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa05d47ac42737e465f854168788fecbe57cd6716d40ad7278b4479295329ae0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US9Z81500501.
Music from the Peterhouse Partbooks, Vol. 3
Music from the Peterhouse Partbooks, Vol. 2
Apostolo glorioso / Cum tua doctrina / Andreas Christi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101adaa3027832e34c1ca762b76bdc8b34b127e34d7d681e7df0452f156b6a13. 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/US9Z81100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b1c63f8848ac1b6c851de44d05b259e80caef1e913422e1d85ae7cb7b36be0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US9Z81100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86998a118005d8e313b9d815aae44c35e104f071372e1b379e536a8acd9ef25f. 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/US9Z81100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7d6e3b389c139403b652a37ff1ea8dcbe91b2040a76d5b86ab0501ceb23245. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US9Z81100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd753be073438be58a425662a58a43540021ba3a9ee51f101ab9e95f6c8d7ecc1. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/US9Z81100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab3a324daea942cb333ffc5c9ee3d0ee96d9bf945f308b9d43035a20bcbea17. 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/US9Z81100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20677a45466a0cdc285c9b01cec6f4412e5db465678f0f0dc769b8da39a0393. 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/US9Z81100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f7cb5675071ec8f4e25953c0d183ab7a7d0f803d6306a8681321d51c881b5d. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/US9Z81100108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3833122a615b8f1ba2e1a8e00a404721d3b1dccf9374c1de0229708e5f6bc64. 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/US9Z81100109.
Permanent vierge / Pulchras es / Sancta Dei genitrix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8966407dce9f9258741396d3f17fe63b37e6545f8d6d7788a1690c682d4ef2b4. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/US9Z81100110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305acfd563a751eb80644283236bcb90a106410000028223c50f5627768c2558. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/US9Z81100111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa849a8eafb39becef7950e5e6c122c4c152b57b9b2b655594f401df0cb9d367a. 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/US9Z81100112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5228d1e5311dbc2440cd638f13076e3fff4816b9debb11b192f508d43ab2be57. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/US9Z81100113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16bf8a70a96807b290a8117eba1a10f411fe150c26e8e79af696ea0efef9d0dd. 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/US9Z81100114.
Par droit je puis bien complaindre et gemir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf36b0d1935ed0b4d7d5b4a2714a250822404c9016c141cb60612778d86dc12. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/US9Z81100115.
Ecclesie militantis / Sanctorum arbitrio / Bella canunt gentes / Gabriel / Ecce nomen Domini
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236d76264a0136b0e006b828b33805d35a9b6cd100effc61d3bb7af3def6312f. 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/US9Z81100116.
Bach, J.S.: Oboe D'Amore Concertos / Sacred Arias
John Taverner: Dum transisset sabbatum (II) - Single
Guillaume de Machaut: Remede de Fortune (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022f1beee0084410fe6c073acd6ad8b12cf38e11d6f14da717b9f0c53da57c42. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USA221200566.
Il Giardino Corrupto: 17th-Century German Chamber Music