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 0x61d038683f21a30c5970f59809e46530f66babd03bcaa0734c98edf3ce445a54. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de5095b2-7d16-4364-a594-c89619fc7edc.json and https://artists.proofprofile.net/proofs/artist/de5095b2-7d16-4364-a594-c89619fc7edc.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 0x57754466ae4d93079c622327c8f0ca130638e21d72e6c0e2a890845906eed3fa. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/QZS672402944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73661d0db6c9e660d64aa6432c3e0801131aea24da27df55abf86a79ba0f7ac0. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QM42K2412259.
You Bring Out Everything Beautiful About Me [Sped Up]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37cac2d176bd2f4831850a04c7767a9e47aca3171c75fd55d3b9f709acf7fab. 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/QZMHP2439813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e9a7b31ad7c5fc897627d852c3401a31ea71689aa2a93612a14d0ed97cfe9f. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZS642475481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06617669d9d3e75a3f8331a9f2a1bf47bc543d1d1dbd51f73b0f4d6774508a76. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZMHL2525402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe460dd53428a0e2b6a3b81b58250a02cefd7b5cd3432bbdfa29431dab00583. 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/QM42K2568130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1dde64e04d86ef802c4101d8cf0e6935dd106e683a4b931bc89b716e4bde68. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZMHL2502829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bd8983bae3ce735761b7f9812b1f67f5add36e374db1467e1be9c297dd20e1. 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/QM42K2551397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3c6498b9d8c1e387da118b731161992b89c053d33fefc27bf3bff86643aa53. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/QZMHL2505083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c52778e89c2e8be5a4b68c04507852b56b07bc3757636e08e49ca8fa88dd12. 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/QZMHP2566120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdff5ea12a6aaeafc9ef5342db70567adc72d8d2b12d2a236af5d20d3ad3bb49. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/QZMHM2594580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9977eae9e0a3d41cd5d8b5176f67b4e9417930f9c4390a478610e92b1a713ffa. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZJRB2573267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96815da7e0c9b03639e0486ed744c533cb320dd0980de829e3351cf7f1f3d424. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZS652573554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcbdc3631eff9d52b5f69e3f6e0a3da9def39f4313534b19e502da2d7ca2f42. 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/QZHPJ2597239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ffb3c77004ade56b7befbd2047e70a1e66721834956d7270c3c7e93a6f6099. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZJRC2514714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333eb71fb9ceaf4a9a4cd04afc74b0a86b59f1bd529a3d7d084a014d16f75420. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/QZMHL2479822.