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 0xf6c88cd3644e881ccdbdc1fbff5d320f8ecfe9f8b8ce65698176c28b70b89c88. 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/8dad6606-1154-4289-a3ba-687133680dd2.json and https://artists.proofprofile.net/proofs/artist/8dad6606-1154-4289-a3ba-687133680dd2.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 0x3302ad6bd11e3834b9b94d52d439b7c127deea0985c93362b25cb9627d59f5d9. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/SE3OW1300687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb719da85ba38f40711e3c116c68a70795c7de3d2832189a167e3a173fd74fbe. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SEAZC9326040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f5ceedcb030be59d586b6ed7d2a376f535ec4f6f73c7e2edba1f68a0291dd2. 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/SEBIA0500071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691405381f571d40359f1afb1564b6787e0e9507f22511817a5b708285a5dc35. 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/SEBIA0500072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc21fec1ae52335d56fd42f0549af932d5e5edaa140d65d066cdcdef03a4288. 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/SEBIA0128010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadf21a6e92ec135e75cc405dc095dad6c8edcd300ec80afabee65e8ca0dd0f4. 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/SEBIA0500073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ba13cc01f6d2335d7689ebf6133c9630f8dee7fa64a2f3cb370f9895ba830c. 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/SEBIA0500074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a6fbf28e0d560cdb1e132b5f4c88c3c6b02fe8794c89b9d553dc7695b9358b. 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/SEBIA0400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe802ed9eac529bf4d5ed8dd777e5beebdeb66e9471d48677c01f1d4cc1f6373c. 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/SEBIA0500075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba8d292a4198854bcb6dc8ddc6491c53dccba56a12d2bdd820cb9b32ac0b71a. 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/SEBIA0500076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f00a7c1d1eca2f20394c0cb7606c30d22ed7eb877daf90519df82d5f7b7db46. 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/SEBIA0500077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1076274216e5d06c27e9c556952d29f9925221ec1335edd8ea44fa50b125f29. 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/SEBIA0400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e8b23f5bcfd3e262fff2321c57e00bac5d3da47d7601593783904524b311fa. 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/SEBIA0400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4a20d938c190cc2c1e1a2a2501e669c237d7541d7a39b76f00503126470b0d. 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/SEBIA0400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931ddb1e5962ddb4586278f8425eb242706b4f0fc7fbb8dba413b0f9727a68b6. 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/SEBIA0200095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a38abc0a1660e7f927e059b4b1e5d7fa14400f3b8b6417bb157bfe808a46a5d. 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/SEBIA0200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91949e61b1839710ef0d6560c5ea00eae2aea28ccfc1bddd46fe13bf1bba5ad. 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/SEBIA0200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83377a38df2663dba3ae66aa5588c3dc51c548561570dd119f31f5874011eb25. 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/SEBIA0200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff401877919c198c77155070b21de294bbae9920b6201c9f843ebb4ed6ff646. 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/SEBIA0200094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd023f44f2bde5bed0b61996cc09e8bf75f51113d6311c7bf4803eea64649ffa3. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/SEVGT0502204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e29aacd699508502d0ce50860a5fd0d0b86a4dd3b79d85cc49fb234425cf6e0. 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/SEBIA0400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21e5301953cc2e0035cb04b90239a0857cfc95e3c4ed895418eea0e76b46af7. 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/SEBIA0400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f39056a78d47405bdcf8fdf2bd0cdbc919d9b1149b0c19262a9f37d78b6bf6. 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/SEBIA0400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89530e2ce4bad4b64a43d7fc315fa5bd72678607988654a0a22b6b9e8d59d52f. 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/SEBIA0400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48ac5888a5f23074fce7fab5fc767846e5084de361687c5a01a4039df269b2a. 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/SEBIA0400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5f47f1e666a007ef93902f83629e8e4581aada3701a6ee3f1e36f56c106878. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/SE2IH1600101.
En vänlig grönskas rika dräkt (psalm nr 201)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc25faf972125fce315c4c91ea321e964a3db5b7f68195db18f5daa6161ec58. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/SEVSZ1702601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f981e0f99f9fa5ce495b73c70adbccb54b19de3255f2fb5bf1cc88a6aeadf7. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/SEVSZ1702602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd2550bb6d5fd6cdf10626f929364fc52874bc8c6288b4d8e6156f811ffbfec. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/SEVSZ1702603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6705cfe79e2a8f72efb8dfa15c50a6474b4e3ebc741640090012776b32f89124. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SEVSZ1702605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb719da85ba38f40711e3c116c68a70795c7de3d2832189a167e3a173fd74fbe. 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/SEAZC9326040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a7633d732fbc39f62410d78fb5cbb0fa3ef351400eb7dc0f53b223570d3cb1. 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/SEPQM0613189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1700ae7f2ad0fa0fe4e39ec585f8a1ec00e49046f68331fbf69e09fd11e1a81. 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/SEAGA1501911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfa434128010d64163b720f816431c16b2c94c3662bcbb6a5c79951ca4a3b57. 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/SEAGA1501912.