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 0x88e525ec51e9a3b09c9287e74d4be92ba1989a7b1262d8c6f1194c9bfabb38df. 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/3e14dc5b-b5d4-410d-bf83-acc8dd703c04.json and https://artists.proofprofile.net/proofs/artist/3e14dc5b-b5d4-410d-bf83-acc8dd703c04.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 0xbf28d3703b012624cda0e9ae2ef53c318705a73bd89ff189b2468359eb711084. 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/USHM81565554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01e5f6244a7fd9f1e33428819ec2398c57939e40c1594fe224bbfb28fe523cf. 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/NO6K12501276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5886140b4649c43ea5533b377135055afbe6f91e2abb7884b0a8008a8b566a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NO6K12501277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6857c4d4ed768e08c1a793ce4b1387140d61eba90367a4acb986684da154ccc. 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/NO6K12401254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21a2a56c36eb210a25f262aedbcc48499ada8bb4bfab4da6aa936e687b185c0. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NO6K12401255.
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
Norske Barnesanger - Barnehagens favoritter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447903029de946e20509cd4e8027b65a152a52cef862d9030704af2487f6543a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NO6K12201241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913f7fd0e2988b6ba57a685a1df68cbf9d28ae8ff72b06b5e28a263758caa503. 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/NO6K12201236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd0670baf3bee67fb5f67c0f9996be5dfb6b856c127a76dcefd536dbcb05141. 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/NO6K12201234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b83904ceebaa81ad585cc04f80a86d166d62b4e9af4f281fdfac15ec343f2d. 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/NO6K12101232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d098e9eb9db44cae6d63f63a48babd92b3199cf91d6c2b22ee699423733775. 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/NO6K12201239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10d0cfc7fcc583aaa0643d05b655b01ccbd5f40264dcce6a2c67dea2f78dbf0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NO6K12301247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e76017e7efb1e7f288c013dacfd5a988fc898dc20e14aec1446756942964252. 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/NO6K12301246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3315c4da31278b32539f11be7012ae413d5dc6ce9a05184befa4e2607c13baea. 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/NO6K12301248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9776eaa05282289a93e6fc5205486fc79e0d7d5ced8f89886414e79aba74f68. 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/NO6K12301249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1283e5843ee3aaa18b97215815a4b9a50d9ad96af06ceed8f8abc216be969e. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/NO6K12301245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e3398e37eba27a78e09738e209b95278c6ba8ac15433a389033b735a74093e. 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/NO6K12101229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6875703b93f7a384d0eef7208ed5097ee0308849ed313ee7de1b02a7d2c3c3. 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/NO6K12101231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804711f9b27dfefeef499a68c5f8ce264ade273c20108b79911f37422afecfeb. 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/NO6K12101228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d45e17e7d7f461137bbd7e9ea91e4ca95ad00d9e52feb8e6dba8f13544f4ff. 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/NO6K12101230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265fc0acf65d9f25f728ede7602aaccf1a5a27bd4ca44904ee427478041442c2. 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/NO6K12201243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed03e279d8b5d632e285a79464be787e83191caa72308ccd2cebba30865a640. 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/NO6K12201244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd19c3a6004be46b66a84ff62dc973f28c702a846267d50f0e3ecf4c15225ac. 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/NO6K12301251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa717b385555edb8d431a60b0a123729ccfb534ceaa2c6856d636a6371dc0e9cc. 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/NO6K12301252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44bdae16ee38499670458cbce5055a112172b141da5ea66e8c0812254f4d1ce. 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/NO6K12301250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae564f40af1a43b82aa3a5a9c76aae6153cf4b72c3cf3b6bcf1527d867f79c77. 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/NO6K12301253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb90418ebd9db3f96156279fab41c454ef6981c9116fe7c5bee598c15b435804. 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/NO6K12401272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3113c94c98f8ad22cf10a1aaa1dc90db655a8ea17763625c154956475ec3e937. 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/NOLZA1455040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec24dad5af8ab3d6ff76b65c655d0fc03853e0971accfdd6a229e6eb84b0ccc. 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/NOLZA1455110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406508b178a67ed16b03da26a62363b3d70b0bc39f1f740411b8f57bd607d45b. 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/NOLZA1455120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31731b95407a026bec2becb5b4918c1efeacf946f531cfcdef60f12a68f500dd. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/NOLZA1455080.