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 0x97ac76fc5ba2d45689fe7ed7ee1ea21e6ae0a2c816ed26cbf6489d8e35773458. 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/18db48bb-a247-4eb9-b7d1-5d91f4a6703e.json and https://artists.proofprofile.net/proofs/artist/18db48bb-a247-4eb9-b7d1-5d91f4a6703e.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 0x2c8aa4b00e775a3dc3df97a8530cda1814a234ee3b33f462e6d687bfb78f4754. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/SEWEO9400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6616eebdcb970b8cb15df237b5e404001f3ccb8808a875a2571e37489067ce97. 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/SEWEO9400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d89cdaffb04b62e593452db37d0b1b3bd317bc18110b196e0964e1c82b895c8. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:07:56Z), 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/SEWEO9400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5aedecc62abcf68ae80c25fbf020ca2ed798cea6b5030c842b25d5a6c971298. 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/SEWEO9400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7960478805c14c51fa0c69687a0012ae81a5cfad2e1e2ba1ac56a50d7905ed0. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SEWEO9400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0e553bcda3f818c9a81c4c8ececf92039ec1bbb5ee94718139ac1fb550236a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SEWEO9400115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93922b6f6d5096c6142ebed58691949487dfbb3f2f3aa73db34a36a1894cea93. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SEWEO9700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9bb68628f96889f5173aabe4297c0ed7bd9ce786afdcccd93ceedaa438b609. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SEWEO9700114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3195fa8bdc40ab0a4b86ce787959390e31d3cfedfc907493494f6e6f5c09e1b5. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:35:44Z), 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/SEWEO9700115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0adc390fd69d45537c527d569180ac29ba2f96ffe643678da5e8a92d14fd46a4. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/SEWEO9700116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6bd62a0b88843caabf3243d887869b4b5c694d1cb53cf837b6850dfc947539. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/SEWEO9700117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e5b9ebcddf11d4ce2b7c967964787440a6da58594a693a204388c30458cfdc. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/SEWEO9700135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2ddb22c1bbbe62508dbb0d08c5e38b9c09510bb251dcde9a9af7fbaca57e83. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SEWEO9700122.
Cirkus Hoppa Lång! - svängiga rörelsesånger med cirkustema
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e8107c94d94462818eadd4e115b4af0709eb4211a42c99f9dbf62abccd957d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SEWEO9900108.
Mosters truddelutter - musik för det nya livet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b96d1bc7ee231799d5dfe2b001cd079e4c99b580bca66ca2693c91a8592ecc. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:56:07Z), 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/SEWEO0400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038540213cfe3f50d593c902ee561194accd9746504c5adee56928b81f15f268. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/SEWEO0400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb45c03b44d3d4143ff099da6479317c39b2dae08854b85a151b024f871640a. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/SEWEO0400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f983de613903152dd28a2a6e8c612241b29bc703faf638083ce94c12e7d8112. 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/SEWEO0400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6435a0044f94b592119010ac92b5e1fec49212afea6a3bd3646ed93802424b. 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/SEWEO0400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82eb8d13a7c82d146c6adee658add6a6c5852d6eba4c67ffee02103331f7caf. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/SEWEO0400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152c300e4278af1e24625badeac46bb856428d1e02310e5fafaf6c98573c51f0. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SEWEO0500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9015b38a9c91966b1d8d236dfad475cf71138fea7e58b00ab46d9118fa217b32. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/SEWEO0500120.
Röd Ballongsång - de mest älskade barnvisorna
Blå ballongsång - de mest älskade barnvisorna
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7660a9b846fbe04f56c9c02c089c3bc3b5955d52f44b622e8af70de1e5d62fb. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:17:59Z), 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/SEWEO1400101.
I ett hus vid skogens slut - och andra barnsånger
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49c1690ae579ef0df5e41e98f5d1cd37dff6cd09fcd8276bcab975039f64fbf. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/SEWEO1400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f451c15f2fa17fed742fc8ec2a4a05b30ff71426d4da5cf8cd0d6a597358cf. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEWEO1400208.