Katunga is a town in the Goulburn Valley region of northern Victoria, Australia. The town is located in the Shire of Moira local government area, 228 kilometres from the state capital, Melbourne. At
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 0x269b8c7b77d3653b52aca919fd6d5e0cc3e3a915d9ded7c00aaff38dadb41d2a. 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/4f8c4d32-f403-4e4a-9152-fe3e05842fa3.json and https://artists.proofprofile.net/proofs/artist/4f8c4d32-f403-4e4a-9152-fe3e05842fa3.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 0xb9e62fa9fecf59b96096f071b2170ddf211a8cf58d55365f8b627e27335ab7d8. 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/ARF109900537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f88e82398bd883f0ca0166818cb8cccb107d91986fde5efc4900d79dacbf7b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARF037100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbe09c7ca2d8809e0b3eb46c65173dafbb1a1b4b4e0716f7bfe22a961a55940. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ARF037100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e115be25c5f127961ab5aa4bb9fbfbdf261448013c39187da506b74919a307. 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/ARF037100085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc1698f98d5d4154112b91679fd590d1e8e3b1f57064c01afdd835ccef6ff6b. 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/ARF037100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcccca2481ed368bd125c4e29db9cd9092c4d9361a354244f0cb12e9f69bbf72a. 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/ARF039600897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a53f27dd3106124e0b51523957e19e21b46800303ce511e104222fd918fa3ad. 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/ARF037200139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680017628ba40580a48ff8ff44d65a7d5152a1697b9de1c13b5137d29be8ba02. 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/ARF039701132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de9dd9a481e8c7aa576bfb6f283973675d6ebf25761579f29c1b3c17d07c0f4. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/ARF037900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70149bba615e7d5c55d72a862ef8c79411b362ac59a3d829926591d17aa861f5. 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/ARF037300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c25eaa9b4c4feb8467b68715140cfc8b1be8fa0a8322698013bea5a97e8ab59. 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/ARF039901460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b51d8b7e8d122bd433758a52722a6c05ba4f96456ab3364c8e8810f53ee473. 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/ARF036800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680017628ba40580a48ff8ff44d65a7d5152a1697b9de1c13b5137d29be8ba02. 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/ARF039701132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe128963683a2c812d0c126929f7aa1846ebde207f2464fbbb5d5097e8935a38b. 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/ARF109900510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d4f8f395ef9a2ba8d0ae8986612a90271b326c119e3ed42a104e20d148b16f. 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/QMDA61404465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e846f077a6c9293eb1d8994b964ee83e0f0dbba29bc216a575b391fbc3abdce. 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/QM6MZ1592008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6baa589e95ee0cc7ef8f1522d90eb4373d7c75df51913ed3892e9bb653c98d19. 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/QM6MZ1592020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb969d50c41300a5751ed57fdb1cd683d203aa4863dd8a3cf845f0637823a83e5. 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/ARG100811136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbe09c7ca2d8809e0b3eb46c65173dafbb1a1b4b4e0716f7bfe22a961a55940. 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/ARF037100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892e6ead21c3d6caf85725ba17f03300764edc8c7f984d544a2bad19559ad9bf. 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/ARF037500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c7d29fbb3aa809f3f747982877e6d814eb23bf917df8cf6c7d01286b61dd58. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ARF037400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbe09c7ca2d8809e0b3eb46c65173dafbb1a1b4b4e0716f7bfe22a961a55940. 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/ARF037100096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8572a6633681f274ab1fe47e238f01c490b09faf60ab704067b38d9ac02601. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMBZ91345356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ddc9b1d784db2bdd49a372bf86a90c8b73662d0c25cd709590873ee89101a1. 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/QMBZ91345357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebee054b258a341bfc6ccb0031f660516a73579204c971ac6fe43dc1852f600. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMBZ91345361.