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 0xcafd3ef9ea2d9a340b4d13ddbf6ad380e2fc5cd4e5d600dacbef1f660267f410. 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/a7631603-4a83-4af1-8953-4aace4360f2c.json and https://artists.proofprofile.net/proofs/artist/a7631603-4a83-4af1-8953-4aace4360f2c.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 0xdb14bf76d1ef7f12fd22eec7dad8e909a7a7b5ac928b6d1d2b3973931300dd14. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USQY51579861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a3b4bc6091c2722f765f1b6b18dbade40b5e2c804c230e03f0fa5769e9eee0. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/USHM91614908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33dfee071f374386e6f52ab70f7f7041dc81b25ce7892e69be08c2ecbb982010. 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/USHM91614910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179da9430a43871bb7aa2e9564b77ff34c239e9d253273d15f0c8543839887d0. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/USHM91614911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269b49f535a5bf3dd13bf71766495eed2ff28189a74063e6a96bee5feacb7e0e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USHM91614912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57977ea470cf53d1e67b461df2c983f7ca282442304638c3e0d8ef64c107c0a. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/USHM91614914.
"Consideration 1" from abandoned perspective
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5960e20c07a9115d121192cb82bbdcc2e3f8bd765ced195c0e9056885a836d05. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US83Z1662390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803b983839f5304a891a5a93998679db53945fc8354a7940de6448c5a456a2e8. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:27:53Z), 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/US83Z1662391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ddf56b347b6aa0e6e601b83f995aa29c8f8bc7eb8c619c88053fe46567b415. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US83Z1662392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58feaeee05afc6c89074df7440417ce9ea9d8e0e29bd835178d8e16510e38104. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US83Z1662393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb421d476bd097dd736123f3ae9b131c287a7a6daf0a78c26c724c2d78260293. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/US83Z1662394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ed8c77c8fca02a397601ac01a30a309d42eeb869377480c6b7b94d0d2ec579. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:50:48Z), 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/US83Z1662395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b801ae8964c485572af0f051b1ca7591c28acd659290b99e9d7c6be025df63. 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/GBKQU1886188.
Under the Morning Mist and in This Perfect Dream
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cb682a92d3cf6879992de95ba845de549ff42ce2f82945915bd4c101e693c0. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GBKQU2134236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebd64353b82758e0f3df7319eeb654d85145bdf3d90fa528758caf9c04c5c99. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:46:45Z), 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/GBKQU2134238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934cc5d2733fafc92f47156344d94c9e8df7af9e1a9ed98818e69c83243582d6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZJRC2205704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a7649d2839cc13775df1bbe39901f10e01b79765cc8e07928fcd28f3ad24d9. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USDY42509272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8fbbd4890689db34feb809d827b5238191cd7a816df1091f44bfb4e2ce4aa1. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:46:53Z), 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/USDY42509273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda017022b6ac1b2ae1ce9d123a887560282f0895bd762d22e6387661a3b41b9. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USDY42509274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3f987b9a481729573c86c1b11ff0460765e0c32249ca59ee743470a9bceb2a. 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/USDY42509276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0daf650ee75faa9ecd626a6dec16736f15da9963c89fae64c0395cb921bdcf7a. 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/TCAHD2306992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8266a1cb3ec623e66be32be6e921536cb6ecb8d4df9c3cd17940ae16ed6199. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/US83Z2226172.
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