Tracy Lamar McGrady Jr. (born May 24, 1979), nicknamed T-Mac, is an American former professional basketball player, best known for his career in the National Basketball Association (NBA). McGrady is a
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 0x68101c46bccabe74b4de8d4f09be05aa67ae66aacc65d440e5a3c9766bd6dc0f. 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/b56ce62c-67e0-4647-8e25-4f4be09f6fc6.json and https://artists.proofprofile.net/proofs/artist/b56ce62c-67e0-4647-8e25-4f4be09f6fc6.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 0x06825db2db9fc7366b50379664fb5f7c041b592ff73451072de353b93db6124a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBWUL2053312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e00b616c9756b40f7bb538f9f5fb6c87ba9a3610512d1d8ce08cd456adef4d6. 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/QZNJZ2342087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e92a74ce11b2cc8d07c2eeabdcdda79ac6992f170efe0f4c2e2cef829d7ea63. 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/QZW9M2305931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee06605a6894fe51b14a779b16e7e5d21e316a9108cdc9b7314c6def0586c61. 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/QZMZ92257448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011bd8a4545b79e4207f8bf4a4632033ca00cac36234882d0318b7b969baa4f9. 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/QZW9L2494693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba4bbc44ac61e3959a86dfe7ae2351ad6b7abaf0ee13e178c0dbaa96d701e55. 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/QM4TW2232886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9dde85e45cb840f23dff468e10ceda1d320ab2dcad1bdc178fbdae87a25eb2b. 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/QM4TW2220728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e00b616c9756b40f7bb538f9f5fb6c87ba9a3610512d1d8ce08cd456adef4d6. 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/QZNJZ2342087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9dde85e45cb840f23dff468e10ceda1d320ab2dcad1bdc178fbdae87a25eb2b. 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/QM4TW2220728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05c15396226968ab9104187041cb96137c31d3e24ad3ddbf9f5a2ba135d2feb. 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/QZES72181361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443de797ec011b38791150f3367cfdb4a2ddc7443546a667218ff02264624aae. 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/QZES72015996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a7cfc18586dfd5c3c176e562e3d82096d27d312625f9c0164937d7c471d0ac. 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/QZHNA1950033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0622d37667b2fc5ee1713d5f6478458388b4cc588425c894e78140224dfb42e9. 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/QZFZ41972394.