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 0x854193c93487e35f3c741917a31a90a18aad6246cd824e796d8aa9054dd29191. 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/844d6d55-9e39-4e1d-b74e-c5806e821eaf.json and https://artists.proofprofile.net/proofs/artist/844d6d55-9e39-4e1d-b74e-c5806e821eaf.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 0xd79adfe542298a76c058aa909b5a56a1edd89e921a7476ff94fe699d024f72da. 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/SEPQB8850003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740f9b9e21b9d70e2539c7744ceb728c9f30efc7f3300f5d02c6fdf160334c38. 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/SEPQD9120010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716ed974b369dcd1870da614ee30f7018ffde95b8179115a25041bec6b5d96d4. 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/SEPQD9120090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823e01e33ce375c71e56ac0f36d8f6d36ab2ae7a206b6417fb90bd9478313e43. 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/SEPQD8920030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f084f30edc101149325c76a7c242ac7539704736cc2610f794ac10d29c7158. 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/SEPQD9321040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71cbccf468247098265635542055a09b60fc7f5472bddfdc200b54a23b8a5c4. 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/SEPQA1201972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa315e9401fcfd45a56acce35628c16247b29056035ba99fc805f6b1a1bb5b365. 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/SEPQD9321010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23529a292467e3e59097996fee99729db19153f687f27d474355f4cda810505b. 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/SEPQA9913040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a15aa768e7e2b619faf1e41d8e7d6534ac91c2f2d704151cd3ad3e3029096cf. 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/SEPQA9913160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3879e498d59c595d1621c622aebe20a80d6b49468da432ca294840f25583107. 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/SEPQA9913170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589ef47f1b77aa2b0103f52b8edba23e3a2c5b13d69a880811d1c079276def33. 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/SEPQA0001010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e82b53fc37a771e2b1700f70d60a461019c5c641c3c71b8ca5deecbbc3d6b2. 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/SEPQA0001040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e8b3b6ca8955c5ff7868187943be7fde452910c0869fff9bae82a06579d662. 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/SE3T61503302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf148e77de375bfa636550367c1330c6b97f19d4b67dbe0f737d5e4cf96088cb5. 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/SEPQD9120060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49835893be9c92fc0fa4674fb0c8a4db2eacb53249195f7a35ab8c0cb111a0d0. 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/SEPQB8950006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0425c02b3a070e8bdd940593d9c55c6ec6b9386d9d867366e5d037a1a00ba0b. 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/SEPQD9120020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab234ac302cfe62d87eae4d7df787b132b07a7f0d8da44338487d7107e07537c. 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/SEPQB0050007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218bf4c07e1e077a1461b60cff975b7e03ac1547eb45ee3d8f956318cc69d0e9. 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/SEPQD8920080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3924388a1ed400e787550b30c20335c058c48b82b1d4cd49971d3c6e1f5f8f95. 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/SEPQB9450004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ec48c9ea00427e275c3c8003ac6e572186f03dd2c18bc5756e6c7c1cf124e6. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:59:23Z), 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/SEVGT0603401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9619aa2dc1066780bfb764948d5f69927f19d3775d99c64fa0c48a7a2c6991. 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/SEVGT0603403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ac498b015bf7b832a25a66c053eef93874053edb05d6eeb341845ea8702850. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/SEUM70901019.
Another Day In Paradise (Bassflow Remake)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8710bf353cbf4580f25c93dcc71fa262fb223bf6714828e07eaa9fa64e7ae0c. 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/SEUM71101165.
Vi har bara varandra (Di Levas klassiker)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810001a80cafdb5945e36250e72be1ab810946e9caf4cf5020b3f2a62ce41f24. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:54:18Z), 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/SELBD8700202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad51604f229fa4d6d38bc76974797762dc3f3c19d637a67a964d83ed4716a8de. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:56:41Z), 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/SEVGT0401201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ec48c9ea00427e275c3c8003ac6e572186f03dd2c18bc5756e6c7c1cf124e6. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:21:34Z), 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/SEVGT0603401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7d866c84f24c34c8aa4261ccf81d704771bfca9248329721daf2a424c93694. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE3T61502801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6fbd70f902ac03d3005a2ccbe6ea6d9665e8be09bf497f8322fd190e507bf2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SEXZB1900101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec06cf10a132f1a40c601b31fa0bf26cc7f3ea15bb0eec7755570e9a76003c70. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:50:32Z), 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/SEXZB2000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec4685cfd8c231c030c29ca5feb79e17e9608c65acc8b20c8420661d0240a79. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SEXZB2000301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29d8652996347836f0acfc88333d77eac40ec9d5d3145954b35d04324c91ae8. 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/SEXZB2100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a88dc9acbdd82ec8fc817b3029031854c34c4d39376a33614d129bb5b585c1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SEXZB2100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9a51d41a41cab84fda48950585a3b011a7f25df8f534c0311c20d348eadd13. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:40:17Z), 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/SEXZB2300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a88dc9acbdd82ec8fc817b3029031854c34c4d39376a33614d129bb5b585c1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SEXZB2100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5eacdf7f833487cd28f35e3cbaee94a51fa86d4980884c543781e04e4e065de. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/SEXZB2400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4999fe5bd24e90d8d636e99cdd84bebef385bc57f57803e48063e6e2f31c55eb. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:40:43Z), 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/SEXZB2500302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2019a8c6eb3ff2a45a600293e759e4a7d168e3025252268309f0d0a6ae8a563. 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/SEXZB2400101.