Section 25 may refer to: Section 25 (band), an English post-punk and electronic band Section 25 of the Canadian Charter of Rights and Freedoms Section 25 of the Constitution of Australia Section
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 0x22ff488d673fa8fe89284fa5bddafb48c4c82b7a272bf401421fb7d4943654c6. 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/d6f350b4-81a1-4833-abd6-6adc9e2633e2.json and https://artists.proofprofile.net/proofs/artist/d6f350b4-81a1-4833-abd6-6adc9e2633e2.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 0x90a9cde7cc14dee80d7c21cea9d168b25db36ff9e0cdcde862a2ec78a93e4fc0. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBHBR0400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3295d893f60a37194f8933f91dedb568754b62ed72e7994cb1ae47082f0fdda. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBHBR0400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5144b3582d43bedcef611d34f57166131876ca0bdd46d6a8986dc0c7e063b8. 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/GBHBR0400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71449f50aa6205b26f7c771a3e479cd81e387fdad0776b758a447ae31c95ee4e. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/GBHBR0400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6443329f3dccfb336ac7894c0471132ef007775514d9514655d7568ff13558cf. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/GBHBR0400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97dd6b802e749ad43bc0826056ccd565be23f8eb70ba5b9c6828bafbcd31b18f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBHBR0400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddfff4b238267684c0d3c39c8c76b30034e0397226ac4636b9f05bc5b01d2fb. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/GBHBR0400114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a2bda82ddb2a72020ef050ecea7a87f93811d9ba14ea21b777d0b440190ea7. 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/GBHBR0400117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289a4278ac3a58ef1f3e7abe4e5fa6e1bdbb77f59b92675bd562c85dfd7faf20. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBHBR0400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e37135984e59297c38a7a4bf9caa948262a81977637aca37e709efa2f8abce. 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/GBHBR0400121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0dd876cc928e49862aab5a18f95ed94693ad5f5ee726e35b9d0833682299e43. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/GBHBR0400224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa137bc7a907ac2d630056cfc677cf94d47273c3552fec15f012573205e892ea1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBHBR0400077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b16d454fb3ad0f7283b89f186eff8ff7fcb0b79707de9d4a4363bffdf5253f. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/GBHBR0400079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411ae5ff818abf0795bd329ad1fdaf048ae655b1ade0e54fb40ddcf00b6b41c7. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GBHBR0400084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e7296445351a5aef5fe371a5d7dfba06e4b0b09efdf7651348ff0fb43bcb57. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBHBR0400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca1d89e3081edc6aad46f139ee398e15d9303049ff32a06575e243abb223942. 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/GBHBR0400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b21848723af180412b694f5e1a3feaad92ec9f71c89a6e484369f7098d08c4e. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QMFMG1351893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94998d7e6a4292fe56627064f924921bc7b1635fe20b06b595b0bdf8bd31ec5. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/GX5632570001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289a4278ac3a58ef1f3e7abe4e5fa6e1bdbb77f59b92675bd562c85dfd7faf20. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBHBR0400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7778a468ef62f62253205cbee82435634f473ec6a9f43bb21af3d2a66b8a8429. 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/GBHBR0400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca1d89e3081edc6aad46f139ee398e15d9303049ff32a06575e243abb223942. 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/GBHBR0400086.