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 0x4629f09a09e631996ec285eec828b940e31e357b3c4d37119d9f7aa762739ef1. 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/7824e3f3-af65-43ef-8110-0fd7d5022cd8.json and https://artists.proofprofile.net/proofs/artist/7824e3f3-af65-43ef-8110-0fd7d5022cd8.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 0x35cfbfecd621fc4b215b502cfc35dc2e85bdcf9d68b16023b7071ff81667e29b. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/SEVOZ1050502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fdd04b27c52a575d493682a52c9b51ee6fffa6938719801f79452748b1524b. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:50:35Z), 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/SEVOZ1050507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a4dee03e4530f399189b46a7b0aabf09a5b495ed4efc5e5b5e2627d975a2ee. 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/SEVOZ0050103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a4dee03e4530f399189b46a7b0aabf09a5b495ed4efc5e5b5e2627d975a2ee. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SEVOZ0050103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bce4e7fb9a986bd355670928ea38c664b1be16769339e446b778e1c58738d87. 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/SEVOZ0951909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2b49f683772c8898084ee6bbe0d9b50fe63dd5c205ec74c4d93cbd032dfc0c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/SEVOZ0350202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7e4e884fbf5e06a4193c407c62d4cba2ccbddfe1e73c4c388d895623c9a153. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SEVOZ0350102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b6470f8282f0f4a2b596e70a81b1ff6eac7acec08e26b6a7a98225966f9d99. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SEVOZ0350302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a891870b6ccb19a524261a722032ab4ade4b091e43c0b7d6bf360c08e479b85. 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/SEVOZ0350106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43fad0d1a435a8844a332d0f6830acee4644f95598c136a55cf26966e3e765b. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/SEVOZ8650104.
Löftena kunna ej svika: Loftena kunna ej svika
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c78a55a8775b1f5d1002ee937e1284a603ce1c53c37531b5e872de284f5ccf6. 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/SEVOZ1051004.
Jag behover dig helige Ande (arr. C. Petersen and R. Lundgren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7741e01ecbb8ea8f4017f3010a95d3e28941313cf50e41a6a760317d10f0abe2. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/SEVOZ1051005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f037373e408642d4190a9b37fae0753beffcc0882e27e7fe011b3ed3f9be1d8. 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/SEVOZ1051007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7084d202c2ac19ad9b077ec136f1d587105e353cd0b18e00b9225dceb475ac98. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/SEVOZ1051009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07156d3201ff8411cd54302958ba0dc86b1455e3e8ebf42a6383928881713f63. 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/SEVPA5003604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfeba3e9e5221ef61874702d1199662e133e8eca3f89db3dfbfd38b733ce21bf. 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/SEVPA5003608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cf8c7503dd991713ef0466588e1cf11fe9d6e65048244683eea7c8c93c17e4. 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/SEPVA0100210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65241e6661deebd1883e38347ffaebc131e238a8c087c8315ad4d4265051b219. 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/SEVPA0600205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2da0b7c18aae927d1d7e70548b296c98143ee82f18a7027019924a0a7fbe031. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/SEVPA0600208.
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