La Portuaria is an Argentine rock band formed at the beginning of the 1990s. The band developed a fusion sound, constructing Latin rhythms upon a base strongly influenced by jazz and rhythm 'n' blue
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 0x4f0510c9cece4e909c307b83fb07397c648dddefe594291da556bad2d441338e. 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/75b1e149-eda7-4e35-bae1-6dff3b900479.json and https://artists.proofprofile.net/proofs/artist/75b1e149-eda7-4e35-bae1-6dff3b900479.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 0x77dfda937deaab98d1f52c26b5836716ab632134b4be68c20a1e58f729f39892. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/ARF049000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d6d4cc2850526c210498b0e226bc7c869ea160c5b5d64c81dcbbd6d4912913. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ARF049100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a676b34960c48e9ddf1b6740d3338f727e573df9506e5c539952d743a4d9ee. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/ARF049601439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf773b88c0def59c3f1b65cda0ba871ad04ae2c0615be03a64b0aee28c64e5a88. 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/ARF049100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d01cf701b0fe66957fde42073756cd2a32277260d120c9d47c65f8ecdc72863. 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/ARF040100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed4d256181c446450d3d1b8e2c1f275456b251cbde25903f2450422b70d474e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ARF040100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765434a14a86843e07c5e44954c3690b00666f115d3dc60b3cba5de49de5f03a. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/ARF049300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f95898a0dc444d29769b1b0561d0afed909d9336e1dd09327efb28237f3fd7. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ARF040100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc950f1ec5218953bafb876edf9014d50d31b2ecf858b379c5644cda9ff612bbe. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ARF040100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50ec1070810bfc1b6da871f11cbbef9487cca5c14b5d52ddabe36becddf7b4a. 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/ARF049300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391b8e056437bb70677f9fcb6eb1c6b35bb11ab3293be09c1c0a70bd8a0bf4ce. 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/ARF049501075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe000f5a4950385a7898f2b440c64d290a40029eac099a29aba01f5aac8cec63b. 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/ARF049501076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2654150ce320c091cd0759c2d44c89fec6a7899073ac2c5f2cb0cd4b91d0de39. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/ARF049501078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3389a75a02d57992a11499bdc36d81364ae8cd660c712c36f828c0be0f1f351. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ARF049501079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa857d752e3bdc49ccc6833276fd9e860e24f996048feda040b21657f0972b7be. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ARF049700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc579fe2d13cfe98bc3795db79e8aadc47b04f805ae6ed0d77d84a0aee7137e4. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ARF049700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b99ba842b053b096b23fbdf12d314688f39ba273ecfbd361ff78c9673e56c66. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/ARF140000166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7b7ff5d7f901722643be3478116acb88580ad49fb0b933670390e08a136824. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/ARF470200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631816737b219153cd832c480dfc047986f08226d810654048a45137499d9970. 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/USA560696324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb6ec2e72bbdc9bc197dc5a58d54a4aa1320f1fcef0ebb66f06fc8f8e5adc56. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/USA560696326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9609f179354523f6eb46ef970ecb88cdfd490e12bfc08ce69a2bf8aca112118b. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/USA560696327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f36992604fd19d76c11c6b7bed347e647ef9ae229add1efe459f69e00321f0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USA560696337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa229cd512bd40df3334cd8f968d778c22bf2ef5eb029b5cd3743703913a8b4bc. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/USA560696338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f04648e7039f551de0a2e1075cf9ba9f53850bfac5f53fb58f49326863fbb17. 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/USA560696340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc076b53aece86681cf5f95b0a7b205a041e113b58c2f3159b7c90eab9cc8fbb0. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/ARF470800218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95bf43d8e28a1fa946a2d042717dd30b2a5420548b10e5ec04555ea1ddfb4e6. 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/ARF470800219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3663923e5fc38615dd21e3cdabe5e470a729491c8af8ee7c3c61d910285956. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/ARF470800223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e547c46740895650f3817e4b1b873fc26ffc083f8bc6a0b5c6dcaff25e5531. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/ARA822103559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df37914aa0497a7f74542c70b2fc28b2e5f47d019410df33e17765e3c79136b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ARA822103560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4fbf5fc5c8e2dfe4d2a33a36eef86da6035607182fd60fa00b88ee65beabe1. 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/ARF470900215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4c9929be186ee540ffd2d24224da064b03769ef60b299bc89de886360171e6. 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/ARF470300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557318d98d0fc1f3e7ead64dfc33f30f8206c956bfc8c036263dd33d01135e21. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ARF470500305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4c9929be186ee540ffd2d24224da064b03769ef60b299bc89de886360171e6. 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/ARF470300078.