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 0x4374d91ced157646f90e75a2cd90d0b87af4ea69f580537a4cf36aebdefbc79c. 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/6085c302-9ee5-48d6-973d-526248c754e5.json and https://artists.proofprofile.net/proofs/artist/6085c302-9ee5-48d6-973d-526248c754e5.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 0x89e317cca80a441efd7409f5a79a7fe40b24e9272b04b62ae2ec120dd55b7bcb. 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/QZFYY2407198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de748b6084562033f1bf40139310100ea7c028a4eb50307da9acf93af94ac74. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZFYY2407199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5436287ddf01ea9c2c42a6742f5f3d9171927888b1f9c7ffd4d6274f40b6eb9f. 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/QZFYY2407200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fde110f6c356cd4437571c942723f6f8e7e5a9c0b866094419902da3d565807. 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/QZFYY2407201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe743d89f921d683eafa8564de1bd983220a747cc1535468f341e5a3f761713b2. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/QZFYY2407202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d6038c1050604a84f73e6aa805ad1673602d2ca89d528ac939c1e48ac004b1. 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/QZFYY2407205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31bbf578f64a92ba7ba31b0de2e31286847d39c87a807c69d0fa956a201d740. 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/QZNWV2401377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31bbf578f64a92ba7ba31b0de2e31286847d39c87a807c69d0fa956a201d740. 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/QZNWV2401377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad4241bc6b70015abfc0f8b74b218311fc4156970da420c653e6fb076b02556. 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/QZZ7X2403912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad4241bc6b70015abfc0f8b74b218311fc4156970da420c653e6fb076b02556. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZZ7X2403912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b0e056e40b10f6ae1dc3a99c7c91422eb9854bd696a3dae09290c3092d48c8. 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/QT3F32468017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b0e056e40b10f6ae1dc3a99c7c91422eb9854bd696a3dae09290c3092d48c8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QT3F32468017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b04e581067c7eec54153f1f8e05b996a8bcd9ae7163e8b4754d4501d5d1987. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZZ7U2449934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddaf45b12e2d4e4a5e342cec05fb73796754c03df49b9c3837b83be9bcea0729. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QT3EX2421531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e4d24ea4ee21744f087e0587bc256099cf955754b99f98d8e11e4f3c30e754. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QT3EX2421533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624c020c3f828c9a5fb6666ae4e0edc896c0310f18db009698509815042931af. 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/QT3EX2421534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c39155a66e7381db3725a5b74088a47fee77ef446c1070a33e6df0a43ffd93. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QT3EX2421537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e520a60eab8a82f3fbcd76d166614ce61b6fdb8655a3d627271cd45c63e25ba. 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/QT3EX2421538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8a022fa04ea54c0f089da5eefd29ac247afdc381dceb405f99ff8cba3927de. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QT3EX2421541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c73ca7686ed7a8497dbf8f389ff5c56e47fd288a651ae8e14541760bc3acf5. 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/QT3EX2421543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cae69b85ac733fd7d58008d0fab116ea1d5c8a8d9012a09f11467a26ea52884. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QT3F32468009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cae69b85ac733fd7d58008d0fab116ea1d5c8a8d9012a09f11467a26ea52884. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QT3F32468009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857c492b907c278e611bb72a086eda4b6c8e602993488737fa929a68202fb424. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZDA72523859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857c492b907c278e611bb72a086eda4b6c8e602993488737fa929a68202fb424. 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/QZDA72523859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0b3a0216043f23e290602516dac96308db11ba4bc436d5c83cb964c854b57b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZNWT2503090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a10087c6244c489aea9bb148e759f0bb3296666d8a3adb922e46d2928b68cb. 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/QZNWU2524237.