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 0x5c12a60491032787724a32fe91e665e54cb548d3b0ce9753c350da8f8602d5fa. 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/e648d3a4-54b3-4e97-9543-58f6924f5423.json and https://artists.proofprofile.net/proofs/artist/e648d3a4-54b3-4e97-9543-58f6924f5423.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 0x2b7011e7c40f5669dc80936c2621da6778e70d1826a444a39221a74541de2add. 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/USWEX2200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45934615f0925c6d7cc30c4ed6baaa779b4f3ab9d420b3a38d77e19e7d9c0b6. 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/USA2B2200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615c79af63096a91872bc24f13df8da383a6aaefcf70f5e11948ec6ddf7cfb70. 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/USWEX2200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36880c78bd5ad82c16ac16b1afc3bc1ab0b503818421dee2a6405aea83c1dfc0. 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/USWEX2200053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6384b1619e986b1347c5a84fe48efd6e4d9ea811af4fe939cea15c55bcee3310. 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/USWEX2200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efc4f7ad6d4040bd7d8c19743bc3ca8c576aaa22cd52545419e84274c9da58b. 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/USWEX2200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf1b98633b9663362525d5880fe728ba4ee35183d2ea22dacc3a794cfa16190. 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/USWEX2200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727f2ef84d61b68b1de27f002b735fbba7acd4718f0c05ff6aa9db969759c60b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USWEX2200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b25192bee9f5df77eea922bc9ec74ef40f7986d9da73ec3f43f2f91eb03cb28. 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/USWEX2200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5983334887f6f0565989d6494d6ac253c2d20da3cfba1d30d141b236c071ff64. 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/USWEX2200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8fc18764d793e39b5c1df89d479e4db40d9d60fc7c5f86881a8ab9f31c156f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USWEX2200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731ee6797fe200bcc6e572f5ab829423d2b4f28ab5c2b807563dfccac8dae8a9. 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/USA2B1904251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37491fc29586d9f3d739c7c1e93910e64790ca6ff36e627c712b0a4940235596. 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/USA2B1904252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ec42d62f5717e8e9fbe3d82c78dff88edc39aa0996ca4aa986d9a86fd231a0. 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/USA2B1904253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54a2fbae8718fed75b7ff52e5da312fca16e1ab089e43aa13abb037c9bb943a. 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/USA2B1904254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe43176261c5699d50d2ff409c57feff1cfec9c68ac873c9f6facf31b93b367. 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/USA2B1904255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe826999beac1a77a4f2287b32e29a457e64c1d69dcba20be9680a645063861e5. 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/USA2B1904256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea27ba43116fc28b611d8c7f22ecdddaa77150da63dbef228b4b24c081ae276. 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/USA2B1904257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f9013a8a0b4b6f782b402a4f5fa8581c8674e1d61b9016c87fdd14662fd982. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USA2B1904258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188f6a7015114373e64baf0d767b9a58fd424f2d522a805a1a5e8a81184e8189. 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/USA2B1904259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b6ae5ddc51204c9749c036934139fac006e8c82124d2bbb3db7e1624bc654b. 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/USA2B1800997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52e0c86ae7a938d67ab6ad110d42c5b0e08f407f305e90e5c0de8fc56cfa910. 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/USA2B1800998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5850dac75af9e5d163dc81cbb440b855fdf973004eb652253086f89ee8ab5f92. 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/USA2B1800999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577e9fd067c3f5969bf0df073be6c34da53821f9607a16da323eaf44bb6ed235. 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/USA2B1801000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d9a366d795dec18aab98a72f0d0d6813fbc6fe040bb3fc7ecdb485464778ab. 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/USA2B1801003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358e0bb5b6eeb9f8527035a08a8e3a93893314828917458a925307d1580c9fe9. 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/USA2B1801004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37cec02e048c05363a39b0467ee2c451ceea86ae9da50c439258f421ec41e49. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USA2B1801001.
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 0xde2e52279adbcec8e482da7711e4ea543e5317bf1e3411bdb0c5f17c180381b4. 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/USA2B1801002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37068faf3a20aee2e06042364ab76c773ad108ec131dc1eb896f7f57190cbc11. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USWEX2000143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242fd246696a2618d6b8d24126dff20f0e2fcbeec9b5bb8e8859c700bd51a4f8. 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/USYBL1902311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971f791c9719d097688a7a01c1d5c34889ff1e56ab053809dbc08d1ce1cbb9d9. 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/USYBL1902312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe0642de23696f7c81c2c27598beb082a2de41b7919b7a8f884807428389170. 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/USYBL1902313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe22006571874f56fd55fcf7bfbf10b42455ef7c92be3e99c9dbd6af20df323. 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/USYBL1902314.
Nordic Flora Series, Pt. 6: Outlaw Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e46746838780f0c97fbb28f3e13248ff8666de5c5a3adcc9d82cc2d691b8fd. 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/SE5AJ2202167.