Sarah Hope Slean (born June 21, 1977) is a Canadian singer-songwriter, composer and musician. She has released eleven albums to date (including EPs and live albums). She is also a poet, visual artist,
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 0x04ee19b5648d0d3a1598eedce2f650c0ea47116c4ca91084a2b9aee02db09557. 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/18ad216f-8c47-4783-9ccd-1db63b3cbe0a.json and https://artists.proofprofile.net/proofs/artist/18ad216f-8c47-4783-9ccd-1db63b3cbe0a.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 0x5237964738c58643c70427b6e19ae594fdb52a5d3271d1edfa1d3f387db48a16. 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/CAH721901602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc63804b06f6c5f0f897a85451c252a22a5d8e07e0b949b6a3474cd852798ed6. 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/TCAHX2433269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec1065665bc51829610072e8f200aa23314edebebbc87d26d500e200660ff81. 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/DK2DY1400001.
Twisting Ways: The Music of David Braid & Philippe Côté
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90880c505990eb722c6d486d31eab8b7bc88e051203f48f6626879bafaddea93. 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/CA2RZ1000078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85001d5909bf4b53edaa6a8f7f5c6e7ede15ef09124039075c70c5f5a625242. 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/CAW110703044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0df4082866e8e3364deb4b281a591658a4c3938d9f547c6454d446bb9dbc2f. 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/CAW110703047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681a4837e51be75bcf4b48dfe931d64180ba7da500fec8667f5fa1fd5cc97d79. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/CAW110703050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cbe379201c4b262db97811147a338e42a358fde4a74161c9cfe0d40a18d85c. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:58:55Z), 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/CAW110402346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ee4a84b4c64c629fb2696675c8d806ac061fdd93aca33d3b9712f844bc0739. 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/CAW110402347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4365877d68f1b18e08c1917a52b34f5d5b2a4a1e843726fffc6240b4b3e9ce41. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/CAW110402355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a8c3798a83f36ac6370a584ad5bd7fbb12fce008ba140dc41d121ac9f61911. 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/CA2RZ1000003.
Mothers and Daughters (Daughters and Moms)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084c9c43a75e3e5361f911f2768ce18a628c238150b0114b9d0ca098da8c5aa3. 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/CAI222000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406a858634bf90270bba09f793f1a159979a77aa9428df58de5f58f6c0ebb6fa. 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/CAI370815690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474a5e30db221a383f31531922021f2925c942b1451da49939e31d46d0fcb123. 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/CAI370815695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186b6dc13bc7b46cc560e3fdf8d18fa9ec715145dd18bd132a2f41de6d7c9def. 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/CAI370815696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3ee72f6010ee81d11d5fb86b8282b0c64fe48f3fe5b1fa899cab4042bea401. 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/CAZ520617701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3ab960eb346715c5678fa1f7b7b8318add4e7867fca1b9636f5347f74edf14. 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/CAZ520617702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43df263e77003f50f92953d9dc078f911b0883999966c77199de4ce98b435cb. 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/CAZ520617704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998266619e82ca5da1557410553c11c1709965599574a1f4cec68530bb29028a. 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/CAZ520617705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83978854a48dd49a68cc429f39f9f59bde0ec13b64c1a0d52388546b6e573a72. 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/CAZ520617706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1443479029b390b01eb89ba1f635eed6f4428b859805e67b25dfdb0ab0ce0ce7. 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/CAZ520617707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b560296dd969b0f415dbc0937996a62b67a3c9540426062aa860065ad14c29a. 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/CAZ520617708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3aeeb674a813c221c04967a86d8ace9b20039e6f88056f6e9d159148771589c. 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/CAZ520617710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a5b44ef9cf38fe36b3036efc4e9d56f7a0533742c1415f9f3d6c1876640d2e. 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/CAR0R2200031.