Valdimar is a given name in Icelandic. Notable persons with that name include: First name Valdimar Bergstað (born 1989), Icelandic equestrian Valdimar Briem (1848–1930), Icelandic poet, prelate, hymn
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 0x38af796d18dda7b414cb7d53873f5995457f37037a8302c30db6015abc0912c1. 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/3a353168-1f29-4467-9dc9-61a324182fcf.json and https://artists.proofprofile.net/proofs/artist/3a353168-1f29-4467-9dc9-61a324182fcf.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 0x47626dea66da4028d38f6a519d11d2246e9bb6ec838a10826814d9a6ba543331. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/ISG111000602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12751e5b1566e62d45dee99cbfe4cb9896dd01a4fa3e67afc69d3475ab334bfe. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/ISG111000604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41cf179f9f72862d4401eadc37bb81619476b536cd2e83b7926d14d2122933c. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/ISG111000605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1177bda353c0f5b9290409ad0272b15cda82fe57e3ababde635ed97bf4ab2248. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/ISG111000607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eed44e1c71276d0b9fbef5686d99955eeacf89f6275015520fc14b4e6d4798a. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/ISG111000609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf565fafcfd36e52f62e7644b2a44860943df191c00e8586a74eb52fad8d2374a. Chain 2 (Bitcoin): anchored in block 958676 (2026-07-19T05:43:13Z), 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/ISV441206001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe52a9694d2f4c06ced07106dc90d572b22ef5a6168f3f1790e7a95acdc2130c. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T07:36:28Z), 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/ISV441206002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33268fc0be1401b16c0d6b2f2a2b791fe254d7612e31eeef409b1384c213d080. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/ISV441206005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589b749e08618985d0348a0d61477c267f181d1825599c668be242b61de649e5. 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/ISV441206006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d067adbf758ca178b4fb6b2ee4899383f3f957f7ee72b1f1bf8bab50a91200c. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/ISV441206012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583591102c3f1e131c16240650842df7fa84bfc0ee9cd005bcd1ebb5d2add1bc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ISV441423904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc20b07ca0dd4eca9e9ce10aeaf783e7b8d6545238a38485796435173753227. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/ISV441423906.
Síminn+Spotify Session (Live from Vatnagarðar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f468f0f8dca94ccf461e1cd6da220f2d411194b01beb5f4326be88469d35d7. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/ISV441512602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d7fbd92981a3516d951dd8f2317b9cb7dbe62ee8885edff6d38b58db8f5c82. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ISV441846902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5b614fae7a29cb645a9953353456dfa0ddc9898bd6ffacccb74d7eb38bc3b6. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/ISV441846905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944028b1cd49ac0d561156f733b6b788d241d15a44a5e746be2b646a96992896. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ISV441846906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293f103d730829d96d1fe03d1903bbd66ded0a05d7eb07a080cecd50174331e2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ISV441846908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e79487df946922ad9f5490c2c8499f9302dc59ba8572c57cdfcfdabdb7a83c0. 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/ISV441809101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5230d7dffd416b25e1c6ba79a66dc7dff02df5001a9ca2c7315e3a22074d7f2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ISV441423907.