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 0xd855d993082988e717f206673aed9a68ca5a39b54f3f33cefc7caade1edfe829. 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/d361fe06-bbcf-4747-940e-4b24ac54eff8.json and https://artists.proofprofile.net/proofs/artist/d361fe06-bbcf-4747-940e-4b24ac54eff8.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 0x1d493d0ec65dc9ad4b4ed250a391abf7309027bcd77587d565b1d39b5f9d1a76. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/GBLPF6798901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fad2fc8cfc961fd38895731b9794814b9557235559c5466cacd701676f08f6d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBLPF6798903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5301cbfacb4a685991fa4ae3bb9492e43bdc0beb85001619d46e86f6e23053ed. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/SEVLV8900310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805da66ddb6efe62b0f5995982ef02edc7df4d1c519cca0003c0dbac0eede7ff. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/SEVLV8900210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2df08625031674163e2ec35dd4110fccc1564c324810debe4bc3a7873f7629. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:07:05Z), 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/SEVLV8900304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048859801429490254ab21f3a3f3b3a080c3cf4200954690e0784301deac77f2. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/SEVLV8900311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a9f34b76795f226985c21a395ffd332ecde888a9a312de72429ca4dbf2742e. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/SEVLV8900203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8c3447fd5f57c3bbd1e95c173547dd619a1689f72ff06e033df5a1f6fd9390. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/SEVLV8900205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0feb5782994d88185c7d7daab3664fdbe438fd22de65f7ec57b360c53a147d31. 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/SEVLV9500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1874a18770fa3e6c9400a33c61c6661463d7b3e33f6d87e5893b613437a5dc10. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/SEVLV9600102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba0f6099107e682275da66af80190cf26e0fe38344a2943456b72082234edc7. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:01:44Z), 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/SEVLV0200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1b60d69249e0d6a14009885870e38089acb008c2e1256b933f00298b039008. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/SEVLV0200107.
Junkers Skafferi Vol. 4: Nilsson's Ängelholm, 21 april 2012
Junkers Skafferi Vol. 9: Backstagebaren Linköping, 8 september 2012
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4aae94d756b49c46f77ca75c11dd1a21a527dbfd1ff2d8eeccad16658f9f7c0. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/SEVLV1201111.
Junkers Skafferi Vol. 12: Kackelstugan Öland, 31 juli 2013
Junkers Skafferi, Vol. 12: Kackelstugan Öland, 31 Juli 2013
Junkers Skafferi Vol. 13: Akkurat Stockholm 26 oktober 2014
Junkers Skafferi, Vol. 13: Akkurat Stockholm 26 oktober 2014
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615ee4f38c5e57d9f5a8f2efda5338f250ae5b64309b564f0064d62941408373. 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/SEVLV1600101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b004dad3b8ea89472d37717269f2d1c89dfe1ab630bbe2137c20c62990e4faa. 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/SEVLV1600104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a2d16611e2d53a7534c8c7eba672fd138d4fdb19838bb5fe687d9601758631. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:05:54Z), 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/SEXHE2000505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc25d001c432740f62a9ec98669dade4b2d2b174b35692cad0d162ab69512ce. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SEXHE2000501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95d841c96aea746902551519d5a7dbf9c4c6665657f52f6d2112046bf479eeb. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/SEXHE2500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d157d4c9bcfb0a14d19dbf4cd87cb0e363ff36535b1b27d2f152549f86092fc. 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/SEXHE2500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed76abb408d139679fb1e0e118d3afa9ea78eb9409be648694de09f705fbd6c0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SEXHE2500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95d841c96aea746902551519d5a7dbf9c4c6665657f52f6d2112046bf479eeb. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:08:42Z), 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/SEXHE2500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95d841c96aea746902551519d5a7dbf9c4c6665657f52f6d2112046bf479eeb. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/SEXHE2500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed76abb408d139679fb1e0e118d3afa9ea78eb9409be648694de09f705fbd6c0. 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/SEXHE2500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d157d4c9bcfb0a14d19dbf4cd87cb0e363ff36535b1b27d2f152549f86092fc. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SEXHE2500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed397bda65ab7ef59fb8815a1ae9e7a86a9cec93839557a6a71df49c37b2c08b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SEXHE2500104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4b9a9a1d27cef2479c03ba418ce9529077800cd6db5f3281bb61fe79d7812f. 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/SEXHE2500105.