Sa, SA, S.A. or s.a. may refer to: Arts, media and entertainment Music Initialism for "soprano and alto", voice types for which a piece of music is written SA (Samurai Attack), a Japanese punk rock
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 0x36c6a995fb6c99ef35c266628d1e9e1d222f8fe197a63705ca6209a836f4aa4f. 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/9d34e757-16f2-4bb0-b5eb-b6735dc51afa.json and https://artists.proofprofile.net/proofs/artist/9d34e757-16f2-4bb0-b5eb-b6735dc51afa.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 0x2fbc1b0220a85579731c2225dcf4727df5f166d95d0ca6882a247302c7800699. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/BRRGE7700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42430e7965336586007937c121678826b6553208b8a9fe1c672a3c48fd1dfcc3. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/BRRGE7700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0dbf8bb7b5706dc92edd0a47a57862f776abeb8679a3bfe27810e2ba1cbcda2. 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/BRRGE7700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25f5411d7b92329e033cd2448ee726ddd30322417f6823769c377f022720fa9. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BRRGE7700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01e5efcd3e38c63aa2ada12ad4d85517ffb86cdd9fe2db29544c2c7c63a98c7. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/BRRGE7700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01e2f28cf690d5465f13941d87ddc612a334f90d120999a6b2d4b3344340c29. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BRRGE7700024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9024cd00629cec72043e059c68fa450cd92c962364957845fb863472f928a27b. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:45:43Z), 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/BRRGE7700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262b69818a90b46bd85f29a2758afe1c55e8a048563d6c3d2deb1d300e2d1ba5. 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/BRRGE7900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a3058f35245e4fbbfedc10aa0fb59b6571b54beca839ffc7c6ddae8b4ffc14. 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/BRRGE7900005.
Pot-Pourri: Primeira Canção da Estrada/ O Pó da Estrada - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bbc80b1b298a1c8e8f7fd3c3815e56c5a34279ff63694665880ab59d25d659. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BRSGL0100247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3e0224b34144784e690eb234f4d79b0bbd9723c7d6bdfd3cbd7918c011d082. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BRSGL0100250.
Pot-Pourri: Casa No Campo/ Caçador de Mim/ Espanhola - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4b5dc7c8abfb3d481ccb0fe6dd70993b9c7fb8ca46531dd1e86754ec94ee5d. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:06:51Z), 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/BRSGL0100254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed10f6e821cce57de1ce284ec4ea6e40a72e20e562581d47831179614ab77e0. 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/BRSGL0100255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842544327582417478e641cbfcf33f57c09b394ec27b750d4da97f62839d6fa8. 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/BRSGL0100258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e431d6886454b27de989bac4129f8fe62f3d157b4b9264244f3ab0a5a29ae45. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BRSGL0100260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734bbf9265ea76fdd0c8cb0f252ea22c1729ee19d5669fcd246065896efedaa5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BRSGL0100261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463adf29cb2c5eeacfd63475f4a15ffc1e98b8f89713822464f2d2a96ce9944c. 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/BREMI7100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218cd2c1b8624812fa46dd055eaebcb8e6791261a4370044fbef49c16d164962. 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/BREMI7300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe865f121d069434485f025fe27186788649d30150c43fdf8323e79fd3412bf0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BREMI7100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6166db1795c4bd89f3f0c93233d4826d2e2ca8cb787e41a4be9d01ff40b7b873. 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/BREMI7300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889539cf08a5ff8d58d086840bedb06374c9f7935344f48a64ac46e0b0f85d98. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BREMI7300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6322543b1f216a1fefd088c3eb611c2bb63a811e405012e61c89d4aaeff54a8b. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/BREMI7100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b7f2eb396e55b8e555d38a21b3007a75cee59972f8969c316c7afc158f484d. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:04:46Z), 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/BREMI7100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76415448e63063ccb33e1986a5047bbb18a51ee25b8c7db1b997caca467a0e6e. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/BREMI7300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf294acb4f22d99cc0a13c7265edd5eee8154b5702f3f1b9198ed339ec08b1934. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/BREMI7100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e56c4ec5dd1d26fd8012bdee89e322a296315448ed0f4a53ab62af592b3512f. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:00:43Z), 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/BREMI7300017.