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 0x36450ccb6e7a7ff6fd8b2ddb3418d253b034d818f6d96c55efb1e01223787295. 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/6f978789-3d7b-4b3c-819d-40a162f15d7b.json and https://artists.proofprofile.net/proofs/artist/6f978789-3d7b-4b3c-819d-40a162f15d7b.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 0x6f13ede6037870ea1a381c03bcccb5c68cb261254c8079014fa688931becfb56. 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/QZMHN2056005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd0bbf2ad5bf7efd91ba57687a222e36819fbd050ffa1db90d068c1e010d966. 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/QZMHN2086786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0f269d8be4667306fe300508e377af353b2f29ad62d32131c2e2ac79194833. 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/QZMHM2083744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3579f23a1f8bda4880ccad3365b7f731179f3269af6fd4f9b0bcc5942cb7d7db. 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/QZMHN2042929.
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 0xa7d05758dd43740d4ab37ef653fbac9cdb7268efed2e97832d59413b2834361d. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QZMHM2072376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd834feb0742e919a2d0baf0563873aa4dc85da29c635a33540f9b850e756958. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZMHK2025291.
revenge of the sith / traffic music intro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f3f3ba49259f94327987ff7d34c9a5f08f3198731c43afd9148e7a3f0e394c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZS672112059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b95d9480ebeca3f87bf4a592bd550c5ed856052a210ccb660391937962d690c. 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/QM42K2198019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596247dd925b84cf1efab8da2449702622db0a74530b2c4ec70cc8214789cfe1. 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/QM42K2117593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36196052296361365f0010d9ed9c6fff6bf6427c17a5308f071c570cb3d6a344. 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/QZKDK2007874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6228d7b41e95cf632a6032e547022e404ff3432c96d617e11383e24dd2c96c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZKDK2049135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bad9055972eaf403ca3af0f4cd7cbd09ae43449b83348fdb9868e82cf2c5da. 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/QZKDK2002898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7776ae6f00559afdb82607c7262728fb7bca19d533ddfc8e3195ae6704c6855d. 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/QZKDK2005356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261383a8fbd671a278514f15d7f712970941e599c2ee535a1228829361ff3906. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZFP52098114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c753ba3298ee394083290f89c028c2362e6fe85fef83c834b1f919ae8aa829. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZFP51941917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fcc94e84c470eed68507e8efc1f1f65f3fb3505e8b7604e0ad4f63a7df713dd. 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/QM42K2064981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff123603060201ca2777fa78f2cd4f4ca77dc37150edabf5230649798ec6877. 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/QM42K2014907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83bce31da6872bb54384d715741ee0c30229d156ddeb3bc691ae91eb66845ca. 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/QM42K2041760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df03b7cf72616c5bfe80b4a234416fff56a000c6ae94bb965eb4627c6b4c6ad. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/QM42K2054992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a50b70253ce0ae5aacc784a9817ed53224ab8448624096198858231010f322. 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/QZF8N2017922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bad03b787e6c807b92161f5acfc5c747fcd8495dfccf6ee0b4bed4f39c08c6. 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/QZF8N2017924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ecd33fdb7964320803eff1f2f4a2ff16e08378d6d5c3ced9b834a8b3ecdd61. 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/QZF8N2017926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e81b4ba8b482d0c1c3def29b53b9c7836e0f7ffe8032656e6dde94ff0e77ed2. 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/QM42K2013971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2158b4c77e0b0a7b4d785eeb1325f1d39cef92c7cae338f7efecf5fcf2c248b4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM42K2014863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167ef93be6a95544877b88a383c3de230371643c447c283681a2c0723036569f. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QM42K2048034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb769e5760b5d9314f71463732bdf97fadd395f895d902e4ebf91c5ab0db39e72. 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/QZF8N2017930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2d71cc80da05123dc8cb47ab5975a0e147ec9273e4e1c7d6d47f0ce98c424f. 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/QZF8N2017918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8eaf183fe72e73623f0154f07bd100538de158d213c5637d53aaef2f54b2c11. 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/QZF8N2148409.