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 0x38bf786f6c6e22743c6c41d9c367921d98e0158931de7662300a3036e60a2498. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4e6d13e-2c07-473a-8e44-f5056601541a.json and https://artists.proofprofile.net/proofs/artist/c4e6d13e-2c07-473a-8e44-f5056601541a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Academia do Choro, Vol. 1 (Instrumental)
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 0x035b62c2a3bf39af4cc7263096e30efa578d0a3be9fdae9baa53b39218241d25. 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/BR03D1500177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef91986f4cd561c8bc9d7e8b63a9bff205b7e7ed48fc8140056bc215938b314. 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/BR03D1500181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee648d69c2dc3ff3d3a745d5ef70a9dee6d9afcf2a4d97b49114f021a81bf4d. 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/BR03D1500182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f7c2090d505ec93ba02be042c9396418183953cd5f6bbf150fe090741b9a75. 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/BR03D1500186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7dd1f43c55cd16c7afc19972461dddb59ad9b33fd6416da247faf82b1652a5e. 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/BRMVP0302146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e1c1684ab16a0720de51eb06a4a242b7cc3d1065d6aea11d6fef8df9c732f6. 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/BRMVP0100187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6417b0e8b95025b624328c34e0458878d3a9f2b679826443450dfb40092114. 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/BRMVP0100188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bb03b3c5249b847fc88a02450409964ce423a5266b799620f4a02a94545cb0. 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/BRMVP0100191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b09929db32a7dbea2910c2f92e5a400153ec7e7caea1c0d97cc0ae72d2717bb. 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/BRMVP0100198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecced2c53ff808c7bca86e7137d30abfca028891c52333dacbe0644c5661f28. 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/BRMVP0302911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90dcc09292a124d5b21efa380ad9f4552be11c2a1e4a7b5f11c5ff8894b623e1. 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/BRMVP0302913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81f31f4e0ee1f035d5222cbeac7549affcfe33265d19bd6f0ceba7c3ccdd1b3. 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/BRMVP0302914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b084c4042cede87dd5bd5a73c7626a835112728cbfe4d1ba3146ab60077f100. 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/BRMVP0302916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e9a91c1da25500af31ba52b2693912fba6562c9ea94e009b82f4a410756737. 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/BRMVP0302917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135eae4249186d80e4268298cd8f9c9309ac2d5cb60a56ec3a4834e07372fbb3. 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/BRMVP0302921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41be171ea1018388496322b3403f12e966eba008e18693ce25dac570021af76c. 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/BRMVP0302930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153ccf7a2382c644598033bec31e836e8fce19479ebcda84e78cc88f98a0a454. 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/BRMVP0302934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6417b0e8b95025b624328c34e0458878d3a9f2b679826443450dfb40092114. 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/BRMVP0100188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9338026db45a04129e171e6cfaf414f03433c614e9fac146a84cf5af224453f2. 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/BRCID8400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840206730e6ad8f79834da1c8ac6b3cd5812050b2478baaa173832c102027dfe. 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/BRCID8300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d72c90ea10f56570b77f0168ef0af9066422afcd0b34531075187b20862a3c. 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/BRCID8300136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd8b9cdafd1e1c89aedc664706165bc63175ae035caf41d3f9afc58b6d07521. 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/BRCID8300073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9207d4795e5a04cd67a445342a401b6fafb7c9012cf604c086c45c6efeb9461. 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/BRCID8000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6cb6e7342dd743fa3f18c35e9fb73f25ba68852caf65e04fe149d51cfa436c5. 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/BRCID8300137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3983fa532da0282ba2a38fcb57f57d601b89186b99550528f3846348b3f5943d. 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/BRCID8100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286ce8fb7cd718a0f7e3848c552f456b4d50a389d33b53f5594496719340da47. 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/BRCID8500073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ec45ea54641c6fddc3eb385444b7ba55ba2b353062aba8ec2ed50132f84b28. 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/BRCID8300139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84fc1a5b3827fb0889f38f4a88d62c6bcaedb2c90970061b8493ec1acf0897d. 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/BRCID8200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c2533e330cb97bba0839c34cb4a8e73223b69b0fdb78df85e7212ec9958e1d. 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/BRCID8300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb7d9a98e0f26176c3239621f60c5a97aa20e723aafb49c976d614adc42555d. 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/BRCID8100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f2e6ac9e9dc7c4e98da446242903f00c156743097cc7a306c1bb4c2e0dd97e. 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/BRCID8300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa179bc19c9371ee345f297e6d2b5fa3f98c2e1e690b0fc5230bc10a10bed6b77. 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/BRCID8300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be5e5c5dfa5f917343f1560e05c7096b5468a512a795770239f28e5185237ec. 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/BRCID8000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c798467927d86c9b890e746a1ba157c5dffd847db619b1e6f7bfcb84f2d5b0. 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/BRCID8400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410fab436ef42ffb4dfb7282fa3b757af49b2f245f900f65f06b184104869719. 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/BRCID8300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d0800725224d99864f215c8c69656582ee8ea7fea38c2071ccb93011939846. 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/BRCID8300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de1b74e55d03fa12b52415f2f370bb716dbbb8196079b0802290943433cf1de. 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/BRCID8300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3972e2bfd17294b82ddeece87ff8bd7e64795eed495590cb617d4b3be1cdf17e. 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/BRCID8400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df4bd677542e4bb1a2b4607df7385f4ac0a7a2ea4d51d4ecd34c40bae899930. 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/BRCID8500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076332c3c33c0e2e6047169884c8b8bfc64cec4cb051d268eb9d060c4e22b00e. 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/BRCID8300048.
Choros e Chorões, Os Novos Boêmios: Vol. 2
Rio Bossa Nova III - Toquinho - Paulinho Nogueira - Armandinho - Entre Outros - Original Artists