Mary Mary is an American urban contemporary gospel duo formed in 1998, consisting of sisters Erica Atkins-Campbell and Trecina Atkins-Campbell. Their name is inspired by two biblical figures: Mary, mo
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 0x7b2c140dd83bcba978726941be3fd891a03963cf5781b73b2e5e4156a2036316. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9dad0110-5787-45d1-8a2c-e0400c3ebf92.json and https://artists.proofprofile.net/proofs/artist/9dad0110-5787-45d1-8a2c-e0400c3ebf92.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 0x58a4dcd18dc83af6c51f5c150350cfd1cb8e07dbac86d5226422ec3e3b15b8a5. 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/USSM11004768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0a4814aad6acc6f023b77658b1b20192a33b932e808b10bfe3e569610cdf19. 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/USSM10002274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ece8eaedcdee41c1ac4fb47b9448786213545b9af34f887a20bc9d11f02d3b9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM10004460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7c80530851b217650a359e2974e9457d5287f64a7bae1ecfdf879a4e3bb3c1. 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/USSM10803569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3163be80cc648a66c00f7ede71ac785e0bab7f294fa40952820aa2419f6c8ff. 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/USSM10500901.
Maybe God Is Tryin’ To Tell You Somethin’
The Color Purple (Music From And Inspired By)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff707e0e9114e486dd463e6333bb5b76f0bf0f259448d86c48b71d1e5d49df1. 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/QZSYP2346531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89258fb566c0a5cc52487a06fbe85d8932e0d66527a6b07bdafbe4fd6fb4d860. 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/USSM10702405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaaacae4d3cf21e71d8044787c5f7510f83b462b943b969067cb557d59abf714. 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/USSM10201933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769a8e2730a940c11dd0029ab989cfa6b860a725b0b196568285188f3fa4af06. 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/USDJ20110867.
Come as You Are (feat. Marvin Sapp & Mary Mary)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb4b8bb8366b54384813017ba27f0ef2565a95b87dc10d3a7d60e69096fae5a. 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/USA5W1800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76230bc33de25705564d504c18d81acf65a61aad7d4215f59b6d761852aa76d1. 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/USCRB2300277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0a4814aad6acc6f023b77658b1b20192a33b932e808b10bfe3e569610cdf19. 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/USSM10002274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a405b31cd7ae90797bdb4a109b2c4e882e16cc11c9ee927576fad9d129e60de. 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/USSM11201085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b1d32530d018aa7acac88e038cbd6fbdb8f15172dbd81d324919bc97dff249. 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/USSM19922334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b1d32530d018aa7acac88e038cbd6fbdb8f15172dbd81d324919bc97dff249. 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/USSM19922334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ade175edd4d9f0ce29c625a41651501eb0a5753c7b55054fc59b191cd79fd34. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR8GV1837130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f11417846fa32654b080e1ec3fe11d5a05ee09f588b2020fd4e2dd91cfee46. 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/USUYG1441965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e45e5ddc31e05461e85757b3856af1998a30e3df03331c2f348f110bad1c728. 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/USUYG1505888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f93f10bbba1ec8c9e2bd40b42c0d008a2b23063bd4ef255fb511234a73aabf. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USSM10501826.
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