Erik Ruben Lundin (2 July 1904Passengers of the Piriápolis – 5 December 1988) was a Swedish chess master. In 1928, he won in Oslo, took 5th in Helsingborg, tied for 2nd-3rd in Stockholm (Quadrangular
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 0xe8abebc6ece681741a52fbcaeaaa3973c0eabe5af974d9706b00d0022ebf19b1. 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/9420ac42-3182-4605-a54f-31aef8ccdb41.json and https://artists.proofprofile.net/proofs/artist/9420ac42-3182-4605-a54f-31aef8ccdb41.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 0xfc7b74ee6f2b11d768e41904be7606107e0e0d4c40938d3d3c11a9d741804e39. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SEYWK1500802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f650e9f4097f84b0113b058c76ff094249987f4ebb64ad2579a90120ff668c1. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/SEYWK1500803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdbca78efcddd787f3bf839b7b118c20404b4e5886c1195506836a3369caed1. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/SEYWK1600303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cdbe528e61a8dc8abc8559b322d0764d5f03ee28a43f92d86f0c01978cba60. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SEYWK1600305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1b1c6f048cb61b23c0802fcbaa9d0dd89b3eaacb2064f17e324810fd0cb664. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/SEYWK1700801.
Jills Veranda (Livemusiken från Säsong 3)
I Won't Let Go - Livemusiken från Säsong 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2843ea3ede21281870bfec685f4187aabdbcd16ff45b2aabbac94456d1c4f43a. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/SEUM71701062.
Live Forever - Livemusiken från Säsong 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8880e8e9c7945fd9a8bd3debd4a5e36f4819cae549b38835a6b3486325fa9da4. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/SEUM71701061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb452fb512d97e8f16774c0d150ae2966a68a0d629d6ca20bb7d2fb3006ac4a9e. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBKPL1942016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbf08cfc1a1e4b6c7d3cd3f38215ad0fa1a90fd3108d6358d3b210900337375. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBKPL1942017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a459fda5cedd607d956a4b18764a59247dca684f15b25a709c460960ddee15. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GBKPL1942019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119000368ae09098c7c77e54e7a09542d098b89bdfda07cb01e3c62731b07976. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMDA62427192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea24151fed211d75179ed175e4f3119caa2cb1c0a342839b27ae0d853bda6305. 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/QMDA72479102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119000368ae09098c7c77e54e7a09542d098b89bdfda07cb01e3c62731b07976. 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/QMDA62427192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fea20a1e4d01984eb97334d4614c65256cbce3b9613d66fa90ad8182e323c6. 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/QM6P42469139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd35c53f39549cc0246ee813e19e23720790b28198c3e98e703cf74806c11bd. 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/QMDA72479103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f1d01d180d5105e5815fbab669b5a997624fca0a005af1696a093dda84a652. 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/QMDA72479105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e3d72d90ba217c9cb708ab3bfec03dbfbabf1fd49918d62c0f80e9e1cf3806. 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/QMDA72479106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa467c5435c2691dcd0286813157349928a8a9e78815899625cb8209bb0e66edc. 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/QMDA72479104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8b818dfaf387cbc751c776924f466906446b7bdf0d94c1c8021091444c26de. 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/QMDA72479107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd33b28cd09aca9ceae4ee6d94c8b0810ee55eafe71b5d83374feb647f45169. 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/SE4OX1600510.
Sulten (feat. Michel Dida & Erik Lundin) - RMH Remix
Sulten (feat. Michel Dida & Erik Lundin) [RMH Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5881da6c13affbfe2ac2cef7bce3d0d0fea459b06a541857fce1fb3f409826. 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/NOAGW1500824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c12c6b55b02ee80aa544be36c84976a5e8053dbb54b5238b4a6cb7ac2d3fc9a. 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/GBKPL2035104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4958ed1b1ef70f745d7115a68f5cbee0db0b2c7a445bbd9cebd8d5270735f96b. 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/SEBGA1902208.
Ljuset i tunneln (feat. Erik Lundin, S.T Da Gambian Dream & Lorentz) - The Smiling Coast Remix
Ljuset i tunneln (feat. Erik Lundin, S.T Da Gambian Dream & Lorentz) [The Smiling Coast Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7fc89fd60080a7a8403b5b099e74551f3b8ce33ab781cd7fd0aa9ab9b58942. 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/SEBGA1802001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6796d720665bc19d8bd49832af345c76627f69b59f892971c922335f0a21164. 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/SE4OX1601001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74965c6c3e22bc247cf1927922b82000c3e0035a6912d67e73999def4dde11f. 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/SE4OX1601002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96f2af3192050fa399e823eb07921eb2a1992315571496a38513f9d2aee438b. 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/SE5SD2400401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf149375292d8bc255ab6479ecb761f17cbefb2ff2acf9150f10e1a349f17950. 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/SE6I31930896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96f2af3192050fa399e823eb07921eb2a1992315571496a38513f9d2aee438b. 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/SE5SD2400401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139aced5da40c991f083927f8f1cc39ce0019333fb1d2c7a8d4a4c5da142fd49. 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/SE7IE2400305.