Tollef is a given name. Notable people with the name include: Tollef Kilde (1853–1947), Norwegian politician Tollef Landsverk (1920–1988), Norwegian judge and civil servant Tollef Edward Moen (187
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 0x1f5be826b6f5bf7b8a6af772ead15a4e87b7b398bece612bf25a841792e1f752. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/194fe130-6168-4fde-9e4e-27883784e81b.json and https://artists.proofprofile.net/proofs/artist/194fe130-6168-4fde-9e4e-27883784e81b.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 0x4a1706978374c52ec8cd786b48b580664895e2a9214e19d400c0c59cf374adf0. 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/NL1ZN2302584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f80d6359aaf2bda4a2c2226cf74b4ea831c3d33906df33cdd524ca0ff0148e2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TX2543758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c64efbfee973fe80702882170d6e5fc64aa2197eab41a4196d0a2195412c3b9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMDA62433668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8affee7bb28fdf00db42849ae6a524f323268052d2c90b3d7557c1491f69b3e6. 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/QMBZ92464830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be5fe385389ec6617b3b7e2ad639aa2e7a4916348e2d8bf2f38e72cc6dcbc65. 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/QMDA62433576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c64efbfee973fe80702882170d6e5fc64aa2197eab41a4196d0a2195412c3b9. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QMDA62433668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be5fe385389ec6617b3b7e2ad639aa2e7a4916348e2d8bf2f38e72cc6dcbc65. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMDA62433576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3c5ea59ad607831d84675aaad9d71056d63921db7ca544687f9bbd0712b190. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMDA62433449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8affee7bb28fdf00db42849ae6a524f323268052d2c90b3d7557c1491f69b3e6. 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/QMBZ92464830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3219413e1e268bbeb2fcc8c6239b36996d0945e245b958c90d2ac551aa18b436. 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/NL8RL2430841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93c7d18a5f5ebda538c190e09de990ae9e09508d37057fe0beb44a19a73a4d7. 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/QZ25C1700656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea9676380a5b85f2475fdf1fcd3f563d7096062cac8c9d5978d71e28c8dc0e3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GB2LD2320354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91519c93780187b46061b87020ff01154a49d866049a3fd15aed28dfc00b34f. 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/GBBPP2300153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf256e17008071afe65ce77a37da0a0d3cee61869a66d6e03fe6454583b0ef439. 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/GBBPP2300155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027d16f0afa6958dab9bc35f53b1f37ec0c2e3c7798de07e12682ec2acfb2c49. 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/GBBPP2300154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf256e17008071afe65ce77a37da0a0d3cee61869a66d6e03fe6454583b0ef439. 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/GBBPP2300155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5367e0b8e06a5384a2e0be91552352b2f28dff18e54c42e591ee35f3d8896a50. 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/GBBPP2365119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba2367e03c38bb8cf2ac389ac13e2e697579d88cb79edc8b527a724180670e0. 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/QZWDD2272110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc68fb0325c2c9d5d8c40eae556732e1f8bc884edb4a9c7c4021ee9db503054. 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/GX8KD2263536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546d77e4496233aea1fcc6870db9bd0cb508b9d8b5af02e30e423df902c2036d. 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/GB2LD2210241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e489a335f7a39f23fc868d2831009b2965aef9c7e7af9415ab92fbd5553c3ee. 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/NL1ZN2201696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3967af1026148e842f4963c0d19d891b528deb763cdc3a9ac65be2c238eb3e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHNB2268634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18162439b8d2230d06fadc5dec67c54dcaaa502d2d81c2d4f2e9cb1528d522ed. 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/NL1ZN2201706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df367f9feb4ad6c806db9dfeef30dcd2e2e38e2d807fc148cfa5bd06923b12d. 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/GB2LD2110400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ca819f6e0479db532f2fe9bc4d1f2d724dc5bb710d8594e1aeb7d199a58c57. 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/GB2LD2110352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7b5e54e44ddaa9edefffa89ff5f2251002afc7fb63674a895c2fd8fd653834. 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/GB2LD2110304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6954ec2fd3892400e4babbed570cb48a0d3a5033ac3472cc13a9b7566b96687. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NL1ZN2001136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb13f636e312762e5426a3ef94d59742602e38f678c18ab2a3063068e461c86. 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/QZDA62121791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf209d7a6019efe81d697021c8abdaf5058c9a2b5e0b521b4c866cddb8878979e. 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/NL1ZN2000147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06372e068298d1699d9d263b54ee0a02088348a5c0a5fb9e17619c43e9a3e942. 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/QZK6N2047437.